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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200902-02">
<title>OpenSSL: Certificate validation error</title>
<synopsis>
An error in the OpenSSL certificate chain validation might allow for
spoofing attacks.
</synopsis>
<product type="ebuild">openssl</product>
<announced>2009-02-12</announced>
<revised count="01">2009-02-12</revised>
<bug>251346</bug>
<access>remote</access>
<affected>
<package name="dev-libs/openssl" auto="yes" arch="*">
<unaffected range="ge">0.9.8j</unaffected>
<vulnerable range="lt">0.9.8j</vulnerable>
</package>
</affected>
<background>
<p>
OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
purpose cryptography library.
</p>
</background>
<description>
<p>
The Google Security Team reported that several functions incorrectly
check the result after calling the EVP_VerifyFinal() function, allowing
a malformed signature to be treated as a good signature rather than as
an error. This issue affects the signature checks on DSA and ECDSA keys
used with SSL/TLS.
</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 OpenSSL users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose "&gt;=dev-libs/openssl-0.9.8j"</code>
</resolution>
<references>
<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077">CVE-2008-5077</uri>
</references>
<metadata tag="requester" timestamp="2009-01-13T17:07:15Z">
rbu
</metadata>
<metadata tag="bugReady" timestamp="2009-01-13T17:07:33Z">
rbu
</metadata>
<metadata tag="submitter" timestamp="2009-01-13T17:14:56Z">
rbu
</metadata>
</glsa>