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81 lines
2.6 KiB
81 lines
2.6 KiB
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200805-20">
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<title>GnuTLS: Execution of arbitrary code</title>
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<synopsis>
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Multiple vulnerabilities might allow for the execution of arbitrary code in
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daemons using GnuTLS.
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</synopsis>
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<product type="ebuild">gnutls</product>
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<announced>May 21, 2008</announced>
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<revised>May 21, 2008: 01</revised>
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<bug>222823</bug>
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<access>remote</access>
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<affected>
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<package name="net-libs/gnutls" auto="yes" arch="*">
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<unaffected range="ge">2.2.5</unaffected>
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<vulnerable range="lt">2.2.5</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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GnuTLS is an implementation of Secure Sockets Layer (SSL) 3.0 and
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Transport Layer Security (TLS) 1.0, 1.1 and 1.2.
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</p>
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</background>
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<description>
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<p>
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Ossi Herrala and Jukka Taimisto of Codenomicon reported three
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vulnerabilities in libgnutls of GnuTLS:
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</p>
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<ul>
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<li>
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"Client Hello" messages containing an invalid server name can lead to a
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buffer overflow when evaluating "Security Parameters" (CVE-2008-1948).
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</li>
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<li>
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Multiple "Client Hello" messages can lead to a NULL pointer dereference
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(CVE-2008-1949).
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</li>
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<li>
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A TLS handshake including an encrypted "Client Hello" message and an
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invalid record length could lead to a buffer overread (CVE-2008-1950).
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</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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Unauthenticated remote attackers could exploit these vulnerabilities to
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cause Denial of Service conditions in daemons using GnuTLS. The first
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vulnerability (CVE-2008-1948) might allow for the execution of
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arbitrary code with the privileges of the daemon handling incoming TLS
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connections.
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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 GnuTLS 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 ">=net-libs/gnutls-2.2.5"</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-2008-1948">CVE-2008-1948</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1949">CVE-2008-1949</uri>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1950">CVE-2008-1950</uri>
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</references>
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<metadata tag="submitter" timestamp="Tue, 20 May 2008 16:44:10 +0000">
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rbu
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</metadata>
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<metadata tag="bugReady" timestamp="Wed, 21 May 2008 16:32:55 +0000">
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rbu
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</metadata>
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</glsa>
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