- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200611-25 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: OpenLDAP: Denial of Service vulnerability Date: November 28, 2006 Bugs: #154349 ID: 200611-25 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A flaw in OpenLDAP allows remote unauthenticated attackers to cause a Denial of Service. Background ========== OpenLDAP is a suite of LDAP-related applications and development tools. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-nds/openldap < 2.3.27-r3 >= 2.3.27-r3 *>= 2.2.28-r5 *>= 2.1.30-r8 Description =========== Evgeny Legerov has discovered that the truncation of an incoming authcid longer than 255 characters and ending with a space as the 255th character will lead to an improperly computed name length. This will trigger an assert in the libldap code. Impact ====== By sending a BIND request with a specially crafted authcid parameter to an OpenLDAP service, a remote attacker can cause the service to crash. Workaround ========== There is no known workaround at this time. Resolution ========== All OpenLDAP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "net-nds/openldap" References ========== [ 1 ] CVE-2006-5779 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5779 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200611-25.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@xxxxxxxxxx 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
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