2008/09/29 #2008-013 MPlayer Real demuxer heap overflow Description: The MPlayer multimedia player suffers from a vulnerability which could result in arbitrary code execution and at the least, in unexpected process termination. Three integer underflows located in the Real demuxer code can be used to exploit a heap overflow, a specific video file can be crafted in order to make the stream_read function reading or writing arbitrary amounts of memory. The following patch fixes the issue: http://www.ocert.org/patches/2008-013/mplayer_demux_real.patch Affected version: MPlayer <= 1.0_rc2 Fixed version: MPlayer, N/A Credit: vulnerability report, patch and PoC code received from Felipe Andres Manzano <fmanzano [at] fceia [dot] unr [dot] edu [dot] ar>. CVE: CVE-2008-3827 Timeline: 2008-08-12: vulnerability report received 2008-08-24: contacted mplayer maintainers 2008-08-25: maintainer provides patch 2008-08-28: reporter indicates that the patch is incomplete and sends new PoC 2008-09-15: maintainer provides updated patch 2008-09-16: reporter confirms patch 2008-09-29: advisory release References: Links: http://www.mplayerhq.hu Permalink: http://www.ocert.org/advisories/ocert-2008-013.html -- Andrea Barisani | Founder & Project Coordinator oCERT | Open Source Computer Emergency Response Team <lcars (at) ocert (dot) org [email concealed]> http://www.ocert.org 0x864C9B9E 0A76 074A 02CD E989 CE7F AC3F DA47 578E 864C 9B9E "Pluralitas non est ponenda sine necessitate"