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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200901-10">
<title>GnuTLS: Certificate validation error</title>
<synopsis>
A certificate validation error in GnuTLS might allow for spoofing attacks.
</synopsis>
<product type="ebuild">gnutls</product>
<announced>2009-01-14</announced>
<revised count="01">2009-01-14</revised>
<bug>245850</bug>
<access>remote</access>
<affected>
<package name="net-libs/gnutls" auto="yes" arch="*">
<unaffected range="ge">2.4.1-r2</unaffected>
<vulnerable range="lt">2.4.1-r2</vulnerable>
</package>
</affected>
<background>
<p>
GnuTLS is an open-source implementation of TLS 1.0 and SSL 3.0.
</p>
</background>
<description>
<p>
Martin von Gagern reported that the _gnutls_x509_verify_certificate()
function in lib/x509/verify.c trusts certificate chains in which the
last certificate is an arbitrary trusted, self-signed certificate.
</p>
</description>
<impact type="normal">
<p>
A remote attacker could exploit this vulnerability and spoof arbitrary
names to conduct Man-In-The-Middle attacks and intercept sensitive
information.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All GnuTLS users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.4.1-r2"</code>
</resolution>
<references>
<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4989">CVE-2008-4989</uri>
</references>
<metadata tag="requester" timestamp="2008-11-30T19:06:26Z">
keytoaster
</metadata>
<metadata tag="submitter" timestamp="2009-01-10T23:37:58Z">
p-y
</metadata>
<metadata tag="bugReady" timestamp="2009-01-10T23:38:09Z">
p-y
</metadata>
</glsa>
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