drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in xine-lib
Name: |
Pufferüberlauf in xine-lib |
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ID: |
200601-06 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 10. Januar 2006, 22:17 |
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Referenzen: |
http://article.gmane.org/gmane.comp.video.ffmpeg.devel/26558
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048 |
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Applikationen: |
Xine |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200601-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: xine-lib, FFmpeg: Heap-based buffer overflow Date: January 10, 2006 Bugs: #115849, #116181 ID: 200601-06
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Synopsis ========
xine-lib and FFmpeg are vulnerable to a buffer overflow that may be exploited by attackers to execute arbitrary code.
Background ==========
xine is a GPL high-performance, portable and reusable multimedia playback engine. xine-lib is xine's core engine. FFmpeg is a very fast video and audio converter and is used in xine-lib.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/xine-lib < 1.1.1-r3 >= 1.1.1-r3 2 media-video/ffmpeg < 0.4.9_p20051216 >= 0.4.9_p20051216 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
Simon Kilvington has reported a vulnerability in FFmpeg libavcodec. The flaw is due to a buffer overflow error in the "avcodec_default_get_buffer()" function. This function doesn't properly handle specially crafted PNG files as a result of a heap overflow.
Impact ======
A remote attacker could entice a user to run an FFmpeg based application on a maliciously crafted PNG file, resulting in the execution of arbitrary code with the permissions of the user running the application.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All xine-lib users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/xine-lib-1.1.1-r3"
All FFmpeg users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-video/ffmpeg-0.4.9_p20051216"
References ==========
[ 1 ] CVE-2005-4048 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4048 [ 2 ] Original advisory http://article.gmane.org/gmane.comp.video.ffmpeg.devel/26558
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200601-06.xml
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org.
License =======
Copyright 2006 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
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