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Application:   Foxit Products GIF Conversion Memory Corruption Vulnerabilities (LZWMinimumCodeSize)

Platforms:   Windows

Versions:   The vulnerability is confirmed in version Foxit Reader 7.x. Other versions may also be affected.

Secunia:   SA63346

{PRL}:   2015-01

Author:   Francis Provencher (Protek Research Lab’s)

Website:   http://www.protekresearchlab.com/

Twitter:   @ProtekResearch

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1) Introduction
2) Report Timeline
3) Technical details
4) POC

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1) Introduction
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Foxit Reader is a multilingual freemium PDF tool that can create, view, edit, digitally sign, and print PDF files.[3] Early versions of Foxit Reader were notable for startup performance and small file size.[citation needed] Foxit has been compared favorably toAdobe Reader.[4][5][6] The Windows version allows annotating and saving unfinished PDF forms, FDF import/export, converting to text, highlighting and drawing.

(http://en.wikipedia.org/wiki/Foxit_Reader)

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2) Report Timeline
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2015-02-17: Francis Provencher from Protek Research Lab’s found the issue;
2015-02-21: Foxit Security Response Team confirmed the issue;
2015-02-21: Foxit fixed the issue;
2015-03-09: Foxit released fixed version of Foxit Reader 7.1/Foxit Enterprise Reader 7.1/Foxit PhantomPDF7.1.

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3) Technical details
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An error when handling LZWMinimumCodeSize can be exploited to cause memory corruption via a specially crafted GIF file.

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4) POC

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http://protekresearchlab.com/exploits/PRL-2015-01.gif
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/36334.gif


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