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AUSCERT External Security Bulletin Redistribution
ESB-2018.1511
Cisco NFVIS patches vulnerabilities
17 May 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Enterprise NFV Infrastructure Software (NFVIS)
Publisher: Cisco Systems
Operating System: Linux variants
Network Appliance
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-0279
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-nfvis-cli-command-injection
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-nfvis
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-nfvis-path-traversal
Comment: This bulletin contains three (3) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Enterprise NFV Infrastructure Software CLI Command Injection
Vulnerability
Severity: Medium
Advisory ID: cisco-sa-20180516-nfvis-cli-command-injection
First Published: 2018 May 16 16:00 GMT
Last Updated: 2018 May 16 17:46 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvi09723
CVSS Score:
Base 4.2
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
CVE-2018-0324
Summary
*
A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software
(NFVIS) could allow an authenticated, high-privileged, local attacker to
perform a command injection attack.
The vulnerability is due to insufficient input validation of command
parameters in the CLI parser. An attacker could exploit this vulnerability
by invoking a vulnerable CLI command with crafted malicious parameters. An
exploit could allow the attacker to execute arbitrary commands with a non-
root user account on the underlying Linux operating system of the affected
device.
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-20180516-nfvis-cli-command-injection
Affected Products
* Vulnerable Products
This vulnerability affects Cisco Enterprise NFV Infrastructure Software
(NFVIS). For information about affected software releases, consult the
Cisco bug ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
* There are no workarounds that address this vulnerability.
Fixed Software
* For information about fixed software releases, consult the Cisco bug ID(s)
at the top of this advisory.
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.
Exploitation and Public Announcements
* 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
* This vulnerability was reported to Cisco by the Security Teams of Orange
Group.
URL
* https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180516-nfvis-cli-command-injection
Revision History
*
+-----------------------------------------------------------------------------+
| Version | Description | Section | Status | Date |
|---------+----------------------------------+---------+--------+-------------|
| 1.1 | Changed the credits in the | Source | Final | 2018-May-16 |
| | Source section. | | | |
|---------+----------------------------------+---------+--------+-------------|
| 1.0 | Initial public release. | - | Final | 2018-May-16 |
+-----------------------------------------------------------------------------+
- --------------------------------------------------------------------------------
Cisco Enterprise NFV Infrastructure Software Linux Shell Access Vulnerability
Severity: High
Advisory ID: cisco-sa-20180516-nfvis
First Published: 2018 May 16 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvh25026
CVSS Score:
Base 6.3
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
CVE-2018-0279
Summary
*
A vulnerability in the Secure Copy Protocol (SCP) server of Cisco
Enterprise NFV Infrastructure Software (NFVIS) could allow an
authenticated, remote attacker to access the shell of the underlying Linux
operating system on the affected device.
The vulnerability is due to improper input validation of command arguments.
An attacker could exploit this vulnerability by using crafted arguments
when opening a connection to the affected device. An exploit could allow
the attacker to gain shell access with a non-root user account to the
underlying Linux operating system on the affected device.
Due to the system design, access to the Linux shell could allow execution
of additional attacks that may have a significant impact on the affected
system.
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-20180516-nfvis
Affected Products
* Vulnerable Products
This vulnerability affects Cisco devices that are running release 3.7.1,
3.6.3, or earlier releases of Cisco Enterprise NFV Infrastructure Software
(NFVIS) when access to the SCP server is allowed on the affected device.
Cisco NFVIS Releases 3.5.x and 3.6.x do allow access to the SCP server by
default, while Cisco NFVIS Release 3.7.1 does not.
Determining the Cisco NFVIS Release
To determine which Cisco NFVIS release is running on a device,
administrators can use the show version command in the CLI.
The following example shows the output of the show version command on a
device that is running Cisco NFVIS release 3.7.1:
encs# show version
version name "Cisco NFV Infrastructure Software"
version version 3.7.1-FC2
.
.
.
Determining Whether the Device Has Allowed Access to the SCP Server
Cisco NFVIS Release 3.7.1 allows access to the SCP server only if the
system settings ip-receive-acl CLI configuration command is applied to the
scpd service with an accept action.
The following example shows the output of the show running-config | begin
ip-receive-acl CLI command on a device that is running NFVIS Release 3.7.1
and on which access to the SCP server is allowed for clients in the
192.0.2.0/24 IP range:
encs# show running-config | begin ip-receive-acl
system settings ip-receive-acl 192.0.2.0/24
service [ scpd ]
action accept
.
.
.
Cisco NFVIS Releases 3.5.x and 3.6.x do not support the system settings
ip-receive-acl CLI configuration command. Access to the SCP server is
always allowed in these releases and cannot be disabled.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
* There are no workarounds that address this vulnerability.
Customers who are running Cisco NFVIS Releases 3.5.x or 3.6.x that do not
require the use of the SCP server are advised to use an external firewall
to restrict access to TCP port 22222 on the affected device.
Fixed Software
* 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
This vulnerability has been corrected in Cisco NFVIS Release 3.8.1 and
later.
Cisco NFVIS can be downloaded from the Software Center on Cisco.com by
clicking Browse all and navigating to Downloads Home > Routers > Network
Functions Virtualization > Enterprise NFV Infrastructure Software > NFV
Infrastructure Software.
Exploitation and Public Announcements
* 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
* This vulnerability was found during internal security testing.
URL
* https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20180516-nfvis
Revision History
*
+-----------------------------------------------------------------------------+
| Version | Description | Section | Status | Date |
|----------+-----------------------------+----------+---------+---------------|
| 1.0 | Initial public release. | - | Final | 2018-May-16 |
+-----------------------------------------------------------------------------+
- --------------------------------------------------------------------------------
Cisco Enterprise NFV Infrastructure Software Web Management Interface Path
Traversal Vulnerability
Severity: Medium
Advisory ID: cisco-sa-20180516-nfvis-path-traversal
First Published: 2018 May 16 16:00 GMT
Last Updated: 2018 May 16 18:05 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvh99631
CVSS Score:
Base 6.5
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
CVE-2018-0323
Summary
*
A vulnerability in the web management interface of Cisco Enterprise NFV
Infrastructure Software (NFVIS) could allow an authenticated, remote
attacker to conduct a path traversal attack on a targeted system.
The vulnerability is due to insufficient validation of web request
parameters. An attacker who has access to the web management interface of
the affected application could exploit this vulnerability by sending a
malicious web request to the affected device. A successful exploit could
allow the attacker to access sensitive information on the affected system.
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-20180516-nfvis-path-traversal
Affected Products
* Vulnerable Products
This vulnerability affects Cisco Enterprise NFV Infrastructure Software
(NFVIS). For information about affected software releases, consult the
Cisco bug ID(s) at the top of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
* There are no workarounds that address this vulnerability.
Fixed Software
* For information about fixed software releases, consult the Cisco bug ID(s)
at the top of this advisory.
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.
Exploitation and Public Announcements
* 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
* This vulnerability was reported to Cisco by the Security Teams of Orange
Group.
URL
* https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20180516-nfvis-path-traversal
Revision History
*
+-----------------------------------------------------------------------------+
| Version | Description | Section | Status | Date |
|---------+----------------------------------+---------+--------+-------------|
| 1.1 | Changed the credits in the | Source | Final | 2018-May-16 |
| | Source section. | | | |
|---------+----------------------------------+---------+--------+-------------|
| 1.0 | Initial public release. | ? | Final | 2018-May-16 |
+-----------------------------------------------------------------------------+
- -------------------------------------------------------------------------------
Legal Disclaimer
* THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
- --------------------------END INCLUDED TEXT--------------------
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