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Gentoo alert 200508-22 (pam_ldap)

From:  Sune Kloppenborg Jeppesen <jaervosz@gentoo.org>
To:  gentoo-announce@lists.gentoo.org
Subject:  [gentoo-announce] [ GLSA 200508-22 ] pam_ldap: Authentication bypass vulnerability
Date:  Wed, 31 Aug 2005 16:36:37 +0200
Cc:  bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk, security-alerts@linuxsecurity.com

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200508-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: pam_ldap: Authentication bypass vulnerability Date: August 31, 2005 Bugs: #103659 ID: 200508-22 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== pam_ldap contains a vulnerability that may allow a remote attacker to gain system access. Background ========== pam_ldap is a Pluggable Authentication Module which allows authentication against LDAP directories. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-auth/pam_ldap < 180 >= 180 Description =========== When a pam_ldap client attempts to authenticate against an LDAP server that omits the optional error value from the PasswordPolicyResponseValue, the authentication attempt will always succeed. Impact ====== A remote attacker may exploit this vulnerability to bypass the LDAP authentication mechanism, gaining access to the system possibly with elevated privileges. Workaround ========== There is no known workaround at this time. Resolution ========== All pam_ldap users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/pam_ldap-180" References ========== [ 1 ] CAN-2005-2641 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-200... [ 2 ] US-CERT VU#778916 http://www.kb.cert.org/vuls/id/778916 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-22.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


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