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Secunia Research 04/01/2010
- PDF-XChange Viewer Content Parsing Memory Corruption Vulnerability -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
* PDF-XChange Viewer 2.0.42.9
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System compromise
Where: Remote
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3) Vendor's Description of Software
"Those wishing to view PDF files on their Windows PC's now have a
choice when it comes to Viewing PDF files - the PDF-XChange Viewer is
smaller, faster and more feature rich than the Adobe Reader which has
until now been the Reader of choice for PDF files - we think that's
about to change!".
Product Link:
http://www.docu-track.com/home/prod_user/
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4) Description of Vulnerability
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.
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5) Solution
Update to version 2.044.
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6) Time Table
29/12/2009 - Vendor notified.
29/12/2009 - Vendor response received.
31/12/2009 - Vendor issues fixed version and statement.
04/01/2010 - Public disclosure.
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7) Credits
Discovered by Carsten Eiram, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has not
currently assigned a CVE identifier for the vulnerability.
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9) About Secunia
Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:
http://secunia.com/advisories/business_solutions/
Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.
http://secunia.com/advisories/
Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:
http://secunia.com/secunia_research/
Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:
http://secunia.com/corporate/jobs/
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/advisories/mailing_lists/
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-64/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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