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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200611-09">
<title>libpng: Denial of Service</title>
<synopsis>
A vulnerability in libpng may allow a remote attacker to crash applications
that handle untrusted images.
</synopsis>
<product type="ebuild">libpng</product>
<announced>2006-11-17</announced>
<revised count="01">2006-11-17</revised>
<bug>154380</bug>
<access>remote</access>
<affected>
<package name="media-libs/libpng" auto="yes" arch="*">
<unaffected range="ge">1.2.13</unaffected>
<vulnerable range="lt">1.2.13</vulnerable>
</package>
</affected>
<background>
<p>
libpng is a free ANSI C library used to process and manipulate PNG
images.
</p>
</background>
<description>
<p>
Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that a
vulnerability exists in the sPLT chunk handling code of libpng, a large
sPLT chunk may cause an application to attempt to read out of bounds.
</p>
</description>
<impact type="normal">
<p>
A remote attacker could craft an image that when processed or viewed by
an application using libpng causes the application to terminate
abnormally.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All libpng users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/libpng-1.2.13"</code>
</resolution>
<references>
<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5793">CVE-2006-5793</uri>
</references>
<metadata tag="submitter" timestamp="2006-11-10T11:17:04Z">
taviso
</metadata>
<metadata tag="bugReady" timestamp="2006-11-16T15:07:26Z">
vorlon
</metadata>
</glsa>
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