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AUSCERT External Security Bulletin Redistribution
ESB-2023.1131
Cisco Firepower 4100 Series, Firepower 9300 Security Appliances, and UCS
Fabric Interconnects Command Injection Vulnerability
23 February 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Firepower 4100 Series
Firepower 9300
UCS Series Fabric Interconnects
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2023-20015
Original Bulletin:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxfp-cmdinj-XXBZjtR
Comment: CVSS (Max): 6.0 CVE-2023-20015 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N)
CVSS Source: Cisco Systems
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
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Cisco Firepower 4100 Series, Firepower 9300 Security Appliances, and UCS Fabric
Interconnects Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-nxfp-cmdinj-XXBZjtR
First Published: 2023 February 22 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCwc52151 CSCwd11206 CSCwd11228
CVE Names: CVE-2023-20015
Summary
o A vulnerability in the CLI of Cisco Firepower 4100 Series, Cisco Firepower
9300 Security Appliances, and Cisco UCS 6200, 6300, 6400, and 6500 Series
Fabric Interconnects could allow an authenticated, local attacker to inject
unauthorized commands.
This vulnerability is due to insufficient input validation of commands
supplied by the user. An attacker could exploit this vulnerability by
authenticating to a device and submitting crafted input to the affected
command. A successful exploit could allow the attacker to execute
unauthorized commands within the CLI. An attacker with Administrator
privileges could also execute arbitrary commands on the underlying
operating system of Cisco UCS 6400 and 6500 Series Fabric Interconnects
with root -level privileges.
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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxfp-cmdinj-XXBZjtR
This advisory is part of the February 2023 Cisco FXOS and NX-OS Software
Security Advisory Bundled Publication. For a complete list of the
advisories and links to them, see Cisco Event Response: February 2023
Semiannual Cisco FXOS and NX-OS Software Security Advisory Bundled
Publication .
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 FXOS or NX-OS
Software:
Firepower 4100 Series
Firepower 9300 Security Appliances
UCS 6200 Series Fabric Interconnects
UCS 6300 Series Fabric Interconnects
UCS 6400 Series Fabric Interconnects
UCS 6500 Series Fabric Interconnects
Note: Only Cisco UCS 6400 and 6500 Series Fabric Interconnects allow a user
with Administrator privileges to execute commands on the underlying
operating system with root -level privileges. The other affected products
have a reduced impact and only allow a low-privileged user to access some
unauthorized unprivileged commands that execute within the CLI and not on
the underlying operating system.
For information about which Cisco software releases are vulnerable, see the
Fixed Software section 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.
Cisco has confirmed that this vulnerability does not affect the following
Cisco products:
Firepower 1000 Series
Firepower 2100 Series
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 3000 Series Switches
Nexus 5500 Platform Switches
Nexus 5600 Platform Switches
Nexus 6000 Series Switches
Nexus 7000 Series Switches
Nexus 9000 Series Fabric Switches in ACI mode
Nexus 9000 Series Switches in standalone NX-OS mode
Secure Firewall 3100 Series
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 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.
Cisco FXOS and NX-OS Software
To help customers determine their exposure to vulnerabilities in Cisco FXOS
and NX-OS Software, Cisco provides the Cisco Software Checker . This tool
identifies any Cisco security advisories that impact a specific software
release and the earliest release that fixes the vulnerabilities that are
described in each advisory ("First Fixed"). If applicable, the tool also
returns the earliest release that fixes all the vulnerabilities that are
described in all the advisories that the Software Checker identifies
("Combined First Fixed").
To use the tool, go to the Cisco Software Checker page and follow the
instructions. Alternatively, use the following form to search for
vulnerabilities that affect a specific software release. To use the form,
follow these steps:
1. Choose which advisories the tool will search-only this advisory, only
advisories with a Critical or High Security Impact Rating (SIR) , or
all advisories.
2. Choose the appropriate software.
3. Choose the appropriate platform.
4. Enter a release number-for example, 2.9.1.158 for Cisco Firepower 4100
Series Security Appliances or 7.0(3)I7(5) for Cisco Nexus 3000 Series
Switches.
5. Click Check .
Cisco UCS Software
At the time of publication, the release information in the following table
(s) was accurate. See the Details section in the bug ID(s) at the top of
this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column
indicates whether a release was affected by the vulnerability described in
this advisory and which release included the fix for this vulnerability.
UCS 6200, 6300, 6400, and 6500 Series Fabric Interconnects
Cisco UCS Software Release First Fixed Release
Earlier than 4.0 Migrate to a fixed release.
4.0 4.0(4o)
4.1 4.1(3k)
4.2 4.2(2d)
The Cisco Product Security Incident Response Team (PSIRT) validates only
the affected and fixed release information that is documented in this
advisory.
Exploitation and Public Announcements
o The Cisco 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 by Michael
Hegglin of the Cisco Advanced Security Initiatives Group (ASIG).
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.
Subscribe to Cisco Security Notifications
o Subscribe
Related to This Advisory
o Cisco Event Response: February 2023 Semiannual Cisco FXOS and NX-OS
Software Security Advisory Bundled Publication
URL
o https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxfp-cmdinj-XXBZjtR
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2023-FEB-22 |
+----------+---------------------------+----------+--------+--------------+
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