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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200912-01">
<title>OpenSSL: Multiple vulnerabilities</title>
<synopsis>
Multiple vulnerabilities in OpenSSL might allow remote attackers to conduct
multiple attacks, including the injection of arbitrary data into encrypted
byte streams.
</synopsis>
<product type="ebuild">openssl</product>
<announced>December 01, 2009</announced>
<revised>December 02, 2009: 02</revised>
<bug>270305</bug>
<bug>280591</bug>
<bug>292022</bug>
<access>remote</access>
<affected>
<package name="dev-libs/openssl" auto="yes" arch="*">
<unaffected range="ge">0.9.8l-r2</unaffected>
<vulnerable range="lt">0.9.8l-r2</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>
Multiple vulnerabilities have been reported in OpenSSL:
</p>
<ul>
<li>Marsh Ray of PhoneFactor and Martin Rex of SAP independently
reported that the TLS protocol does not properly handle session
renegotiation requests (CVE-2009-3555).</li>
<li>The MD2 hash algorithm is no longer considered to be
cryptographically strong, as demonstrated by Dan Kaminsky. Certificates
using this algorithm are no longer accepted (CVE-2009-2409).</li>
<li>Daniel Mentz and Robin Seggelmann reported the following
vulnerabilities related to DTLS: A use-after-free flaw (CVE-2009-1379)
and a NULL pointer dereference (CVE-2009-1387) in the
dtls1_retrieve_buffered_fragment() function in src/d1_both.c, multiple
memory leaks in the dtls1_process_out_of_seq_message() function in
src/d1_both.c (CVE-2009-1378), and a processing error related to a
large amount of DTLS records with a future epoch in the
dtls1_buffer_record() function in ssl/d1_pkt.c
(CVE-2009-1377).</li>
</ul>
</description>
<impact type="normal">
<p>
A remote unauthenticated attacker, acting as a Man in the Middle, could
inject arbitrary plain text into a TLS session, possibly leading to the
ability to send requests as if authenticated as the victim. A remote
attacker could furthermore send specially crafted DTLS packages to a
service using OpenSSL for DTLS support, possibly resulting in a Denial
of Service. Also, a remote attacker might be able to create rogue
certificates, facilitated by a MD2 collision. NOTE: The amount of
computation needed for this attack is still very large.
</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 &quot;&gt;=dev-libs/openssl-0.9.8l-r2&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1377">CVE-2009-1377</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1378">CVE-2009-1378</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1379">CVE-2009-1379</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1387">CVE-2009-1387</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2409">CVE-2009-2409</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555">CVE-2009-3555</uri>
</references>
<metadata tag="requester" timestamp="Mon, 23 Nov 2009 21:29:47 +0000">
a3li
</metadata>
<metadata tag="submitter" timestamp="Mon, 30 Nov 2009 13:42:39 +0000">
a3li
</metadata>
<metadata tag="bugReady" timestamp="Tue, 01 Dec 2009 21:28:40 +0000">
a3li
</metadata>
</glsa>