73 lines
2.5 KiB
XML
73 lines
2.5 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="200711-08">
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<title>libpng: Multiple Denials of Service</title>
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<synopsis>
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Several vulnerabilities in libpng may allow a remote attacker to crash
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applications that handle untrusted images.
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</synopsis>
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<product type="ebuild">libpng</product>
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<announced>November 07, 2007</announced>
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<revised>November 07, 2007: 01</revised>
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<bug>195261</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">1.2.21-r3</unaffected>
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<vulnerable range="lt">1.2.21-r3</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 a free ANSI C library used to process and manipulate PNG
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images.
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</p>
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</background>
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<description>
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<p>
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An off-by-one error when handling ICC profile chunks in the
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png_set_iCCP() function was discovered (CVE-2007-5266). George Cook and
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Jeff Phillips reported several errors in pngrtran.c, the use of logical
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instead of a bitwise functions and incorrect comparisons
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(CVE-2007-5268). Tavis Ormandy reported out-of-bounds read errors in
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several PNG chunk handling functions (CVE-2007-5269).
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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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A remote attacker could craft an image that when processed or viewed by
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an application using libpng would cause the application to terminate
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abnormally.
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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-1.2.21-r3"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5266">CVE-2007-5266</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5268">CVE-2007-5268</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5269">CVE-2007-5269</uri>
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</references>
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<metadata tag="requester" timestamp="Sat, 20 Oct 2007 09:57:33 +0000">
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p-y
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</metadata>
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<metadata tag="bugReady" timestamp="Sat, 20 Oct 2007 09:57:41 +0000">
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p-y
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</metadata>
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<metadata tag="submitter" timestamp="Fri, 26 Oct 2007 00:26:03 +0000">
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rbu
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</metadata>
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</glsa>
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