Multiple vulnerabilities have been identified in Citrix Access Gateway, which could be exploited by attackers to bypass security restrictions, disclose sensitive information or take complete control of an affected system.
The first issue is caused due to residual information being left on client devices, which could be exploited by an attacker to gain unauthorized access to a user's active session.
The second vulnerability is caused by errors in the "Net6Helper.DLL" and "npCtxCAO.dll" client components, which could be exploited by attackers to execute arbitrary code on a vulnerable client in the context of the user currently logged in.
The third issue is caused by an unspecified input validation error, which could be exploited by an attacker to redirect a user to an arbitrary web site.
The fourth vulnerability is caused by errors in the web based administration console, which could be exploited to perform unauthorized configuration changes on a vulnerable appliance via cross site request forgery attacks.
Credits
Vulnerabilities reported by Martin ONeal (Corsaire), Michael White (Symantec) and Paul Johnston.
ChangeLog
2007-07-20 : Initial release
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