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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200904-09">
<title>MIT Kerberos 5: Multiple vulnerabilities</title>
<synopsis>
Multiple vulnerabilities in MIT Kerberos 5 might allow remote
unauthenticated users to execute arbitrary code with root privileges.
</synopsis>
<product type="ebuild">mit-krb5</product>
<announced>April 08, 2009</announced>
<revised>April 08, 2009: 01</revised>
<bug>262736</bug>
<bug>263398</bug>
<access>remote</access>
<affected>
<package name="app-crypt/mit-krb5" auto="yes" arch="*">
<unaffected range="ge">1.6.3-r6</unaffected>
<vulnerable range="lt">1.6.3-r6</vulnerable>
</package>
</affected>
<background>
<p>
MIT Kerberos 5 is a suite of applications that implement the Kerberos
network protocol. kadmind is the MIT Kerberos 5 administration daemon,
KDC is the Key Distribution Center.
</p>
</background>
<description>
<p>
Multiple vulnerabilities have been reported in MIT Kerberos 5:
</p>
<ul>
<li>A free() call on an uninitialized pointer in the ASN.1 decoder
when decoding an invalid encoding (CVE-2009-0846).</li>
<li>A buffer
overread in the SPNEGO GSS-API application, reported by Apple Product
Security (CVE-2009-0844).</li>
<li>A NULL pointer dereference in the
SPNEGO GSS-API application, reported by Richard Evans
(CVE-2009-0845).</li>
<li>An incorrect length check inside an ASN.1
decoder leading to spurious malloc() failures (CVE-2009-0847).</li>
</ul>
</description>
<impact type="high">
<p>
A remote unauthenticated attacker could exploit the first vulnerability
to cause a Denial of Service or, in unlikely circumstances, execute
arbitrary code on the host running krb5kdc or kadmind with root
privileges and compromise the Kerberos key database. Exploitation of
the other vulnerabilities might lead to a Denial of Service in kadmind,
krb5kdc, or other daemons performing authorization against Kerberos
that utilize GSS-API or an information disclosure.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All MIT Kerberos 5 users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-crypt/mit-krb5-1.6.3-r6&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0844">CVE-2009-0844</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0845">CVE-2009-0845</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0846">CVE-2009-0846</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0847">CVE-2009-0847</uri>
</references>
<metadata tag="submitter" timestamp="Wed, 08 Apr 2009 01:07:26 +0000">
rbu
</metadata>
<metadata tag="bugReady" timestamp="Wed, 08 Apr 2009 18:19:31 +0000">
p-y
</metadata>
</glsa>