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Intelligence Center » Browse All Vulnerabilities » CVE-2011-2883

Overview

Vulnerability Score 9.3 9.3
CVE Id CVE-2011-2883
Last Modified 22 Jul 2011 12:00:00
Published 21 Jul 2011 07:55:04
Confidentiality Impact COMPLETE COMPLETE
Integrity Impact COMPLETE COMPLETE
Availability Impact COMPLETE COMPLETE
Access Vector NETWORK
Access Complexity MEDIUM
Authentication NONE

CVE-2011-2883

Summary

The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 attempts to validate signed DLLs by checking the certificate subject, not the signature, which allows man-in-the-middle attackers to execute arbitrary code via HTTP header data referencing a DLL that was signed with a crafted certificate.

Vulnerable Systems

Application

  • Citrix Access Gateway 8.1

  • Citrix Access Gateway 9.0

  • Citrix Access Gateway 9.1


References

IDEFENSE - 20110714 Citrix Access Gateway ActiveX Arbitrary Libary Loading Vulnerability


Last Updated: 27 May 2016 10:57:12