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81 lines
2.6 KiB
81 lines
2.6 KiB
<?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="200607-06">
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<title>libpng: Buffer overflow</title>
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<synopsis>
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A buffer overflow has been found in the libpng library that could lead to
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the execution of arbitrary code.
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</synopsis>
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<product type="ebuild">libpng</product>
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<announced>July 19, 2006</announced>
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<revised>July 19, 2006: 01</revised>
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<bug>138433</bug>
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<bug>138672</bug>
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<access>remote</access>
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<affected>
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<package name="media-libs/libpng" auto="yes" arch="*">
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<unaffected range="ge">1.2.12</unaffected>
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<vulnerable range="lt">1.2.12</vulnerable>
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</package>
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<package name="app-emulation/emul-linux-x86-baselibs" auto="yes" arch="amd64">
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<unaffected range="ge">2.5.1</unaffected>
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<vulnerable range="lt">2.5.1</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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libpng is an open, extensible image format library, with lossless
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compression.
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</p>
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</background>
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<description>
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<p>
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In pngrutil.c, the function png_decompress_chunk() allocates
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insufficient space for an error message, potentially overwriting stack
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data, leading to a buffer overflow.
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</p>
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</description>
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<impact type="normal">
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<p>
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By enticing a user to load a maliciously crafted PNG image, an attacker
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could execute arbitrary code with the rights of the user, or crash the
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application using the libpng library, such as the
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emul-linux-x86-baselibs.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All libpng users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.12"</code>
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<p>
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All AMD64 emul-linux-x86-baselibs users should also upgrade to the
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latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-emulation/emul-linux-x86-baselibs-2.5.1"</code>
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</resolution>
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<references>
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<uri link="http://heanet.dl.sourceforge.net/sourceforge/libpng/libpng-1.2.12-README.txt">libpng Changelog</uri>
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<uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3334">CVE-2006-3334</uri>
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</references>
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<metadata tag="requester" timestamp="Tue, 04 Jul 2006 14:10:20 +0000">
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falco
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</metadata>
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<metadata tag="submitter" timestamp="Tue, 04 Jul 2006 18:53:23 +0000">
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daxomatic
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 17 Jul 2006 16:54:49 +0000">
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koon
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</metadata>
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</glsa>
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