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AUSCERT External Security Bulletin Redistribution
ESB-2023.3820.2
Cisco Duo Authentication Proxy Information Disclosure Vulnerability
10 July 2023
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AusCERT Security Bulletin Summary
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Product: Cisco Duo Authentication Proxy
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2023-20207
Original Bulletin:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-duo-auth-info-JgkSWBLz
Revision History: July 10 2023: Vendor updated affected version
July 6 2023: Initial Release
– ————————–BEGIN INCLUDED TEXT——————–
Cisco Duo Authentication Proxy Information Disclosure Vulnerability
Priority: Medium
Advisory ID: cisco-sa-duo-auth-info-JgkSWBLz
First Published: 2023 July 5 16:00 GMT
Last Updated: 2023 July 7 15:45 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCwf65004
CVE Names: CVE-2023-20207
Summary
o A vulnerability in the logging component of Cisco Duo Authentication Proxy
could allow an authenticated, remote attacker to view sensitive information
in clear text on an affected system.
This vulnerability exists because certain unencrypted credentials are
stored. An attacker could exploit this vulnerability by accessing the logs
on an affected system and obtaining credentials that they may not normally
have access to. A successful exploit could allow the attacker to view
sensitive information in clear text.
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-duo-auth-info-JgkSWBLz
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Duo
Authentication Proxy.
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.
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
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 that is
described in this advisory and which release included the fix for this
vulnerability.
Cisco Duo Authentication Proxy Release First Fixed Release
5.8.1 5.8.2
6.0.0 6.0.1
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 during the resolution of a Cisco Duo support
case.
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-duo-auth-info-JgkSWBLz
Revision History
o +———+—————————–+———-+——–+————-+
| Version | Description | Section | Status | Date |
+———+—————————–+———-+——–+————-+
| 1.1 | Clarified affected version | Fixed | Final | 2023-JUL-07 |
| | in fixed release table. | Releases | | |
+———+—————————–+———-+——–+————-+
| 1.0 | Initial public release. | – | Final | 2023-JUL-05 |
+———+—————————–+———-+——–+————-+
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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