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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200906-01">
<title>libpng: Information disclosure</title>
<synopsis>
A vulnerability has been discovered in libpng that allows for information
disclosure.
</synopsis>
<product type="ebuild">libpng</product>
<announced>June 27, 2009</announced>
<revised>June 27, 2009: 01</revised>
<bug>272970</bug>
<access>remote</access>
<affected>
<package name="media-libs/libpng" auto="yes" arch="*">
<unaffected range="ge">1.2.37</unaffected>
<vulnerable range="lt">1.2.37</vulnerable>
</package>
</affected>
<background>
<p>
libpng is the official PNG reference library used to read, write and
manipulate PNG images.
</p>
</background>
<description>
<p>
Jeff Phillips discovered that libpng does not properly parse 1-bit
interlaced images with width values that are not divisible by 8, which
causes libpng to include uninitialized bits in certain rows of a PNG
file.
</p>
</description>
<impact type="low">
<p>
A remote attacker might entice a user to open a specially crafted PNG
file, possibly resulting in the disclosure of sensitive memory
portions.
</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 &quot;&gt;=media-libs/libpng-1.2.37&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2042">CVE-2009-2042</uri>
</references>
<metadata tag="requester" timestamp="Sun, 21 Jun 2009 18:15:41 +0000">
keytoaster
</metadata>
<metadata tag="submitter" timestamp="Sun, 21 Jun 2009 18:23:22 +0000">
keytoaster
</metadata>
<metadata tag="bugReady" timestamp="Sat, 27 Jun 2009 23:12:55 +0000">
keytoaster
</metadata>
</glsa>