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