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AUSCERT External Security Bulletin Redistribution
ESB-2019.0699.2
Cisco NX-OS Software CLI Command Injection Vulnerabilities
20 March 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco NX-OS
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1613 CVE-2019-1612 CVE-2019-1611
CVE-2019-1610 CVE-2019-1609 CVE-2019-1608
CVE-2019-1607 CVE-2019-1606
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1613
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1612
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1609
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1610
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1608
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1606
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-cmdinj-1607
Revision History: March 20 2019: Update to cisco-sa-20190306-nxos-cmdinj-1613
March 7 2019: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1613)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1613
First Published: 2019 March 6 16:00 GMT
Last Updated: 2019 March 19 20:55 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvj63807 CSCvj65654 CSCvk50903 CSCvk50906
CVE-2019-1613
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1613
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
MDS 9000 Series Multilayer Switches
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
MDS 9000 Series Multilayer Switches: CSCvj63807
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
5.2 Not vulnerable 6.2(27)
6.2 6.2(27) 6.2(27)
7.3 8.2(3) 8.3(2)
8.1 8.2(3) 8.3(2)
8.2 8.2(3) 8.3(2)
8.3 Not vulnerable 8.3(2)
Nexus 3000 Series Switches: CSCvj65654
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I7(6)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3500 Platform Switches: CSCvk50906
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.0 6.0(2)A8(11) 6.0(2)A8(11)
(2)A8
6.0(2)A8 6.0(2)A8(11) 6.0(2)A8(11)
7.0(3) 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3600 Platform Switches: CSCvk50903
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F3 7.0(3)F3(5) 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
Nexus 7000 and 7700 Series Switches: CSCvj63807
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.2 Not vulnerable 6.2(22)
6.2 6.2(22) 6.2(22)
7.2 8.2(3) 8.2(3)
Umbrella SMU for
7.3 CSCvj10178 and 8.2(3)
CSCvj63807 ^1
8.0 8.2(3) 8.2(3)
8.1 8.2(3) 8.2(3)
8.2 8.2(3) 8.2(3)
8.3 Not vulnerable 8.3(2)
^ 1 Software maintenance upgrade (SMU) for Nexus 7000 and 7700. The SMU
filename contains the Cisco bug ID CSCvo56625.
Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvj65654
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I4(9)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 9500 R-Series Line Cards and Fabric Modules and Nexus 3600 Platform
Switches: CSCvk50903
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F1 7.0(3)F3(5) 7.0(3)F3(5)
7.0(3)F2 7.0(3)F3(5) 7.0(3)F3(5)
7.0(3)F3 7.0(3)F3(5) 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1613
Revision History
o +---------+---------------------------+----------+--------+---------------+
| Version | Description | Section | Status | Date |
+---------+---------------------------+----------+--------+---------------+
| | Added SMU fix for Nexus | Fixed | | |
| 1.1 | 7000 and 7700 for the 7.3 | Software | Final | 2019-March-19 |
| | software release. | | | |
+---------+---------------------------+----------+--------+---------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+---------------------------+----------+--------+---------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1612)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1612
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi42373 CSCvj12009
CVE-2019-1612
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1612
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
MDS 9000 Series Multilayer Switches
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
Nexus 3000 Series Switches: CSCvi42373
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I7(6)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3500 Platform Switches: CSCvi42373
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.0 Not vulnerable 6.0(2)A8(11)
(2)A8
6.0(2)A8 Not vulnerable 6.0(2)A8(11)
7.0(3) 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3600 Platform Switches: CSCvj12009
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F3 7.0(3)F3(3c) ^1 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
^ 1 This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3
(5).
Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvi42373
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I4(9)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvj12009
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F1 7.0(3)F3(3c) ^1 7.0(3)F3(5)
7.0(3)F2 7.0(3)F3(3c) ^1 7.0(3)F3(5)
7.0(3)F3 7.0(3)F3(3c) ^1 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
^ 1 This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3
(5).
