From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1GSFf3-0003A2-Bi for garchives@archives.gentoo.org; Tue, 26 Sep 2006 16:19:57 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.8/8.13.6) with SMTP id k8QGGcea031885; Tue, 26 Sep 2006 16:16:38 GMT Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by robin.gentoo.org (8.13.8/8.13.6) with ESMTP id k8QFYbqs013349 for ; Tue, 26 Sep 2006 15:34:38 GMT Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 7E7026488D for ; Tue, 26 Sep 2006 15:34:37 +0000 (UTC) X-Virus-Scanned: amavisd-new at gentoo.org X-Spam-Score: -2.331 X-Spam-Level: X-Spam-Status: No, score=-2.331 required=5.5 tests=[AWL=0.268, BAYES_00=-2.599] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8x2O1qztozWS for ; Tue, 26 Sep 2006 15:34:29 +0000 (UTC) Received: from pfepc.post.tele.dk (pfepc.post.tele.dk [195.41.46.237]) by smtp.gentoo.org (Postfix) with ESMTP id 883C4647C2 for ; Tue, 26 Sep 2006 15:34:27 +0000 (UTC) Received: from dustyboots.home.coming.dk (unknown [83.88.175.88]) by pfepc.post.tele.dk (Postfix) with ESMTP id 1FA448A009A; Tue, 26 Sep 2006 17:34:20 +0200 (CEST) From: Sune Kloppenborg Jeppesen To: gentoo-announce@lists.gentoo.org Subject: [gentoo-announce] [ GLSA 200609-15 ] GnuTLS: RSA Signature Forgery Date: Tue, 26 Sep 2006 17:28:02 +0200 User-Agent: KMail/1.9.1 Cc: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk, security-alerts@linuxsecurity.com Organization: Gentoo Linux Security Team X-GPG-Key: http://home.coming.dk/skj.pub.gpg Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-announce@gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1214131.d7nWbvg1FT"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200609261728.02804.jaervosz@gentoo.org> X-Archives-Salt: df29dadc-f55a-4e09-be37-678150964f03 X-Archives-Hash: 4ad1eba9df21478d8dc8b7f4aa28b978 --nextPart1214131.d7nWbvg1FT Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200609-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: GnuTLS: RSA Signature Forgery Date: September 26, 2006 Bugs: #147682 ID: 200609-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== GnuTLS fails to handle excess data which could allow an attacker to forge a PKCS #1 v1.5 signature. Background ========== GnuTLS is an implementation of SSL 3.0 and TLS 1.0. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/gnutls < 1.4.4 >= 1.4.4 Description =========== verify.c fails to properly handle excess data in digestAlgorithm.parameters field while generating a hash when using an RSA key with exponent 3. RSA keys that use exponent 3 are commonplace. Impact ====== Remote attackers could forge PKCS #1 v1.5 signatures that are signed with an RSA key, preventing GnuTLS from correctly verifying X.509 and other certificates that use PKCS. Workaround ========== There is no known workaround at this time. Resolution ========== All GnuTLS users should update both packages: # emerge --sync # emerge --update --ask --verbose ">=net-libs/gnutls-1.4.4" References ========== [ 1 ] CVE-2006-4790 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4790 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200609-15.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 2006 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/2.5 --nextPart1214131.d7nWbvg1FT Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQBFGUcCzKC5hMHO6rkRAul6AJ9wCw9u9lV9mEPNIFx8gGQHDTiZvgCfccZg 6+VQJt1uJQj9CZXCib4UCFE= =goLn -----END PGP SIGNATURE----- --nextPart1214131.d7nWbvg1FT-- -- gentoo-announce@gentoo.org mailing list