A vulnerability has been identified in Citrix MetaFrame Presentation Server, Presentation Server and Access Essentials, which could be exploited by remote attackers to gain unauthorized access to arbitrary ports. This issue is caused by an error in the Session Reliability service when processing specifically crafted requests, which could be exploited by attackers to bypass network security policies and remotely establish a TCP connection to any port on the local machine.
Credits
Vulnerability reported by Andrew Christensen (FortConsult).
ChangeLog
2007-05-23 : Initial release
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