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1612
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1609)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1609
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvj63253 CSCvk51387 CSCvk51388
CVE-2019-1609
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1609
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
MDS 9000 Series Multilayer Switches
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
MDS 9000 Series Multilayer Switches: CSCvk51388
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
5.2 6.2(27) 6.2(27)
6.2 6.2(27) 6.2(27)
7.3 8.1(1b) 8.3(2)
8.1 8.1(1b) 8.3(2)
8.2 8.3(2) 8.3(2)
8.3 8.3(2) 8.3(2)
Nexus 3000 Series Switches: CSCvj63253
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I7(6)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3500 Platform Switches: CSCvj63253
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.0 Not vulnerable 6.0(2)A8(11)
(2)A8
6.0(2)A8 Not vulnerable 6.0(2)A8(11)
7.0(3) 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3600 Platform Switches: CSCvk51387
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F3 7.0(3)F3(5) 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
Nexus 7000 and 7700 Series Switches: CSCvk51388
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.2 6.2(22) 6.2(22)
6.2 6.2(22) 6.2(22)
7.2 7.3(3)D1(1) 8.2(3)
7.3 7.3(3)D1(1) 8.2(3)
8.0 8.2(3) 8.2(3)
8.1 8.2(3) 8.2(3)
8.2 8.2(3) 8.2(3)
8.3 8.3(2) 8.3(2)
Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvj63253
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I4(9) 7.0(3)I4(9)
(3)I4
7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(6) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(6) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvk51387
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
7.0(3)F1 7.0(3)F3(5) 7.0(3)F3(5)
7.0(3)F2 7.0(3)F3(5) 7.0(3)F3(5)
7.0(3)F3 7.0(3)F3(5) 7.0(3)F3(5)
9.2 Not vulnerable 9.2(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1609
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1610)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1610
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvj61991
CVE-2019-1610
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1610
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
MDS 9000 Series Multilayer Switches
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 3600 Platform Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
Nexus 3000 Series Switches: CSCvj61991
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 7.0(3)I7(4) 7.0(3)I7(6)
(3)I4
7.0(3)I4 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I5 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I6 7.0(3)I7(4) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3500 Platform Switches: CSCvj61991
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.0 Not vulnerable 6.0(2)A8(11)
(2)A8
6.0(2)A8 Not vulnerable 6.0(2)A8(11)
7.0(3) 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1610
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1608)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1608
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi01422
CVE-2019-1608
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1608
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
MDS 9000 Series Multilayer Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
MDS 9000 Series Multilayer Switches: CSCvi01422
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
5.2 6.2(27) 6.2(27)
6.2 6.2(27) 6.2(27)
7.3 8.1(1b) 8.3(2)
8.1 8.1(1b) 8.3(2)
8.2 8.3(1) 8.3(2)
8.3 Not vulnerable 8.3(2)
Nexus 7000 and 7700 Series Switches: CSCvi01422
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.2 6.2(22) 6.2(22)
6.2 6.2(22) 6.2(22)
7.2 7.3(3)D1(1) 8.2(3)
7.3 7.3(3)D1(1) 8.2(3)
8.0 8.2(3) 8.2(3)
8.1 8.2(3) 8.2(3)
8.2 8.2(3) 8.2(3)
8.3 Not vulnerable 8.3(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1608
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1606)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1606
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvh85760
CVE-2019-1606
CWE-77
CVSS Score:
5.3 AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid user credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1606
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 9000 Series Switches in standalone NX-OS mode
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
MDS 9000 Series Multilayer Switches
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 3600 Platform Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
Nexus 9500 R-Series Line Cards and Fabric Modules
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
Nexus 3000 Series Switches: CSCvh85760
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 Not vulnerable 7.0(3)I7(6)
(3)I4
7.0(3)I4 Not vulnerable 7.0(3)I7(6)
7.0(3)I5 Not vulnerable 7.0(3)I7(6)
7.0(3)I6 Not vulnerable 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 3500 Platform Switches: CSCvh85760
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.0 Not vulnerable 6.0(2)A8(11)
(2)A8
6.0(2)A8 Not vulnerable 6.0(2)A8(11)
7.0(3) 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvh85760
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 7.0 Not vulnerable 7.0(3)I4(9)
(3)I4
7.0(3)I4 Not vulnerable 7.0(3)I7(6)
7.0(3)I5 Not vulnerable 7.0(3)I7(6)
7.0(3)I6 Not vulnerable 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)
9.2 Not vulnerable 9.2(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1606
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
===============================================================================
Cisco NX-OS Software CLI Command Injection Vulnerability (CVE-2019-1607)
Priority: High
Advisory ID: cisco-sa-20190306-nxos-cmdinj-1607
First Published: 2019 March 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi01416
CVE-2019-1607
CWE-77
CVSS Score:
4.2 AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands on the
underlying operating system of an affected device.
