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AUSCERT External Security Bulletin Redistribution
ESB-2011.0876
Cross Site Scripting vulnerability in Citrix Access Gateway
Enterprise Edition Logon Portal
25 August 2011
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AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix Access Gateway Enterprise Edition
Publisher: Citrix
Operating System: Windows
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
Original Bulletin:
http://support.citrix.com/article/CTX129971
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Cross Site Scripting vulnerability in Citrix Access Gateway Enterprise Edition
Logon Portal
Document ID: CTX129971
Created On: 23-Aug-2011
Updated On: 23-Aug-2011
Average Rating: 5 (2 ratings)
Severity: Medium
Description of Problem
A cross-site scripting vulnerability has been discovered in the logon portal
of Citrix Access Gateway Enterprise Edition.
This vulnerability could potentially be used to execute malicious client-side
script in the same context as the Access Gateway Enterprise Edition. If this
vulnerability is used to execute script in the browser of an authenticated
user then the script may be able to gain access to the authenticated users
session, or other potentially sensitive information.
This vulnerability is present in all versions of Citrix Access Gateway
Enterprise Edition up to and including version 9.2-49.8.
What Customers Should Do
This vulnerability has been addressed in version 9.2-50.4 of the Access
Gateway Enterprise Edition software and later. Citrix Access Gateway
Enterprise Edition version 9.3 is not affected by this vulnerability.
Citrix recommends that customers upgrade their Access Gateway Enterprise
Edition software to this version. Customers using earlier versions of the
Access Gateway software are advised to upgrade their Access Gateway software
to a version that contains the fix for this issue.
The Access Gateway Enterprise Edition software can be found at the following
address:
https://www.citrix.com/English/ss/downloads/results.asp?productID=15005&c1=pov1680613&c2=sot36239
Customers using the Access Gateway Enterprise Edition version 9.1 in the Common
Criteria evaluated configuration should apply the Common Criteria specific
version of the 9.1 firmware (9.1-100.8) from the following location:
http://www.citrix.com/English/ss/downloads/details.asp?downloadId=2315193&productId=15005
What Citrix Is Doing
Citrix is notifying customers and channel partners about this potential
security issue. This article is also available from the Citrix Knowledge
Center at http://support.citrix.com/.
Obtaining Support on This Issue
If you require technical assistance with this issue, please contact Citrix
Technical Support. Contact details for Citrix Technical Support are available
at http://www.citrix.com/site/ss/supportContacts.asp.
Reporting Security Vulnerabilities to Citrix
Citrix welcomes input regarding the security of its products and considers any
and all potential vulnerabilities seriously. If you would like to report a
security issue to Citrix, please compose an e-mail to secure@citrix.com stating
the exact version of the product in which the vulnerability was found and the
steps needed to reproduce the vulnerability.
This document applies to:
* Access Gateway 8.0 Enterprise Edition
* Access Gateway 8.1 Enterprise Edition
* Access Gateway 9.0 Enterprise Edition
* Access Gateway 9.1 Enterprise Edition
* Access Gateway 9.2 Enterprise Edition
* Access Gateway 9.3 Enterprise Edition
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