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60 lines
2.3 KiB
60 lines
2.3 KiB
8 years ago
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="201612-55">
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<title>libjpeg-turbo: User-assisted execution of arbitrary code</title>
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<synopsis>An out-of-bounds read in libjpeg-turbo might allow remote attackers
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to execute arbitrary code.
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</synopsis>
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<product type="ebuild">libjpeg-turbo</product>
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<announced>December 31, 2016</announced>
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<revised>December 31, 2016: 1</revised>
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<bug>585782</bug>
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<access>remote</access>
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<affected>
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<package name="media-libs/libjpeg-turbo" auto="yes" arch="*">
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<unaffected range="ge">1.5.0</unaffected>
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<vulnerable range="lt">1.5.0</vulnerable>
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</package>
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</affected>
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<background>
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<p>libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX,
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SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and
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decompression.
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</p>
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</background>
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<description>
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<p>The accelerated Huffman decoder was previously invoked if there were 128
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bytes in the input buffer. However, it is possible to construct a JPEG
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image with Huffman blocks > 430 bytes in length. This release simply
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increases the minimum buffer size for the accelerated Huffman decoder to
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512 bytes, which should accommodate any possible input.
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</p>
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</description>
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<impact type="normal">
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<p>A remote attacker could coerce the victim to run a specially crafted
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image file resulting in the execution of arbitrary code.
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</p>
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</impact>
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<workaround>
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<p>There is no known workaround at this time.</p>
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</workaround>
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<resolution>
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<p>All libjpeg-turbo users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=media-libs/libjpeg-turbo-1.5.0"
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</code>
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</resolution>
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<references>
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<uri link="https://wiki.mozilla.org/images/7/77/Libjpeg-turbo-report.pdf">
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LJT-01-005
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</uri>
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<uri link="https://github.com/libjpeg-turbo/libjpeg-turbo/commit/0463f7c9aad060fcd56e98d025ce16185279e2bc">
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Prevent overread when decoding malformed JPEG
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</uri>
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</references>
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<metadata tag="requester" timestamp="Sun, 20 Nov 2016 06:32:59 +0000">b-man</metadata>
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<metadata tag="submitter" timestamp="Sat, 31 Dec 2016 15:38:15 +0000">b-man</metadata>
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</glsa>
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