VideoLAN association
A project and a non-profit organization, composed of volunteers, developing and promoting free, open-source multimedia solutions.

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-2008-4654, CVE-2008-4686


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


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.


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.


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


This vulnerability was reported by Tobias Klein.


The VideoLAN project
VLC official GIT repository
Tobias Klein


18 October 2008
Vendor notification.
Patch for VLC development version and 0.9-bugfix tree.
Initial security advisory.
24 October 2008
VLC media player 0.9.5 released.
Rémi Denis-Courmont,
on behalf of the VideoLAN project