Secunia Research: MuPDF Firefox Plugin Buffer Overflow Vulnerability

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                     Secunia Research 06/05/2011

 	- MuPDF Firefox Plugin Buffer Overflow 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 

* MuPDF (Plugin for Firefox) version 2008.09.02.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System Access
Where:  Remote

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3) Vendor's Description of Software 

"The MuPDF Plug-in for Firefox on Windows".

Product Link:
http://www.mupdf.com/plugin/install.html

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in the MuPDF plugin
for Firefox, which can be exploited by malicious people to compromise
a user's system.

The vulnerability is caused by a boundary error within the
"pdfmoz_onmouse()" function in apps/mozilla/moz_main.c and can be
exploited to cause a stack-based buffer overflow by e.g. tricking a
user into visiting a specially crafted website.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Use another product.

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6) Time Table 

21/01/2011 - Vendor notified.
16/03/2011 - Requested status update.
04/04/2011 - Vendor purges Firefox plugin from GIT repository.
06/05/2011 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2011-0341 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2011-38/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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