A vulnerability has been identified in Citrix Access Gateway, which could be exploited by attackers to bypass security restrictions. This issue is caused by an unspecified error that could allow unauthenticated access to network resources. No further details have been disclosed [...]
Solution
Upgrade to Citrix Access Gateway Standard Edition version 4.5.7 Rev A :
http://support.citrix.com/article/CTX116762
Or apply patch for versions 4.5.5, 4.5.6 and 4.5.7 :
http://support.citrix.com/article/CTX117001
Credits
Vulnerability reported by the vendor.
ChangeLog
2008-05-13 : Initial release
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