PT-2011-33: URL redirector abuse in Citrix XenServer Web Self Service

(PT-2011-33) Positive Technologies Security Advisory
URL redirector abuse in Citrix XenServer Web Self Service

Vulnerable software

Citrix XenServer Web Self Service
Version: 1.1 and earlier

Link:
http://www.citrix.com/English/ps2/products/feature.asp?contentID=2316933

Severity level

Severity level: Medium
Impact: Phishing
Access Vector: Remote

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

CVE: not assigned

 

Vulnerability description

The specialists of the Positive Research center have detected "URL redirector abuse" vulnerability in Citrix XenServer Web Self Service.

URL redirector (GET parameter 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
10.03.2012 - Vendor releases fixed version and details
28.09.2012 - Public disclosure

Credits

The vulnerability has discovered by Ilya Smith, Maxim Tsoy, Positive Research Center (Positive Technologies Company)

References

http://en.securitylab.ru/lab/PT-2011-33
http://support.citrix.com/article/CTX132219

Reports on the vulnerabilities previously discovered by Positive Research:

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

About Positive Technologies

Positive Technologies www.ptsecurity.com is among the key players in the IT security market in Russia.

The principal activities of the company include the development of integrated tools for information security monitoring (MaxPatrol); providing IT security consulting services and technical support; development of the Securitylab leading Russian information security portal.

Among the clients of Positive Technologies, there are more than 40 state enterprises, more than 50 banks and financial organizations, 20 telecommunication companies, more than 40 plant facilities, as well as IT, service and retail companies from Russia, the CIS countries, the Baltic States, China, Ecuador, Germany, Great Britain, Holland, Iran, Israel, Japan, Mexico, the Republic of South Africa, Thailand, Turkey, and the USA.

Positive Technologies is a team of highly skilled developers, advisers and experts with years of vast hands-on experience. The company specialists possess professional titles and certificates; they are the members of various international societies and are actively involved in the IT security field development.