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CVE-2011-2593

Status Candidate

Overview

Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for Windows 9.x before 9.3-57.5 and 10.0 before 10.0-69.4 allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header, which triggers a heap-based buffer overflow.

Related Files

Citrix Access Gateway Plug-in For Windows nsepacom Integer Overflow
Posted Aug 1, 2012
Authored by Dmitriy Pletnev | Site secunia.com

Secunia Research has discovered a vulnerability in Citrix Access Gateway Plug-in for Windows, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused by an integer overflow error in the nsepacom ActiveX control (nsepa.exe) when processing HTTP responses based on the request via the "StartEpa()" method. This can be exploited to cause a heap-based buffer overflow via a specially crafted "Content-Length" HTTP response header. Successful exploitation may allow execution of arbitrary code. Citrix Access Gateway Plug-in for Windows version 9.3.49.5 is affected.

tags | advisory, web, overflow, arbitrary, activex
systems | windows
advisories | CVE-2011-2593
SHA-256 | e3fca65bdb01a3b7b24ef54cae23d5e08cd0034667d410d5364cab845d4fe8a7
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