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TITLE:
FFmpeg "vmd_read_header()" Integer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA36760

VERIFY ADVISORY:
http://secunia.com/advisories/36760/

DESCRIPTION:
A vulnerability has been discovered in FFmpeg, which can be exploited
by malicious people to compromise an application using the library.

The vulnerability is caused due to an integer overflow error within
the "vmd_read_header()" function in libavformat/sierravmd.c. This can
be exploited to cause a heap-based buffer overflow via a specially
crafted VMD file.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in version 0.5. Other versions may
also be affected.

SOLUTION:
Do not process untrusted files using the library.

PROVIDED AND/OR DISCOVERED BY:
Reported via a GIT commit attempting to fix the vulnerability.

Additional information about the incomplete patch provided by Secunia
Research.

ORIGINAL ADVISORY:
http://git.ffmpeg.org/?p=ffmpeg;a=commit;h=ebbccbaa5e925c2ddb212559f82c29ef526cc17e

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