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                                   CERT-Renater

                        Note d'Information No. 2011/VULN064
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DATE                      : 28/01/2011

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running VLC media player versions prior to 1.1.6.

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http://www.videolan.org/security/sa1101.html
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Security Advisory 1101

Summary           : Heap corruption in CDG decoder
Date              : January 2011
Affected versions : VLC media player 1.1.5 and earlier
ID                : VideoLAN-SA-1101
CVE reference     : CVE-2011-0021

Details

When parsing an invalid CDG file, insufficient boundary checks 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 a
specially crafted file.

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 CDG decoder plugin (libcdg_plugin.*) can be removed
manually from the VLC plugin installation directory.

Solution

VLC media player 1.1.6 addresses this issue. Patches for older versions
are available from the official VLC source code repositories.

Credits

This vulnerability was reported by Dan Rosenberg from VSR.
References

The VideoLAN project
    http://www.videolan.org/
VLC official GIT repository
    http://git.videolan.org/?p=vlc.git;a=commitdiff;h=6568965770f906d34d4aef83237842a5376adb55;hp=403718957b551c3c27546b7f82b2ae9ba937652f
Dan Rosenberg, VSR
    http://www.vsecurity.com/

History

7 January 2011
    Vendor notified
11 January 2011
    Patches published
20 January 2011
    CVE ID reserved
23 January 2011
    VLC media player 1.1.6 released
25 January 2011
    Security advisory published

Rémi Denis-Courmont,
on behalf of the VideoLAN project


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