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Check Point Advisories

Citrix Access Gateway nsepacom ActiveX Control Buffer Overflow (CVE-2011-2592)

Check Point Reference: CPAI-2012-394
Date Published: 2 Dec 2012
Severity: Medium
Last Updated:
Source: CVE-2011-2592
Protection Provided by:

Security Gateway

Who is Vulnerable? Citrix Systems Access Gateway Plug-in for Windows prior to
Vulnerability Description A heap buffer overflow vulnerability has been reported in Citrix Access Gateway Plug-in for Windows.
Vulnerability DetailsThe vulnerability is due to insufficient validation of a certain field in the HTTP responses to the requests sent by the vulnerable method. A remote attacker can exploit this issue by enticing a target user to open a specially crafted web page. Successful exploitation would result in arbitrary code injection and execution.

Protection Overview

This protection will detect and block specially crafted server responses.

In order for the protection to be activated, update your product to the latest update. For information on how to update , go to SBP-2006-05, Protection tab and select the version of your choice.

Security Gateway R75 / R71 / R70

  1. In the IPS tab, click Protections and find the Citrix Access Gateway nsepacom ActiveX Control Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

SmartView Tracker will log the following entries:
Attack Name: Web Client Enforcement Violation
Attack Information: Citrix Access Gateway nsepacom ActiveX Control Buffer Overflow