PT-2011-39: Denial of Service in Citrix XenServer Workload Balancer
Vulnerable software
Citrix XenServer Workload Balancer
Version: 6.0.0.1 and earlier
Application link:
http://www.citrix.com/English/ps2/products/subfeature.asp?contentID=2306271
Severity level
Severity level: High
Impact: Denial of Service
Access Vector: Network exploitable
CVSS v2:
Base Score: 7.8
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVE: not assigned
Vulnerability description
Positive Research Center has discovered a Denial of Service vulnerability in Citrix XenServer Workload Balancer.
Remote attackers can cause an unhandled exception in the DwmWebSvc component by sending a specially crafted HTTP request.
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, Positive Research Center (Positive Technologies Company)
References
http://en.securitylab.ru/lab/PT-2011-39
http://support.citrix.com/article/CTX132252
Reports on the vulnerabilities previously discovered by Positive Research:
http://ptsecurity.com/research/advisory/
http://en.securitylab.ru/lab/