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AUSCERT External Security Bulletin Redistribution
ESB-2008.1009 -- [Win]
Vulnerability in Citrix Web Interface 5.0 for Java Application Servers
could result in failure to terminate Web Interface user sessions
29 October 2008
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AusCERT Security Bulletin Summary
---------------------------------
Product: Citrix Web Interface 5.0
Publisher: Citrix
Operating System: Windows
Impact: Inappropriate Access
Access: Existing Account
Original Bulletin: http://support.citrix.com/article/CTX118768
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Vulnerability in Citrix Web Interface 5.0 for Java Application Servers could
result in failure to terminate Web Interface user sessions
Document ID: CTX118768 / Created On: Oct 24, 2008 / Updated On: Oct 24, 2008
Average Rating: not yet rated
Severity: Medium
Description of Problem
A vulnerability has been identified in Citrix Web Interface 5.0 for Java
Application Servers that could result in the disconnection process failing to
correctly terminate a users Web Interface session. This could potentially
allow other authenticated users to gain unauthorized access to the existing
Web Interface session using the same browser instance.
This vulnerability only affects Web Interface versions 5.0 and 5.0.1 when
deployed with a Java application server. Older versions of Web Interface for
Java Application Servers and all versions of Web Interface for Microsoft
Internet Information Services are not affected by this issue.
Mitigating Factors
This vulnerability can only be exploited by an attacker with access to
the same browser instance as the authorized user
In order to exploit this vulnerability, an attacker would require valid
credentials for the target Web Interface site
What Customers Should Do
This vulnerability has been addressed in Citrix Web Interface 5.0.2 for Java
Application Servers. Citrix recommends that customers upgrade to this version.
This upgrade can be obtained from the product downloads section of the Citrix
Web site (My Citrix account required) at
https://www.citrix.com/site/SS/downloads/.
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:
* Web Interface 5.0
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