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AUSCERT External Security Bulletin Redistribution
ESB-2019.3618
Cisco NX-OS Software Virtualization Manager Command Injection Vulnerability
26 September 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco NX-OS
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Root Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12717
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-nxos-vman-cmd-inj
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco NX-OS Software Virtualization Manager Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20190925-nxos-vman-cmd-inj
First Published: 2019 September 25 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvk76030CSCvo19193
CVE-2019-12717
CWE-78
CVSS Score:
6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in a CLI command related to the virtualization manager
(VMAN) in Cisco NX-OS Software could allow an authenticated, local attacker
to execute arbitrary commands on the underlying Linux operating system with
root privileges.
The vulnerability is due to insufficient validation of arguments passed to
a specific VMAN CLI command on an affected device. 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 Linux operating system with
root privileges, which may lead to complete system compromise. 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-20190925-nxos-vman-cmd-inj
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco
products if they were running a vulnerable release of Cisco NX-OS Software:
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 7000 Series Switches
Nexus 7700 Series Switches
Nexus 9000 Series Switches in standalone NX-OS mode
Nexus 9500 R-Series Switching Platform
For information about which Cisco NX-OS Software releases were vulnerable
at the time of publication, see the Fixed Software section of this
advisory. 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.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 2100 Series
Firepower 4100 Series
Firepower 9300 Security Appliances
MDS 9000 Series Multilayer Switches
Nexus 1000 Virtual Edge for VMware vSphere
Nexus 1000V Switch for Microsoft Hyper-V
Nexus 1000V Switch for VMware vSphere
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
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
Nexus 3000 Series Switches, Nexus 3500 Platform Switches, and Nexus 9000
Series Switches in Standalone NX-OS Mode : CSCvo19193
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
Earlier than 5.0(3)U4 Not vulnerable
6.0(2) 7.0(3)I7(6)
7.0(3)I7 7.0(3)I7(6)
9.2 9.2(3)
9.3 Not Vulnerable
Nexus 3600 Platform Switches and Nexus 9500 R-Series Switching Platform :
CSCvo19193
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
7.0(3)F 9.2(3)
9.2 9.2(3)
9.3 Not Vulnerable
Nexus 5500 Series Switches, 5600 Series Switches and 6000 Series Switches :
CSCvk76030
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
Earlier than 6.0(2) Not vulnerable
7.0 7.3(5)N1(1)
7.1 7.3(5)N1(1)
7.2 7.3(5)N1(1)
7.3 7.3(5)N1(1)
Nexus 7000 and 7700 Series Switches : CSCvk76030
Cisco NX-OS Software Release First Fixed Release for This Vulnerability
Earlier than 6.2 Not vulnerable
6.2 8.0(1)
7.2 8.0(1)
7.3 8.0(1)
8.0 Not vulnerable
8.1 Not vulnerable
8.2 Not vulnerable
8.3 Not vulnerable
8.4 Not vulnerable
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 by Eugenio Iavarone of Cisco 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-20190925-nxos-vman-cmd-inj
Revision History
o +---------+------------------------+---------+--------+-------------------+
| Version | Description | Section | Status | Date |
+---------+------------------------+---------+--------+-------------------+
| 1.0 | Initial public | - | Final | 2019-September-25 |
| | release. | | | |
+---------+------------------------+---------+--------+-------------------+
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