<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200905-04"> <title>GnuTLS: Multiple vulnerabilities</title> <synopsis> Multiple vulnerabilities in GnuTLS might result in a Denial of Service, spoofing or the generation of invalid keys. </synopsis> <product type="ebuild">gnutls</product> <announced>2009-05-24</announced> <revised count="01">2009-05-24</revised> <bug>267774</bug> <access>remote</access> <affected> <package name="net-libs/gnutls" auto="yes" arch="*"> <unaffected range="ge">2.6.6</unaffected> <vulnerable range="lt">2.6.6</vulnerable> </package> </affected> <background> <p> GnuTLS is an Open Source implementation of the TLS 1.0 and SSL 3.0 protocols. </p> </background> <description> <p> The following vulnerabilities were found in GnuTLS: </p> <ul> <li>Miroslav Kratochvil reported that lib/pk-libgcrypt.c does not properly handle corrupt DSA signatures, possibly leading to a double-free vulnerability (CVE-2009-1415).</li> <li>Simon Josefsson reported that GnuTLS generates RSA keys stored in DSA structures when creating a DSA key (CVE-2009-1416).</li> <li>Romain Francoise reported that the _gnutls_x509_verify_certificate() function in lib/x509/verify.c does not perform time checks, resulting in the "gnutls-cli" program accepting X.509 certificates with validity times in the past or future (CVE-2009-1417).</li> </ul> </description> <impact type="normal"> <p> A remote attacker could entice a user or automated system to process a specially crafted DSA certificate, possibly resulting in a Denial of Service condition. NOTE: This issue might have other unspecified impact including the execution of arbitrary code. Furthermore, a remote attacker could spoof signatures on certificates and the "gnutls-cli" application can be tricked into accepting an invalid certificate. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All GnuTLS users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.6.6"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1415">CVE-2009-1415</uri> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1416">CVE-2009-1416</uri> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1417">CVE-2009-1417</uri> </references> <metadata tag="requester" timestamp="2009-05-06T18:48:21Z"> a3li </metadata> <metadata tag="submitter" timestamp="2009-05-07T11:40:21Z"> a3li </metadata> <metadata tag="bugReady" timestamp="2009-05-24T11:17:39Z"> p-y </metadata> </glsa>