=====================================================================
                                   CERT-Renater

                        Note d'Information No. 2008/VULN448
_____________________________________________________________________

DATE                      : 21/10/2008

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Systems running VLC media player versions
                                         0.9.4 down to 0.9.0.

======================================================================
http://www.videolan.org/security/sa0809.html
______________________________________________________________________

Security Advisory 0809

Summary           : Buffer overflow in VLC TiVo demuxer
Date              : October 2008
Affected versions : VLC media player 0.9.4 down to 0.9.0
ID                : VideoLAN-SA-0809
CVE reference     : CVE-2008-????

Details

When parsing the header of an invalid TY file, a stack-based buffer
overflow might occur.


Impact

If successful, a malicious third party could trigger execution of
arbitrary code within the context of the VLC 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 TY demux plugin (libty_plugin.*) can be removed
manually from the VLC plugin installation directory. This will prevent
opening of TiVo files.


Solution

VLC media player 0.9.5 addresseswill address this issue. Patches for
older versions are available from the official VLC source code
repository 0.9-bugfix branch.


Credits

This vulnerability was reported by Tobias Klein.


References

The VideoLAN project
    http://www.videolan.org/
VLC official GIT repository
    http://git.videolan.org/?p=vlc.git
Tobias Klein
    http://www.trapkit.de/advisories/

History

18 October 2008
    Vendor notification.
    Patch for VLC development version and 0.9-bugfix tree.
    Initial security advisory.
?? October 2008
    VLC media player 0.9.5 released.

Rémi Denis-Courmont,
on behalf of the VideoLAN project


======================================================================

          =========================================================
          Les serveurs de référence du CERT-Renater
          http://www.urec.fr/securite
          http://www.cru.fr/securite
          http://www.renater.fr
          =========================================================
          + CERT-RENATER          | tel : 01-53-94-20-44          +
          + 151 bd de l'Hopital   | fax : 01-53-94-20-41          +
          + 75013 Paris           | email: certsvp@renater.fr     +
          =========================================================