6.8 - RHSA-2011:0347

Executive Summary

Summary
Title	openldap security update

Informations
Name	RHSA-2011:0347	First vendor Publication	2011-03-10
Vendor	RedHat	Last vendor Modification	2011-03-10
Severity (Vendor)	Moderate	Revision	01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score	6.8	Attack Range	Network
Cvss Impact Score	6.4	Attack Complexity	Medium
Cvss Expoit Score	8.6	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

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.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

680466 - CVE-2011-1024 openldap: forwarded bind failure messages cause success 680472 - CVE-2011-1025 openldap: rootpw not verified via slapd.conf when using the NDB backend 680975 - CVE-2011-1081 openldap: DoS when submitting special MODRDN request

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0347.html

CWE : Common Weakness Enumeration

%	Id	Name
33 %	CWE-399	Resource Management Errors
33 %	CWE-287	Improper Authentication
33 %	CWE-264	Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13722

Oval ID:	oval:org.mitre.oval:def:13722
Title:	USN-1100-1 -- openldap, openldap2.3 vulnerabilities
Description:	It was discovered that OpenLDAP did not properly check forwarded authentication failures when using a slave server and chain overlay. If OpenLDAP were configured in this manner, an attacker could bypass authentication checks by sending an invalid password to a slave server. It was discovered that OpenLDAP did not properly perform authentication checks to the rootdn when using the back-ndb backend. An attacker could exploit this to access the directory by sending an arbitrary password. Ubuntu does not ship OpenLDAP with back-ndb support by default. This issue did not affect Ubuntu 8.04 LTS. It was discovered that OpenLDAP did not properly validate modrdn requests. An unauthenticated remote user could use this to cause a denial of service via application crash
Family:	unix	Class:	patch
Reference(s):	USN-1100-1 CVE-2011-1024 CVE-2011-1025 CVE-2011-1081	Version:	5
Platform(s):	Ubuntu 8.04 Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04	Product(s):	openldap openldap2.3
Definition Synopsis:
Release section Ubuntu 8.04 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is amd64 AND Installed architecture is lpia AND Installed architecture is powerpc AND Packages section slapd-dbg DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 AND libldap-2.4-2 DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 AND libldap-2.4-2-dbg DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 AND ldap-utils DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 AND libldap2-dev DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 AND slapd DPKG is earlier than 2.4.9-0ubuntu0.8.04.5 OR Release section Ubuntu 10.10 is installed AND Supported architectures section Installed architecture is i386 AND Installed architecture is armel AND Installed architecture is amd64 AND Installed architecture is powerpc AND Packages section slapd-dbg DPKG is earlier than 2.4.23-0ubuntu3.5 AND libldap-2.4-2 DPKG is earlier than 2.4.23-0ubuntu3.5 AND libldap-2.4-2-dbg DPKG is earlier than 2.4.23-0ubuntu3.5 AND ldap-utils DPKG is earlier than 2.4.23-0ubuntu3.5 AND libldap2-dev DPKG is earlier than 2.4.23-0ubuntu3.5 AND slapd DPKG is earlier than 2.4.23-0ubuntu3.5 OR Release section Ubuntu 9.10 is installed AND Supported architectures section Installed architecture is amd64 AND Installed architecture is i386 AND Installed architecture is powerpc AND Installed architecture is sparc AND Installed architecture is armel AND Installed architecture is lpia AND Packages section slapd-dbg DPKG is earlier than 2.4.18-0ubuntu1.2 AND libldap-2.4-2 DPKG is earlier than 2.4.18-0ubuntu1.2 AND libldap-2.4-2-dbg DPKG is earlier than 2.4.18-0ubuntu1.2 AND ldap-utils DPKG is earlier than 2.4.18-0ubuntu1.2 AND libldap2-dev DPKG is earlier than 2.4.18-0ubuntu1.2 AND slapd DPKG is earlier than 2.4.18-0ubuntu1.2 OR Release section Ubuntu 10.04 is installed AND Supported architectures section Installed architecture is sparc AND Installed architecture is i386 AND Installed architecture is armel AND Installed architecture is amd64 AND Installed architecture is powerpc AND Packages section slapd-dbg DPKG is earlier than 2.4.21-0ubuntu5.4 AND libldap-2.4-2 DPKG is earlier than 2.4.21-0ubuntu5.4 AND libldap-2.4-2-dbg DPKG is earlier than 2.4.21-0ubuntu5.4 AND ldap-utils DPKG is earlier than 2.4.21-0ubuntu5.4 AND libldap2-dev DPKG is earlier than 2.4.21-0ubuntu5.4 AND slapd DPKG is earlier than 2.4.21-0ubuntu5.4

