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[ GLSA 200806-08 ] OpenSSL: Denial of Service
From: Robert Buchholz <rbu () gentoo org>
Date: Tue, 24 Jun 2008 00:48:39 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200806-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: OpenSSL: Denial of Service Date: June 23, 2008 Bugs: #223429 ID: 200806-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Two vulnerabilities might allow for a Denial of Service of daemons using OpenSSL. Background ========== OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/openssl < 0.9.8g-r2 >= 0.9.8g-r2 < 0.9.8f Description =========== Ossi Herrala and Jukka Taimisto of Codenomicon discovered two vulnerabilities: * A double free() call in the TLS server name extension (CVE-2008-0891). * The OpenSSL client code does not properly handle servers that omit the Server Key Exchange message in the TLS handshake (CVE-2008-1672). Impact ====== A remote attacker could connect to a vulnerable server, or entice a daemon to connect to a malicious server, causing a Denial of Service of the daemon in both cases. Workaround ========== There is no known workaround at this time. Resolution ========== All OpenSSL users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8g-r2" References ========== [ 1 ] CVE-2008-0891 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0891 [ 2 ] CVE-2008-1672 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1672 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200806-08.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 2008 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
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- [ GLSA 200806-08 ] OpenSSL: Denial of Service Robert Buchholz (Jun 23)