PT-2011-38: URL redirector abuse in Citrix XenServer Virtual Switch Controller

Vulnerable software

Citrix XenServer Virtual Switch Controller
Version: 6.0.1 and earlier

Application link: 
http://support.citrix.com/article/CTX129669

Severity level

Severity level: Medium
Impact: Phishing
Access Vector: Network exploitable 

CVSS v2: 
Base Score: 4.3 
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVE: not assigned

 

Vulnerability description

Positive Research Center has discovered an URL redirector abuse in Citrix XenServer Virtual Switch Controller.

URL redirector (GET parameter last_page of the login page) allows forwarding to an arbitrary location. It allows an attacker to conduct a phishing attack.

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

Credits

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

References

http://en.securitylab.ru/lab/PT-2011-38
https://support.citrix.com/article/CTX132476

Reports on the vulnerabilities previously discovered by Positive Research:

http://ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/

Threatscape