Definition Id: oval:org.mitre.oval:def:21750

Oval ID:	oval:org.mitre.oval:def:21750
Title:	RHSA-2011:0347: openldap security update (Moderate)
Description:	modrdn.c in slapd in OpenLDAP 2.4.x before 2.4.24 allows remote attackers to cause a denial of service (daemon crash) via a relative Distinguished Name (DN) modification request (aka MODRDN operation) that contains an empty value for the OldDN field.
Family:	unix	Class:	patch
Reference(s):	RHSA-2011:0347-01 CVE-2011-1024 CVE-2011-1025 CVE-2011-1081	Version:	42
Platform(s):	Red Hat Enterprise Linux 6	Product(s):	openldap
Definition Synopsis:
The operating system installed on the system is Red Hat Enterprise Linux 6 Packages section openldap-servers is earlier than 0:2.4.19-15.el6_0.2 AND compat-openldap is earlier than 0:2.4.19_2.3.43-15.el6_0.2 AND openldap is earlier than 0:2.4.19-15.el6_0.2 AND openldap-clients is earlier than 0:2.4.19-15.el6_0.2 AND openldap-devel is earlier than 0:2.4.19-15.el6_0.2 AND openldap-servers-sql is earlier than 0:2.4.19-15.el6_0.2

Definition Id: oval:org.mitre.oval:def:21865

Oval ID:	oval:org.mitre.oval:def:21865
Title:	RHSA-2011:0346: openldap security and bug fix update (Moderate)
Description:	chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.
Family:	unix	Class:	patch
Reference(s):	RHSA-2011:0346-01 CESA-2011:0346 CVE-2011-1024	Version:	4
Platform(s):	Red Hat Enterprise Linux 5 CentOS Linux 5	Product(s):	openldap
Definition Synopsis:
Redhat 5 or Centos 5 release The operating system installed on the system is Red Hat Enterprise Linux 5 AND The operating system installed on the system is CentOS Linux 5.x Packages section openldap-devel is earlier than 0:2.3.43-12.el5_6.7 AND openldap-clients is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-sql is earlier than 0:2.3.43-12.el5_6.7 AND compat-openldap is earlier than 0:2.3.43_2.2.29-12.el5_6.7 AND openldap is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-overlays is earlier than 0:2.3.43-12.el5_6.7

Definition Id: oval:org.mitre.oval:def:22679

Oval ID:	oval:org.mitre.oval:def:22679
Title:	ELSA-2011:0347: openldap security update (Moderate)
Description:	modrdn.c in slapd in OpenLDAP 2.4.x before 2.4.24 allows remote attackers to cause a denial of service (daemon crash) via a relative Distinguished Name (DN) modification request (aka MODRDN operation) that contains an empty value for the OldDN field.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:0347-01 CVE-2011-1024 CVE-2011-1025 CVE-2011-1081	Version:	17
Platform(s):	Oracle Linux 6	Product(s):	openldap
Definition Synopsis:
Oracle Linux 6.x rpm test openldap-servers is earlier than 0:2.4.19-15.el6_0.2 AND compat-openldap is earlier than 0:2.4.19_2.3.43-15.el6_0.2 AND openldap is earlier than 0:2.4.19-15.el6_0.2 AND openldap-clients is earlier than 0:2.4.19-15.el6_0.2 AND openldap-devel is earlier than 0:2.4.19-15.el6_0.2 AND openldap-servers-sql is earlier than 0:2.4.19-15.el6_0.2

Definition Id: oval:org.mitre.oval:def:23088

Oval ID:	oval:org.mitre.oval:def:23088
Title:	ELSA-2011:0346: openldap security and bug fix update (Moderate)
Description:	chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:0346-01 CVE-2011-1024	Version:	6
Platform(s):	Oracle Linux 5	Product(s):	openldap
Definition Synopsis:
Oracle Linux 5.x rpm test openldap-devel is earlier than 0:2.3.43-12.el5_6.7 AND openldap-clients is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-sql is earlier than 0:2.3.43-12.el5_6.7 AND compat-openldap is earlier than 0:2.3.43_2.2.29-12.el5_6.7 AND openldap is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-overlays is earlier than 0:2.3.43-12.el5_6.7

