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[SA33196] DivX Web Player Stream Format Chunk Buffer Overflow

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Apr 15 2009 - 19:10:04 CDT

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TITLE:
DivX Web Player Stream Format Chunk Buffer Overflow

SECUNIA ADVISORY ID:
SA33196

VERIFY ADVISORY:
http://secunia.com/advisories/33196/

DESCRIPTION:
Secunia Research has discovered a vulnerability in DivX Web Player,
which can be exploited by malicious people to compromise a user's
system.

The vulnerability is caused due to a signedness error in the
processing of "STRF" (Stream Format) chunks. This can be exploited to
cause a heap-based buffer overflow via a specially crafted DivX file.

Successful exploitation may allow execution of arbitrary code by
tricking a user into visiting a malicious website.

The vulnerability is confirmed in version 1.4.2.7. Other versions may
also be affected.

SOLUTION:
Update to version 1.4.3.4, included in an updated DivX bundle.
http://www.divx.com/downloads/divx

PROVIDED AND/OR DISCOVERED BY:
Alin Rad Pop, Secunia Research

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2008-57/

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