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AUSCERT External Security Bulletin Redistribution
ESB-2023.1715
Cisco Access Point Software Command Injection Vulnerability
23 March 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Catalyst Series APs
Aironet Series APs
Embedded Services APs
Integrated APs
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2023-20097
Original Bulletin:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironetap-cmdinj-6bjT4FL8
Comment: CVSS (Max): 4.6 CVE-2023-20097 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/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:C/C:L/I:L/A:N
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Cisco Access Point Software Command Injection Vulnerability
Priority: Medium
Advisory ID: cisco-sa-aironetap-cmdinj-6bjT4FL8
First Published: 2023 March 22 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCwc70131
CVE Names: CVE-2023-20097
Summary
o A vulnerability in Cisco access points (AP) software could allow an
authenticated, local attacker to inject arbitrary commands and execute them
with root privileges.
This vulnerability is due to improper input validation of commands that are
issued from a wireless controller to an AP. An attacker with Administrator
access to the CLI of the controller could exploit this vulnerability by
issuing a command with crafted arguments. A successful exploit could allow
the attacker to gain full root access on the AP.
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-aironetap-cmdinj-6bjT4FL8
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco
products if they were running a vulnerable software release in the default
configuration:
6300 Series Embedded Services APs
Aironet 1540 Series APs
Aironet 1560 Series APs
Aironet 1800 Series APs
Aironet 2800 Series APs
Aironet 3800 Series APs
Aironet 4800 APs
Catalyst 9100 APs
Catalyst IW6300 Heavy Duty Series APs
Catalyst IW9165 Heavy Duty Series
Catalyst IW9165 Rugged Series
Catalyst IW9167 Heavy Duty Series
Integrated AP on 1100 Integrated Services Routers
For information about which Cisco 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 any Cisco
access points that are not listed in the Vulnerable Products section of
this advisory.
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.
Fixed Releases
In the following tables, the left column lists Cisco software releases. The
right column indicates whether a release is affected by the vulnerability
that is described in this advisory and the first release that includes the
fix for this vulnerability. Customers are advised to upgrade to an
appropriate fixed software release as indicated in this section.
APs Managed by Wireless LAN Controller or Mobility Express
Cisco Wireless LAN Controller Software Release First Fixed Release
8.9 and earlier Migrate to a fixed release.
8.10 8.10.181.0 ^1
1. Release 8.10.181.0 has been deferred. Cisco recommends upgrading to
Release 8.10.183.0.
APs Managed by Catalyst 9800 Wireless Controller or Embedded Wireless
Controller
Cisco IOS XE Software Release for Wireless LAN First Fixed Release
Controllers
16.12 16.12.8
17.1 Migrate to a fixed
release.
17.2 Migrate to a fixed
release.
17.3 17.3.6
17.4 Migrate to a fixed
release.
17.5 Migrate to a fixed
release.
17.6 17.6.5
17.8 Migrate to a fixed
release.
17.9 17.9.2
17.10 Not vulnerable.
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 by Matthew Street 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.
Subscribe to Cisco Security Notifications
o Subscribe
Related to This Advisory
o
URL
o https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironetap-cmdinj-6bjT4FL8
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2023-MAR-22 |
+----------+---------------------------+----------+--------+--------------+
Legal Disclaimer
o 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.
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