From condordes@gentoo.org Thu Apr 1 08:11:55 2004 From: Joshua J. Berry To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, alerts@linuxsecurity.com Date: Wed, 31 Mar 2004 03:19:45 -0800 Subject: [ GLSA 200403-12 ] OpenLDAP DoS Vulnerability -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200403-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: OpenLDAP DoS Vulnerability Date: March 31, 2004 Bugs: #26728 ID: 200403-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A failed password operation can cause the OpenLDAP slapd server, if it is using the back-ldbm backend, to free memory that was never allocated. Background ========== OpenLDAP is a suite of LDAP-related application and development tools. It includes slapd (the standalone LDAP server), slurpd (the standalone LDAP replication server), and various LDAP libraries, utilities and example clients. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- net-nds/openldap <= 2.1.12 >= 2.1.13 Description =========== A password extended operation (password EXOP) which fails will cause the slapd server to free() an uninitialized pointer, possibly resulting in a segfault. This only affects servers using the back-ldbm backend. Such a crash is not guaranteed with every failed operation, however, it is possible. Impact ====== An attacker (or indeed, a normal user) may crash the OpenLDAP server, creating a Denial of Service condition. Workaround ========== A workaround is not currently known for this issue. All users are advised to upgrade to the latest version of the affected package. Resolution ========== OpenLDAP users should upgrade to version 2.1.13 or later: # emerge sync # emerge -pv ">=net-nds/openldap-2.1.13" # emerge ">=net-nds/openldap-2.1.13" References ========== [ 1 ] http://www.openldap.org/its/index.cgi?findid=2390 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFAaqlSaIxeYlQMsxsRAnHfAJ4rCNT2xaNZgeOGForGj7/LiPcOOwCfZ93n a8lahYw+HrEJt/jgTrn0JFM= =5+Yj -----END PGP SIGNATURE-----