80 lines
2.6 KiB
XML
80 lines
2.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200511-23">
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<title>chmlib, KchmViewer: Stack-based buffer overflow</title>
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<synopsis>
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chmlib and KchmViewer contain a buffer overflow vulnerability which may
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lead to the execution of arbitrary code.
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</synopsis>
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<product type="ebuild">chmlib kchmviewer</product>
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<announced>November 28, 2005</announced>
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<revised>May 28, 2009: 03</revised>
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<bug>110557</bug>
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<access>remote</access>
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<affected>
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<package name="dev-libs/chmlib" auto="yes" arch="*">
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<unaffected range="ge">0.37.4</unaffected>
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<vulnerable range="lt">0.37.4</vulnerable>
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</package>
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<package name="app-text/kchmviewer" auto="yes" arch="*">
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<unaffected range="ge">1.1</unaffected>
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<vulnerable range="lt">1.1</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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chmlib is a library for dealing with Microsoft ITSS and CHM format
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files. KchmViewer is a CHM viewer that includes its own copy of the
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chmlib library.
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</p>
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</background>
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<description>
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<p>
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Sven Tantau reported about a buffer overflow vulnerability in
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chmlib. The function "_chm_decompress_block()" does not properly
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perform boundary checking, resulting in a stack-based 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 convincing a user to open a specially crafted ITSS or CHM file,
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using KchmViewer or a program makes use of chmlib, a remote attacker
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could execute arbitrary code with the privileges of the user running
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the software.
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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 chmlib 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 ">=dev-libs/chmlib-0.37.4"</code>
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<p>
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All KchmViewer 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 ">=app-text/kchmviewer-1.1"</code>
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</resolution>
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<references>
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<uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3318">CVE-2005-3318</uri>
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</references>
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<metadata tag="requester" timestamp="Fri, 25 Nov 2005 10:03:15 +0000">
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koon
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</metadata>
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<metadata tag="submitter" timestamp="Sat, 26 Nov 2005 02:10:11 +0000">
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adir
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</metadata>
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<metadata tag="bugReady" timestamp="Sun, 27 Nov 2005 20:16:26 +0000">
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adir
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</metadata>
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</glsa>
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