drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in libjpeg-turbo
Name: |
Ausführen beliebiger Kommandos in libjpeg-turbo |
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ID: |
201612-55 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
So, 1. Januar 2017, 12:55 |
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Referenzen: |
https://github.com/libjpeg-turbo/libjpeg-turbo/commit/0463f7c9aad060fcd56e98d025ce16185279e2bc
https://wiki.mozilla.org/images/7/77/Libjpeg-turbo-report.pdf |
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Applikationen: |
libjpeg-turbo |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --vLVPhg94vG5Dd3jcIrPMfc5UblWiCNCAj Content-Type: multipart/mixed; boundary="IlVxeAD1N5xmUTBP2ukoC0lkxQTxR3OfV"; protected-headers="v1" From: Thomas Deutschmann <whissi@gentoo.org> To: gentoo-announce@lists.gentoo.org Message-ID: <40534b2d-6dde-dbf9-cf6d-a0a202c0900f@gentoo.org> Subject: [ GLSA 201612-55 ] libjpeg-turbo: User-assisted execution of arbitrary code
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201612-55 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: libjpeg-turbo: User-assisted execution of arbitrary code Date: December 31, 2016 Bugs: #585782 ID: 201612-55
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Synopsis ========
An out-of-bounds read in libjpeg-turbo might allow remote attackers to execute arbitrary code.
Background ==========
libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/libjpeg-turbo < 1.5.0 >= 1.5.0
Description ===========
The accelerated Huffman decoder was previously invoked if there were 128 bytes in the input buffer. However, it is possible to construct a JPEG image with Huffman blocks > 430 bytes in length. This release simply increases the minimum buffer size for the accelerated Huffman decoder to 512 bytes, which should accommodate any possible input.
Impact ======
A remote attacker could coerce the victim to run a specially crafted image file resulting in the execution of arbitrary code.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All libjpeg-turbo users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=media-libs/libjpeg-turbo-1.5.0"
References ==========
[ 1 ] LJT-01-005 https://wiki.mozilla.org/images/7/77/Libjpeg-turbo-report.pdf [ 2 ] Prevent overread when decoding malformed JPEG
https://github.com/libjpeg-turbo/libjpeg-turbo/commit/0463f7c9aad060fcd56e98d025ce16185279e2bc
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-55
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 https://bugs.gentoo.org.
License =======
Copyright 2016 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/2.5
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