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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201404-03">
<title>OptiPNG: User-assisted execution of arbitrary code</title>
<synopsis>A use-after-free error in OptiPNG could result in execution of
arbitrary code or Denial of Service.
</synopsis>
<product type="ebuild">optipng</product>
<announced>April 07, 2014</announced>
<revised>April 07, 2014: 1</revised>
<bug>435340</bug>
<access>remote</access>
<affected>
<package name="media-gfx/optipng" auto="yes" arch="*">
<unaffected range="ge">0.7.3</unaffected>
<vulnerable range="lt">0.7.3</vulnerable>
</package>
</affected>
<background>
<p>OptiPNG is a PNG optimizer that recompresses image files to a smaller
size, without losing any information.
</p>
</background>
<description>
<p>A use-after-free vulnerability exists in the palette reduction
functionality of OptiPNG.
</p>
</description>
<impact type="normal">
<p>A remote attacker could entice a user to open a specially crafted image
file, possibly resulting in execution of arbitrary code with the
privileges of the process or a Denial of Service condition.
</p>
</impact>
<workaround>
<p>There is no known workaround at this time.</p>
</workaround>
<resolution>
<p>All OptiPNG users should upgrade to the latest version:</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/optipng-0.7.3"
</code>
</resolution>
<references>
<uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4432">CVE-2012-4432</uri>
</references>
<metadata tag="requester" timestamp="Sat, 22 Sep 2012 16:00:25 +0000">ackle</metadata>
<metadata tag="submitter" timestamp="Mon, 07 Apr 2014 20:09:15 +0000">ackle</metadata>
</glsa>
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