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AUSCERT External Security Bulletin Redistribution
ESB-2019.3211.2
Multiple Cisco Enterprise Network Functions Virtualization
Infrastructure Software Vulnerabilities
12 September 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Enterprise Network Functions Virtualization Infrastructure Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Overwrite Arbitrary Files -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12623 CVE-2019-1984
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-filewrite
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-enumeration
Comment: This bulletin contains two (2) Cisco Systems security advisories.
Revision History: September 12 2019: Initial target release of fixed code is
still affected. Added information about
new target release for the complete fix.
August 22 2019: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Enterprise Network Functions Virtualization Infrastructure Software
Arbitrary File Write Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190821-nfv-filewrite
First Published: 2019 August 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvp17532
CVE-2019-1984
CWE-20
CVSS Score:
6.5 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in Cisco Enterprise Network Functions Virtualization
Infrastructure Software (NFVIS) could allow an authenticated, remote
attacker with administrator privileges to overwrite files on the underlying
operating system (OS) of an affected device.
The vulnerability is due to improper input validation in an NFVIS
file-system command. An attacker could exploit this vulnerability by using
crafted variables during the execution of an affected command. A successful
exploit could allow the attacker to overwrite arbitrary files on the
underlying OS.
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-20190821-nfv-filewrite
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Enterprise
NFVIS releases earlier than Release 3.12.1.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o 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.
Fixed Releases
At the time of publication, Cisco Enterprise NFVIS releases 3.12.1 and
later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190821-nfv-filewrite
Revision History
o +---------+--------------------------+---------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+-----------------+
| 1.0 | Initial public release. | - | Final | 2019-August-21 |
+---------+--------------------------+---------+--------+-----------------+
- -------------------------------------------------------------------------------
Cisco Enterprise Network Functions Virtualization Infrastructure Software File
Enumeration Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190821-nfv-enumeration
First Published: 2019 August 21 16:00 GMT
Last Updated: 2019 September 11 19:15 GMT
Version 2.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvp99184
CVE-2019-12623
CWE-538
CVSS Score:
4.3 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the web server functionality of Cisco Enterprise Network
Functions Virtualization Infrastructure Software (NFVIS) could allow an
authenticated, remote attacker to perform file enumeration on an affected
system.
The vulnerability is due to the web server responding with different error
codes for existing and non-existing files. An attacker could exploit this
vulnerability by sending GET requests for different file names. A
successful exploit could allow the attacker to enumerate files residing on
the system.
Cisco will release 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-20190821-nfv-enumeration
Affected Products
o Vulnerable Products
At the initial time of publication, this vulnerability affected Cisco
Enterprise Network Compute Systems that were running NFVIS releases earlier
than Release 3.12.1.
The fix has been found to be incomplete in NFVIS releases 3.12.1 and
3.12.2. NFVIS releases 4.1 and later will contain the complete fix.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o 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.
Fixed Releases
At the initial time of publication, Cisco Enterprise NFVIS releases 3.12.1
and later contained the fix for this vulnerability.
The fix has been found to be incomplete in NFVIS releases 3.12.1 and
3.12.2. NFVIS releases 4.1 and later will contain the complete fix.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
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 Cisco would like to thank Tahir Khan and team from Verizon's product
security group for reporting this vulnerability.
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20190821-nfv-enumeration
Revision History
o +---------+---------------------+------------+--------+-------------------+
| Version | Description | Section | Status | Date |
+---------+---------------------+------------+--------+-------------------+
| | Initial target | | | |
| | release of fixed | Summary, | | |
| | code is still | Vulnerable | | |
| 2.0 | affected. Added | Products, | Final | 2019-September-11 |
| | information about | and Fixed | | |
| | new target release | Software | | |
| | for the complete | | | |
| | fix. | | | |
+---------+---------------------+------------+--------+-------------------+
| 1.0 | Initial public | - | Final | 2019-August-21 |
| | release. | | | |
+---------+---------------------+------------+--------+-------------------+
- --------------------------END INCLUDED TEXT--------------------
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