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[ GLSA 200612-19 ] pam_ldap: Authentication bypass vulnerability
From: Raphael Marichez <falco () gentoo org>
Date: Wed, 20 Dec 2006 21:18:49 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200612-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: pam_ldap: Authentication bypass vulnerability Date: December 20, 2006 Bugs: #153916 ID: 200612-19 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== pam_ldap contains a vulnerability that may allow a remote user with a locked account to gain unauthorized 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 < 183 >= 183 Description =========== Steve Rigler discovered that pam_ldap does not correctly handle "PasswordPolicyResponse" control responses from an LDAP directory. This causes the pam_authenticate() function to always succeed, even if the previous authentication failed. Impact ====== A locked user may exploit this vulnerability to bypass the LDAP authentication mechanism, possibly gaining unauthorized access to the system. 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-183" References ========== [ 1 ] CVE-2006-5170 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5170 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200612-19.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
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- [ GLSA 200612-19 ] pam_ldap: Authentication bypass vulnerability Raphael Marichez (Dec 20)