XnView FlashPix Image Processing - Heap Overflow

Application:   XnView FlashPix Image Processing Heap Overflow

Platforms:   Windows 

Secunia:   SA47388  

{PRL}:   2012-06

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) The Code


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1) Introduction
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XnView is a cross-platform image viewer used for viewing, converting, organising and editing graphical & video files.
It is free of charge for private, educational and non-profit organisations. For commercial use and distribution,
the user must register the program. It is popular with users as it provides features normally found only
in commercial image viewers.

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

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2) Report Timeline
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2012-01-05  Vulnerability reported to Secunia
2012-03-12  Vendor disclose patch


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3) Technical details
============================
The vulnerability is caused due to an error when processing FPX images, which can be exploited to cause
an heap-based buffer overflow by tricking a user into opening a specially crafted image file.

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4) The Code
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Here: http://www.protekresearchlab.com/exploits/PRL-2012-06.fpx
Mirror: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/18586.pfx (PRL-2012-06.fpx)