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RHEL 6 : openldap (RHSA-2011:0347)

medium Nessus Plugin ID 52628

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated openldap packages that fix three security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

A flaw was found in the way OpenLDAP handled authentication failures being passed from an OpenLDAP slave to the master. If OpenLDAP was configured with a chain overlay and it forwarded authentication failures, OpenLDAP would bind to the directory as an anonymous user and return success, rather than return failure on the authenticated bind. This could allow a user on a system that uses LDAP for authentication to log into a directory-based account without knowing the password. (CVE-2011-1024)

It was found that the OpenLDAP back-ndb back end allowed successful authentication to the root distinguished name (DN) when any string was provided as a password. A remote user could use this flaw to access an OpenLDAP directory if they knew the value of the root DN. Note: This issue only affected OpenLDAP installations using the NDB back-end, which is only available for Red Hat Enterprise Linux 6 via third-party software. (CVE-2011-1025)

A flaw was found in the way OpenLDAP handled modify relative distinguished name (modrdn) requests. A remote, unauthenticated user could use this flaw to crash an OpenLDAP server via a modrdn request containing an empty old RDN value. (CVE-2011-1081)

Users of OpenLDAP should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing this update, the OpenLDAP daemons will be restarted automatically.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2011-1024

https://access.redhat.com/security/cve/cve-2011-1025

https://access.redhat.com/security/cve/cve-2011-1081

https://access.redhat.com/errata/RHSA-2011:0347

Plugin Details

Severity: Medium

ID: 52628

File Name: redhat-RHSA-2011-0347.nasl

Version: 1.10

Type: local

Agent: unix

Published: 3/11/2011

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2011-1025

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:6.0, p-cpe:/a:redhat:enterprise_linux:openldap-devel, p-cpe:/a:redhat:enterprise_linux:openldap-clients, p-cpe:/a:redhat:enterprise_linux:openldap-servers-sql, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:compat-openldap, p-cpe:/a:redhat:enterprise_linux:openldap-servers, p-cpe:/a:redhat:enterprise_linux:openldap-debuginfo, p-cpe:/a:redhat:enterprise_linux:openldap

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/10/2011

Vulnerability Publication Date: 3/19/2011

Reference Information

CVE: CVE-2011-1024, CVE-2011-1025, CVE-2011-1081

BID: 46363

RHSA: 2011:0347