From vorlon@gentoo.org Mon May 9 04:52:35 2005 From: Matthias Geerdsen To: gentoo-announce@lists.gentoo.org Cc: full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com Date: Mon, 9 May 2005 10:43:54 +0200 Subject: [Full-disclosure] [ GLSA 200505-04 ] GnuTLS: Denial of Service vulnerability - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200505-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: GnuTLS: Denial of Service vulnerability Date: May 09, 2005 Bugs: #90726 ID: 200505-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== The GnuTLS library is vulnerable to Denial of Service attacks. Background ========== GnuTLS is a free TLS 1.0 and SSL 3.0 implementation for the GNU project. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/gnutls < 1.2.3 >= 1.2.3 *>= 1.0.25 Description =========== A vulnerability has been discovered in the record packet parsing in the GnuTLS library. Additionally, a flaw was also found in the RSA key export functionality. Impact ====== A remote attacker could exploit this vulnerability and cause a Denial of Service to any application that utilizes the GnuTLS library. Workaround ========== There is no known workaround at this time. Resolution ========== All GnuTLS users should remove the existing installation and upgrade to the latest version: # emerge --sync # emerge --unmerge gnutls # emerge --ask --oneshot --verbose net-libs/gnutls Due to small API changes with the previous version, please do the following to ensure your applications are using the latest GnuTLS that you just emerged. # revdep-rebuild --soname-regexp libgnutls.so.1[0-1] Previously exported RSA keys can be fixed by executing the following command on the key files: # certtool -k infile outfile References ========== [ 1 ] GnuTLS Announcement http://lists.gnupg.org/pipermail/gnutls-dev/2005-April/000858.html [ 2 ] CAN-2005-1431 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1431 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200505-04.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2005 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.0 [ Part 1.2, Application/PGP-SIGNATURE 196bytes. ] [ Unable to print this part. ] [ Part 2: "Attached Text" ] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/