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AUSCERT External Security Bulletin Redistribution
ESB-2021.2962
Cisco Identity Services Engine Cross-Site Scripting Vulnerability
2 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Identity Services Engine (ISE)
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-34759
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-4HnZFewr
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Cisco Identity Services Engine Cross-Site Scripting Vulnerability
Priority: Medium
Advisory ID: cisco-sa-ise-xss-4HnZFewr
First Published: 2021 September 1 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvy11865
CVE Names: CVE-2021-34759
CWEs: CWE-79
Summary
o A vulnerability in the web-based management interface of Cisco Identity
Services Engine (ISE) Software could allow an authenticated, remote
attacker with administrative credentials to conduct a cross-site scripting
(XSS) attack against a user of the interface.
This vulnerability exists because the web-based management interface does
not properly validate user-supplied input. An attacker could exploit this
vulnerability by injecting malicious code into specific pages of the
interface. A successful exploit could allow the attacker to execute
arbitrary script code in the context of the interface or access sensitive,
browser-based information. To exploit this vulnerability, an attacker would
need valid administrative credentials.
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-ise-xss-4HnZFewr
Cisco has released software updates that address this vulnerability. There
are workarounds that address this vulnerability.
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following
releases of Cisco ISE Software:
2.2 Patch17 and earlier
2.3 Patch7 and earlier
2.4 Patch14 and earlier
2.6 Patch9 and earlier
2.7 Patch4 and earlier
3.0 Patch3 and earlier
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
(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.
Cisco ISE Releases First Fixed Release
Earlier than 2.6 Migrate to a fixed release.
2.6 2.6 Patch10
2.7 2.7 Patch5 (Sep 2021)
3.0 3.0 Patch4 (Sep 2021)
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is aware that
proof-of-concept exploit code is available for the vulnerability described
in this advisory.
The Cisco PSIRT is not aware of any malicious use of the vulnerability that
is described in this advisory.
Source
o Cisco would like to thank Cristian Mocanu of Deloitte for reporting this
vulnerability.
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.
Related to This Advisory
o Cross-Site Scripting
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-4HnZFewr
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2021-SEP-01 |
+----------+---------------------------+----------+--------+--------------+
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