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AUSCERT External Security Bulletin Redistribution
ESB-2019.3877
Cisco Expressway Series and TelePresence Video Communication
Server Cross-Site Scripting Vulnerability
18 October 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Expressway Series
Cisco TelePresence Video Communication Server
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12705
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191016-vcs-xss
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Cisco Expressway Series and TelePresence Video Communication Server Cross-Site
Scripting Vulnerability
Priority: Medium
Advisory ID: cisco-sa-20191016-vcs-xss
First Published: 2019 October 16 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvq09300
CVE-2019-12705
CWE-79
CVSS Score:
6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco Expressway
Series and Cisco TelePresence Video Communication Server (VCS) could allow
an unauthenticated, remote attacker to conduct a cross-site scripting (XSS)
attack against a user of the web-based management interface of an affected
system.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface of the affected system. An attacker
could exploit this vulnerability by persuading a user of the interface to
click a malicious link. A successful exploit could allow the attacker to
execute arbitrary script code in the context of the affected interface or
access sensitive browser-based information.
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-20191016-vcs-xss
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco Expressway
Series and TelePresence VCS running a software release earlier than Release
X12.5.4.
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 and Alerts 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, Cisco Expressway Series and TelePresence VCS
releases X12.5.4 and later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (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 Colin Williams 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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20191016-vcs-xss
Revision History
o +---------+--------------------------+---------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+-----------------+
| 1.0 | Initial public release. | - | Final | 2019-October-16 |
+---------+--------------------------+---------+--------+-----------------+
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