Summary : Buffer overflow in PNG decoder Date : October 2012 Affected versions : VLC media player 2.0.3 and earlier ID : VideoLAN-SA-1203 CVE reference : CVE-2012-5470
When parsing an invalid PNG image file, a buffer overflow might occur.
If successful, a malicious third party could trigger an invalid memory access, leading to a crash of the process of the VLC media player.
Because the overflow occurs while reading a buffer, rather than writing, it is believed that this issue cannot lead to arbitrary code execution.
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 PNG decoder plugin (
can be removed manually from the VLC plugin installation directory.
This will prevent decoding of PNG images.
VLC media player 2.0.4 addresses this issue. Patches for older versions are available from the official VLC source code repository 2.0 and 1.1 branches.