full-disclosure - [FD] Divx plugin suite heap-based buffer overflow

Open Source and information security mailing list archives

Date: Sat, 26 Apr 2014 16:59:18 +0000
From: Andres Gomez Ramirez <andres.gomez@...n.ch>
To: "fulldisclosure@...lists.org" <fulldisclosure@...lists.org>
Subject: [FD] Divx plugin suite heap-based buffer overflow

Introduction:

DirectShowDemuxFilter as part of Divx plugin suite is vulnerable to heap-based buffer overflow,
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 AVI file.
Successful exploitation may allow execution of arbitrary code by tricking a user into visiting a
malicious website.

DirectShowDemuxFilter is used by DivX Web Player, Divx Player and any application using
Divx plugins like Windows Media Player (When Divx is installed).

References:
http://kuronosec.blogspot.de/2014/04/divx-plugin-suite-heap-based-buffer.html

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