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CVE-2008-1949 - Uncordial Alert

Description

The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages aka GNUTLS-SA-2008-1-2.

Reference

http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00051.html http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00055.html http://www.openwall.com/lists/oss-security/2008/05/20/1 http://www.openwall.com/lists/oss-security/2008/05/20/2 http://www.openwall.com/lists/oss-security/2008/05/20/3 http://www.cert.fi/haavoittuvuudet/advisory-gnutls.html http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=bc8102405fda11ea00ca3b42acc4f4bce9d6e97b http://www.redhat.com/support/errata/RHSA-2008-0489.html http://www.redhat.com/support/errata/RHSA-2008-0492.html http://www.securityfocus.com/bid/29292 http://sourceforge.net/project/shownotes.php?release_id=600646&group_id=21558 http://www.debian.org/security/2008/dsa-1581 https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00487.html https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00590.html https://www.redhat.com/archives/fedora-package-announce/2008-May/msg00615.html http://security.gentoo.org/glsa/glsa-200805-20.xml http://www.mandriva.com/security/advisories?name=MDVSA-2008:106 http://www.ubuntu.com/usn/usn-613-1 http://www.securitytracker.com/id?1020058 http://secunia.com/advisories/30331 http://secunia.com/advisories/30338 http://secunia.com/advisories/30302 http://secunia.com/advisories/30317 http://secunia.com/advisories/30324 http://secunia.com/advisories/30287 http://secunia.com/advisories/30330 http://www.kb.cert.org/vuls/id/252626 http://secunia.com/advisories/31939 http://lists.opensuse.org/opensuse-security-announce/2008-09/msg00003.html http://securityreason.com/securityalert/3902 http://secunia.com/advisories/30355 http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0174 https://issues.rpath.com/browse/RPL-2552 http://www.vupen.com/english/advisories/2008/1583/references http://www.vupen.com/english/advisories/2008/1582/references https://exchange.xforce.ibmcloud.com/vulnerabilities/42530 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9519 http://www.securityfocus.com/archive/1/492464/100/0/threaded http://www.securityfocus.com/archive/1/492282/100/0/threaded