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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200812-06">
<title>libxml2: Multiple vulnerabilities</title>
<synopsis>
Multiple vulnerabilities in libxml2 might lead to execution of arbitrary
code or Denial of Service.
</synopsis>
<product type="ebuild">libxml2</product>
<announced>December 02, 2008</announced>
<revised>December 02, 2008: 01</revised>
<bug>234099</bug>
<bug>237806</bug>
<bug>239346</bug>
<bug>245960</bug>
<access>remote</access>
<affected>
<package name="dev-libs/libxml2" auto="yes" arch="*">
<unaffected range="ge">2.7.2-r1</unaffected>
<vulnerable range="lt">2.7.2-r1</vulnerable>
</package>
</affected>
<background>
<p>
libxml2 is the XML (eXtended Markup Language) C parser and toolkit
initially developed for the Gnome project.
</p>
</background>
<description>
<p>
Multiple vulnerabilities were reported in libxml2:
</p>
<ul>
<li>
Andreas Solberg reported that libxml2 does not properly detect
recursion during entity expansion in an attribute value
(CVE-2008-3281).
</li>
<li>
A heap-based buffer overflow has been reported in the
xmlParseAttValueComplex() function in parser.c (CVE-2008-3529).
</li>
<li>
Christian Weiske reported that predefined entity definitions in
entities are not properly handled (CVE-2008-4409).
</li>
<li>
Drew Yao of Apple Product Security reported an integer overflow in the
xmlBufferResize() function that can lead to an infinite loop
(CVE-2008-4225).
</li>
<li>
Drew Yao of Apple Product Security reported an integer overflow in the
xmlSAX2Characters() function leading to a memory corruption
(CVE-2008-4226).
</li>
</ul>
</description>
<impact type="normal">
<p>
A remote attacker could entice a user or automated system to open a
specially crafted XML document with an application using libxml2,
possibly resulting in the exeution of arbitrary code or a high CPU and
memory consumption.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All libxml2 users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=dev-libs/libxml2-2.7.2-r1&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3281">CVE-2008-3281</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3529">CVE-2008-3529</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4409">CVE-2008-4409</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4225">CVE-2008-4225</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4226">CVE-2008-4226</uri>
</references>
<metadata tag="requester" timestamp="Wed, 01 Oct 2008 21:27:07 +0000">
keytoaster
</metadata>
<metadata tag="submitter" timestamp="Fri, 31 Oct 2008 00:21:31 +0000">
rbu
</metadata>
<metadata tag="bugReady" timestamp="Fri, 31 Oct 2008 00:21:45 +0000">
rbu
</metadata>
</glsa>