CentOS 3 : openldap / nss_ldap (CESA-2005:751)

high Nessus Plugin ID 21852


The remote CentOS host is missing one or more security updates.


Updated openldap and nss_ldap packages that correct a potential password disclosure issue are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

OpenLDAP is an open source suite of LDAP (Lightweight Directory Access Protocol) applications and development tools.

The nss_ldap module is an extension for use with GNU libc which allows applications to, without internal modification, consult a directory service using LDAP to supplement information that would be read from local files such as /etc/passwd, /etc/group, and /etc/shadow.

A bug was found in the way OpenLDAP, nss_ldap, and pam_ldap refer LDAP servers. If a client connection is referred to a different server, it is possible that the referred connection will not be encrypted even if the client has 'ssl start_tls' in its ldap.conf file. The Common Vulnerabilities and Exposures project has assigned the name CVE-2005-2069 to this issue.

A bug was also found in the way certain OpenLDAP authentication schemes store hashed passwords. A remote attacker could re-use a hashed password to gain access to unauthorized resources. The Common Vulnerabilities and Exposures project has assigned the name CVE-2004-0823 to this issue.

All users of OpenLDAP and nss_ldap are advised to upgrade to these updated packages, which contain backported fixes that resolve these issues.


Update the affected nss_ldap and / or openldap packages.

See Also




Plugin Details

Severity: High

ID: 21852

File Name: centos_RHSA-2005-751.nasl

Version: 1.17

Type: local

Agent: unix

Published: 7/3/2006

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure

Risk Information


Risk Factor: Medium

Score: 5.5


Risk Factor: High

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:centos:centos:nss_ldap, p-cpe:/a:centos:centos:openldap, p-cpe:/a:centos:centos:openldap-clients, p-cpe:/a:centos:centos:openldap-devel, p-cpe:/a:centos:centos:openldap-servers, cpe:/o:centos:centos:3

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list

Patch Publication Date: 10/17/2005

Vulnerability Publication Date: 9/7/2004

Reference Information

CVE: CVE-2004-0823, CVE-2005-2069

RHSA: 2005:751