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TITLE:
PDF-XChange Viewer Content Parsing Memory Corruption Vulnerability

SECUNIA ADVISORY ID:
SA37706

VERIFY ADVISORY:
http://secunia.com/advisories/37706/

DESCRIPTION:
Secunia Research has discovered a vulnerability in PDF-XChange
Viewer, which can be exploited by malicious people to compromise a
user's system.

The vulnerability is caused due to an input validation error in
PDFXCview.exe when parsing certain content and can be exploited to
corrupt memory via a specially crafted PDF file.

Successful exploitation allows execution of arbitrary code when a
user views a malicious PDF document.

NOTE: The vulnerable code is e.g. also present in the bundled
PDF-XChange shell extension (XCShInfo.dll), which is installed by
default. This vector allows exploitation as soon as a user e.g.
selects a malicious PDF file or hovers the mouse pointer over it.

The vulnerability is confirmed in version 2.0.42.9. Other versions
may also be affected.

SOLUTION:
Update to version 2.044.

A fixed version is also bundled with version 4.0174 of the various
PDF-XChange editions.

PROVIDED AND/OR DISCOVERED BY:
Carsten Eiram, Secunia Research.

CHANGELOG:
2010-01-04: Added "PDF-XChange 4.x" as an affected product since
older versions bundle the vulnerable PDF-XChange Viewer product.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2009-64/

Tracker Software Products:
http://www.docu-track.com/news/show/80

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About:
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vulnerabilities.

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