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AUSCERT External Security Bulletin Redistribution
ESB-2023.0178
Cisco CX Cloud Agent Privilege Escalation Vulnerabilities
12 January 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco CX Cloud Agent
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2023-20044 CVE-2023-20043
Original Bulletin:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cxagent-gOq9QjqZ
Comment: CVSS (Max): 6.7 CVE-2023-20044 (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: Cisco Systems
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
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Cisco CX Cloud Agent Privilege Escalation Vulnerabilities
Priority: Medium
Advisory ID: cisco-sa-cxagent-gOq9QjqZ
First Published: 2023 January 11 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCwa73699 CSCwd51828
CVE Names: CVE-2023-20043 CVE-2023-20044
Summary
o Multiple vulnerabilities in Cisco CX Cloud Agent could allow an
authenticated, local attacker to elevate privileges. These vulnerabilities
are due to insecure file permissions. A successful exploit could allow an
attacker to take complete control of the affected device.
For more information about these vulnerabilities, see the Details section
of this advisory.
Cisco has released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cxagent-gOq9QjqZ
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco CX Cloud
Agent.
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 these vulnerabilities.
Cisco has confirmed that CVE-2023-20044 does not affect Cisco CX Cloud
Agent when a release earlier than Release 2.2 was installed from an open
virtual appliance (OVA) file and then upgraded to Release 2.2.
Details
o The vulnerabilities are not dependent on one another. Exploitation of one
of the vulnerabilities is not required to exploit the other vulnerability.
In addition, a software release that is affected by one of the
vulnerabilities may not be affected by the other vulnerability.
Details about the vulnerabilities are as follows:
CVE-2023-20043: Cisco CX Cloud Agent Privilege Escalation Vulnerability
A vulnerability in Cisco CX Cloud Agent could allow an authenticated, local
attacker to elevate their privileges on an affected device. This
vulnerability is due to insecure file permissions. An attacker could
exploit this vulnerability by calling the script with the sudo command. A
successful exploit could allow the attacker to take complete control of the
affected device.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCwa73699
CVE ID: CVE-2023-20043
Security Impact Rating (SIR): Medium
CVSS Base Score: 6.7
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE-2023-20044: Cisco CX Cloud Agent Privilege Escalation Vulnerability
A vulnerability in Cisco CX Cloud Agent could allow an authenticated, local
attacker to elevate their privileges on an affected device. This
vulnerability is due to insecure file permissions. An attacker could
exploit this vulnerability by persuading technical support to update
certain settings, resulting in the insecure script being called. A
successful exploit could allow the attacker to take complete control of the
affected device.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCwd51828
CVE ID: CVE-2023-20044
Security Impact Rating (SIR): Medium
CVSS Base Score: 6.7
CVSS Vector:CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
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
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 vulnerabilities that are
described in this advisory and which release included the fix for these
vulnerabilities.
CVE-2023-20043
Cisco CX Cloud Agent Release First Fixed Release
1.8 and earlier 1.9
1.8 upgraded to 2.2 Not vulnerable
2.2 installed from OVA file 2.2.1
2.2.1 Not vulnerable
CVE-2023-20044
Cisco CX Cloud Agent Release First Fixed Release
2 and earlier 2.2.1
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 Kanstantsin Markelau 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-cxagent-gOq9QjqZ
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2023-JAN-11 |
+----------+---------------------------+----------+--------+--------------+
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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