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Vigil@nce: VLC, integer overflow of RealMedia

January 2011 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/

SYNTHESIS OF THE VULNERABILITY

An attacker can invite the victim to open a malicious RealMedia
file with VLC, in order to execute code on his computer.

 Severity: 2/4
 Creation date: 03/01/2011

IMPACTED PRODUCTS

 Unix - plateform

DESCRIPTION OF THE VULNERABILITY

The VideoLAN VLC program displays multimedia documents.

The libreal_plugin plugin opens documents in the RealMedia (.rm)
format.

The DemuxAudioMethod1() function of the modules/demux/real.c file
does not check a value from the RealMedia header, and uses it as a
counter which overflows.

An attacker can therefore invite the victim to open a malicious
RealMedia file with VLC, in order to execute code on his computer.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/VLC-integer-overflow-of-RealMedia-10244


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