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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200408-03">
<title>libpng: Numerous vulnerabilities</title>
<synopsis>
libpng contains numerous vulnerabilities potentially allowing an attacker
to perform a Denial of Service attack or even execute arbitrary code.
</synopsis>
<product type="ebuild">libpng</product>
<announced>August 05, 2004</announced>
<revised>August 05, 2004: 01</revised>
<bug>59424</bug>
<access>remote</access>
<affected>
<package name="media-libs/libpng" auto="yes" arch="*">
<unaffected range="ge">1.2.5-r8</unaffected>
<vulnerable range="le">1.2.5-r7</vulnerable>
</package>
</affected>
<background>
<p>
libpng is a standard library used to process PNG (Portable Network
Graphics) images. It is used by several other programs, including web
browsers and potentially server processes.
</p>
</background>
<description>
<p>
libpng contains numerous vulnerabilities including null pointer dereference
errors and boundary errors in various functions.
</p>
</description>
<impact type="normal">
<p>
An attacker could exploit these vulnerabilities to cause programs linked
against the library to crash or execute arbitrary code with the permissions
of the user running the vulnerable program, which could be the root user.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version.
</p>
</workaround>
<resolution>
<p>
All libpng users should upgrade to the latest stable version:
</p>
<code>
# emerge sync
# emerge -pv ">=media-libs/libpng-1.2.5-r8"
# emerge ">=media-libs/libpng-1.2.5-r8"</code>
<p>
You should also run revdep-rebuild to rebuild any packages that depend on
older versions of libpng :
</p>
<code>
# revdep-rebuild</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0597">CAN-2004-0597</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0598">CAN-2004-0598</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0599">CAN-2004-0599</uri>
</references>
<metadata tag="submitter" timestamp="Thu, 5 Aug 2004 09:45:46 +0000">
jaervosz
</metadata>
</glsa>