The vulnerability is due to insufficient validation of arguments passed to
certain CLI commands. An attacker could exploit this vulnerability by
including malicious input as the argument of an affected command. A
successful exploit could allow the attacker to execute arbitrary commands
on the underlying operating system with elevated privileges. An attacker
would need valid administrator credentials to exploit this vulnerability.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1607
This advisory is part of the March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication, which includes 25 Cisco Security
Advisories that describe 26 vulnerabilities. For a complete list of the
advisories and links to them, see Cisco Event Response: March 2019 Cisco
FXOS and NX-OS Software Security Advisory Bundled Publication .
This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
See Details for more information.
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a vulnerable release of Cisco NX-OS Software:
Nexus 7000 Series Switches
Nexus 7700 Series Switches
For information about which Cisco NX-OS Software releases are vulnerable,
see the Fixed Software section of this advisory.
Determining the Cisco NX-OS Software Release
Administrators can check the release of Cisco NX-OS Software that is
running on a device by using the show version command in the device CLI.
The following example shows the output of this command on a device that is
running Cisco NX-OS Software Release 7.0(3)I5(1) :
nxos-switch# show version
Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Copyright (C) 2002-2016, Cisco and/or its affiliates.
All rights reserved.
The copyrights to certain works contained in this software are
owned by other third parties and used and distributed under their own
licenses, such as open source. This software is provided "as is," and
unless otherwise stated, there is no warranty, express or implied,
including but not limited to warranties of merchantability and fitness
for a particular purpose. Certain components of this software are
licensed under the GNU General Public License (GPL) version 2.0 or
GNU General Public License (GPL) version 3.0 or the GNU
Lesser General Public License (LGPL) Version 2.1 or
Lesser General Public License (LGPL) Version 2.0.
A copy of each such license is available at
http://www.opensource.org/licenses/gpl-2.0.php and
http://opensource.org/licenses/gpl-3.0.html and
http://www.opensource.org/licenses/lgpl-2.1.php and
http://www.gnu.org/licenses/old-licenses/library.txt.
Software
BIOS: version 07.57
NXOS: version 7.0(3)I5(1) [build 7.0(3)I5(0.9)]
BIOS compile time: 06/29/2016
NXOS image file is: bootflash:///nxos.7.0.3.I5.0.9.bin
NXOS compile time: 8/1/2016 23:00:00 [08/02/2016 00:30:32]
.
.
.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series Firewalls
Firepower 4100 Series Next-Generation Firewalls
MDS 9000 Series Multilayer Switches
Firepower 9300 Security Appliance
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
Nexus 2000 Series Fabric Extenders
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 3600 Platform Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 9000 Series Fabric Switches in Application Centric Infrastructure
(ACI) mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
Details
o This bundle contains several similar CLI command injection vulnerabilities;
they differ primarily in which products and software versions are affected.
This table illustrates the affected products for each vulnerability,
identified by the defect ID and the CVE ID used in the security advisory
title.
