PT-2011-41: Stored XSS vulnerability in Citrix License Administration Console

Vulnerable software

Citrix XenServer Administration Console 
Version: 11.9 and earlier

Application link:

Severity level

Severity level: Medium 
Impact: Cross-site scripting 
Access Vector: Network exploitable 

CVSS v2: 
Base Score: 4.9 
Vector: (AV:N/AC:H/Au:S/C:C/I:N/A:N)

CVE: not assigned


Vulnerability description

Positive Research Center has discovered a Stored XSS vulnerability in Citrix License Administration Console.

Since special characters in usernames are not properly escaped, a stored XSS attack is possible.

How to fix

Update your software up to the latest version

Advisory status

10.11.2011 - Vendor is notified
10.11.2011 - Vendor gets vulnerability details
13.03.2012 - Vendor releases fixed version and details
27.03.2012 - Public disclosure


The vulnerability was discovered by Maxim Tsoy, Kirill Mosolov, Positive Research Center (Positive Technologies Company)


Reports on the vulnerabilities previously discovered by Positive Research: