Joined: 13 Jun 2003
Location: Dresden, Germany
|Posted: Wed Mar 31, 2004 11:06 am Post subject: [ GLSA 200403-12 ] OpenLDAP DoS Vulnerability
|Gentoo Linux Security Advisory
Title: OpenLDAP DoS Vulnerability (GLSA 200403-12)
Date: March 31, 2004
Updated: May 22, 2006
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.
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.
Vulnerable: <= 2.1.12
Unaffected: >= 2.1.13
Architectures: All supported architectures
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.
An attacker (or indeed, a normal user) may crash the OpenLDAP server, creating a Denial of Service condition.
A workaround is not currently known for this issue. All users are advised to upgrade to the latest version of the affected package.
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"
OpenLDAP ITS Bug and Patch
Last edited by GLSA on Tue May 23, 2006 4:16 am; edited 2 times in total