Security FP 4100/ N3K/N9K N3500 N2K/N5K/ MDS /N7K N3600 /
Advisory 9300 N6K N9500R
Cisco NX-OS
Software CLI
Command N/A CSCvh85760 CSCvh85760 N/A N/A N/A
Injection
Vulnerability
(CVE-2019-1606)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01416 N/A
Injection ^1
Vulnerability
(CVE-2019-1607)
Cisco NX-OS
Software CLI
Command N/A N/A N/A N/A CSCvi01422 N/A
Injection
Vulnerability
(CVE-2019-1608)
Cisco NX-OS
Software CLI
Command N/A CSCvj63253 CSCvj63253 N/A CSCvk51388 CSCvk51387
Injection
Vulnerability
(CVE-2019-1609)
Cisco NX-OS
Software CLI
Command N/A CSCvj61991 CSCvj61991 N/A N/A N/A
Injection ^2
Vulnerability
(CVE-2019-1610)
Cisco NX-OS and
FXOS Software
CLI Command CSCvk65447 CSCvj65666 CSCvj65666 CSCvk65444 CSCvj63798 CSCvk65482
Injection
Vulnerability
(CVE-2019-1611)
Cisco NX-OS
Software CLI
Command N/A CSCvi42373 CSCvi42373 N/A N/A CSCvj12009
Injection
Vulnerability
(CVE-2019-1612)
Cisco NX-OS
Software CLI
Command N/A CSCvj65654 CSCvk50906 N/A CSCvj63807 CSCvk50903
Injection
Vulnerability
(CVE-2019-1613)
^ 1 CSCvi01416 is applicable to only the Nexus 7000 Series Switches. The
MDS 9000 Series Multilayer Switches are not affected by this vulnerability.
^ 2 CSCvj61991 is applicable to only the Nexus 3000 Series Switches. The
Nexus 9000 Series Switches in standalone NX-OS mode are not affected by
this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page , to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate release as indicated in
the applicable table in this section. To help ensure a complete upgrade
solution, customers should consider that this advisory is part of a bundled
publication. The following page provides a complete list of bundle
advisories: Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication .
In the following tables, the left column lists releases of Cisco FXOS
Software or Cisco NX-OS Software. The center column indicates whether a
release is affected by the vulnerability described in this advisory and the
first release that includes the fix for this vulnerability. The right
column indicates whether a release is affected by all the vulnerabilities
described in this bundle and which release includes fixes for those
vulnerabilities.
Although the releases listed in the right column of each table include
fixes for the vulnerabilities, the fix related to the Cisco NX-OS Software
Image Signature Verification Vulnerability requires a BIOS upgrade as part
of the software upgrade. Customers who are upgrading the software for any
of the following products are advised to refer to this advisory for further
details about the BIOS upgrade and affected product IDs and BIOS versions:
Nexus 3000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Line Cards and Fabric Modules
Nexus 7000 and 7700 Series Switches: CSCvi01416
Cisco NX-OS First Fixed Release First Fixed Release for All
Software for This Vulnerabilities Described in the Bundle
Release Vulnerability of Advisories
Prior to 6.2 Not vulnerable 6.2(22)
6.2 6.2(22) 6.2(22)
7.2 7.3(3)D1(1) 8.2(3)
7.3 7.3(3)D1(1) 8.2(3)
8.0 8.2(3) 8.2(3)
8.1 8.2(3) 8.2(3)
8.2 8.2(3) 8.2(3)
8.3 Not vulnerable 8.3(2)
Additional Resources
For help determining the best Cisco NX-OS Software release for a Cisco
Nexus Switch, administrators can refer to the following Recommended
Releases documents. If a security advisory recommends a later release,
Cisco recommends following the advisory guidance.
Cisco MDS Series Switches
Cisco Nexus 1000V for VMware Switch
Cisco Nexus 3000 Series and 3500 Series Switches
Cisco Nexus 5000 Series Switches
Cisco Nexus 5500 Platform Switches
Cisco Nexus 6000 Series Switches
Cisco Nexus 7000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series ACI-Mode Switches
For help determining the best Cisco NX-OS Software release for Cisco UCS,
refer to the Recommended Releases documents in the release notes for the
device.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy . This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Related to This Advisory
o Cisco Event Response: March 2019 Cisco FXOS and NX-OS Software Security
Advisory Bundled Publication
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190306-nxos-cmdinj-1607
Revision History
o +---------+--------------------------+---------+--------+----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+----------------+
| 1.0 | Initial public release. | - | Final | 2019-March-06 |
+---------+--------------------------+---------+--------+----------------+
- --------------------------END INCLUDED TEXT--------------------
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