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[oCERT-2008-004] multiple speex implementations insufficient boundary checks
From: Andrea Barisani <lcars_at_nospam>Date: Thu Apr 17 2008 - 07:32:55 GMT
To: ocert-announce@lists.ocert.org, oss-security@lists.openwall.com, bugtraq@securityfocus.com
2008/04/17 #2008-004 multiple speex implementations insufficient boundary checks
Description:
The reference speex decoder from the Speex library performs insufficient boundary checks on a header structure read from user input, this has been reported in oCERT-2008-002 advisory.
Further investigation showed that several packages include similar code and are therefore vulnerable.
In order to prevent the usage of incorrect header processing reference code, the speex_packet_to_header() function has been modified to bound the returned mode values in Speex >= 1.2beta3.2. This change automatically fixes applications that use the Speex library dynamically.
Affected version:
gstreamer-plugins-good <= 0.10.8
SDL_sound <= 1.0.1
Speex <= 1.1.12 (speexdec)
Sweep <= 0.9.2
vorbis-tools <= 1.2.0
VLC Media Player <= 0.8.6f
xine-lib <= 1.1.11.1
XMMS speex plugin
Fixed version:
gstreamer-plugins-good, >= 0.10.8 (patched in CVS)
SDL_sound, patched in CVS
Speex >= 1.2beta3.2 (patched in CVS)
Sweep >= 0.9.3
vorbis-tools, patched in CVS
VLC Media Player, N/A
xine-lib >= 1.1.12
XMMS speex plugin, N/A
Credit: see oCERT-2008-002, additionally we would like to thank Tomas Hoger from the Red Hat Security Response Team for his help in investigating the issue.
CVE: CVE-2008-1686 Timeline: 2008-04-10: investigation of oCERT-2008-002 leads to discovery of more affected packages 2008-04-10: Speex header processing code fixed in CVS 2008-04-11: contacted upstream maintainers and affected vendors 2008-04-11: gstreamer-plugins-good patched in CVS 2008-04-11: sweep 0.9.3 released 2008-04-11: SDL_sound patched in CVS 2008-04-14: vorbis-tools patched in CVS 2008-04-14: xine-lib 1.1.12 released 2008-04-17: advisory release
References: http://www.ocert.org/advisories/ocert-2008-2.html http://trac.xiph.org/changeset/14701 http://webcvs.freedesktop.org/gstreamer/gst-plugins-good/ext/speex/gstspeexdec.c?r1=1.40&r2=1.41 http://trac.metadecks.org/changeset/554 http://svn.icculus.org/SDL_sound?view=rev&revision=537 http://svn.icculus.org/SDL_sound?view=rev&revision=538 http://trac.xiph.org/changeset/14728 http://hg.debian.org/hg/xine-lib/xine-lib?cmd=changeset;node=66e1654718fb;style=gitweb
Links: http://gstreamer.freedesktop.org/modules/gst-plugins-good.html http://icculus.org/SDL_sound http://www.speex.org http://www.metadecks.org/software/sweep/ http://xiph.org http://www.videolan.org/vlc http://xinehq.de
Permalink:
http://www.ocert.org/advisories/ocert-2008-004.html
--
Andrea Barisani | Founder & Project Coordinator
oCERT | Open Source Computer Emergency Response Team
<lcars_at_ocert.org> http://www.ocert.org
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