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