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                                    CERT-Renater

                         Note d'Information No. 2011/VULN307
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DATE                      : 12/04/2011

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running VLC media player version 1.x.x prior to 1.1.9.

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http://www.videolan.org/security/sa1103.html
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Security Advisory 1103

Summary           : Heap corruption in MP4 demultiplexer
Date              : April 2011
Affected versions : VLC media player 1.1.8 down to 1.0.0
ID                : VideoLAN-SA-1103
CVE reference     : Unassigned

Details

When parsing some MP4 (MPEG-4 Part 14) files, insufficient buffer size
might lead to corruption of the heap.


Impact

If successful, it is unknown whether a malicious third party might be able
to trigger execution of arbitrary code. Successful exploitation of this bug
can crash the process of the media player.


Threat mitigation

Exploitation of this issue requires the user to explicitly open an MP4 file
with some specific content.


Workarounds

The user should refrain from opening files from untrusted third parties or
accessing untrusted remote sites (or disable the VLC browser plugins), until
the patch is applied.

Alternatively, the MP4 decoder plugin (libmp4_plugin.*) can be removed manually from the VLC plugin 
installation directory.


Solution

VLC media player 1.1.9 will address this issue. Patches for older versions
are available from the official VLC source code repositories.


Credits

This vulnerability was reported by Aliz Hammond.


References

The VideoLAN project
     http://www.videolan.org/
VLC official GIT repository
     http://git.videolan.org/?p=vlc.git;a=commit;h=5637ca8141bf39f263ecdb62035d2cb45c740821

History

7 April 2011
     Vendor notified
9 April 2011
     Patches published
     Security advisory published
TBD
     CVE ID reserved
     VLC media player 1.1.9 released

Rémi Denis-Courmont,
on behalf of the VideoLAN project


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