Definition Id: oval:org.mitre.oval:def:27370

Oval ID:	oval:org.mitre.oval:def:27370
Title:	DEPRECATED: ELSA-2011-0346 -- openldap security and bug fix update (moderate)
Description:	[2.3.43-12.7] - fix: CVE-2011-1024 ppolicy forwarded bind failure messages cause success (#680484) [2.3.43-12.6] - fix: slapd concurrent access to connections causes slapd to silently die (#677611)
Family:	unix	Class:	patch
Reference(s):	ELSA-2011-0346 CVE-2011-1024	Version:	4
Platform(s):	Oracle Linux 5	Product(s):	openldap
Definition Synopsis:
Oracle Linux 5.x Packages match section openldap is earlier than 0:2.3.43-12.el5_6.7 AND compat-openldap is earlier than 0:2.3.43_2.2.29-12.el5_6.7 AND openldap-clients is earlier than 0:2.3.43-12.el5_6.7 AND openldap-devel is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-overlays is earlier than 0:2.3.43-12.el5_6.7 AND openldap-servers-sql is earlier than 0:2.3.43-12.el5_6.7

Definition Id: oval:org.mitre.oval:def:28071

Oval ID:	oval:org.mitre.oval:def:28071
Title:	DEPRECATED: ELSA-2011-0347 -- openldap security update (moderate)
Description:	[2.4.19-15.2] - fix: security - DoS when submitting special MODRDN request (#680975) [2.4.19-15.1] - fix: CVE-2011-1024 ppolicy forwarded bind failure messages cause success - fix: CVE-2011-1025 rootpw is not verified for ndb backend
Family:	unix	Class:	patch
Reference(s):	ELSA-2011-0347 CVE-2011-1024 CVE-2011-1025 CVE-2011-1081	Version:	4
Platform(s):	Oracle Linux 6	Product(s):	openldap
Definition Synopsis:
Oracle Linux 6.x Packages match section openldap is earlier than 0:2.4.19-15.el6_0.2 AND compat-openldap is earlier than 0:2.4.19_2.3.43-15.el6_0.2 AND openldap-clients is earlier than 0:2.4.19-15.el6_0.2 AND openldap-devel is earlier than 0:2.4.19-15.el6_0.2 AND openldap-servers is earlier than 0:2.4.19-15.el6_0.2 AND openldap-servers-sql is earlier than 0:2.4.19-15.el6_0.2

CPE : Common Platform Enumeration

Type	Description	Count
Application	Openldap cpe:2.3:a:openldap:openldap:2.4.9:::::::* cpe:2.3:a:openldap:openldap:2.4.8:::::::* cpe:2.3:a:openldap:openldap:2.4.7:::::::* cpe:2.3:a:openldap:openldap:2.4.6:::::::* cpe:2.3:a:openldap:openldap:2.4.23:::::::* cpe:2.3:a:openldap:openldap:2.4.22:::::::* cpe:2.3:a:openldap:openldap:2.4.21:::::::* cpe:2.3:a:openldap:openldap:2.4.20:::::::* cpe:2.3:a:openldap:openldap:2.4.19:::::::* cpe:2.3:a:openldap:openldap:2.4.18:::::::* cpe:2.3:a:openldap:openldap:2.4.17:::::::* cpe:2.3:a:openldap:openldap:2.4.16:::::::* cpe:2.3:a:openldap:openldap:2.4.15:::::::* cpe:2.3:a:openldap:openldap:2.4.14:::::::* cpe:2.3:a:openldap:openldap:2.4.13:::::::* cpe:2.3:a:openldap:openldap:2.4.12:::::::* cpe:2.3:a:openldap:openldap:2.4.11:::::::* cpe:2.3:a:openldap:openldap:2.4.10:::::::*	18

OpenVAS Exploits

Date	Description
2012-07-30	Name : CentOS Update for compat-openldap CESA-2011:0346 centos5 x86_64 File : nvt/gb_CESA-2011_0346_compat-openldap_centos5_x86_64.nasl
2012-06-06	Name : RedHat Update for openldap RHSA-2011:0347-01 File : nvt/gb_RHSA-2011_0347-01_openldap.nasl
2011-09-27	Name : Fedora Update for openldap FEDORA-2011-3627 File : nvt/gb_fedora_2011_3627_openldap_fc14.nasl
2011-08-09	Name : CentOS Update for compat-openldap CESA-2011:0346 centos5 i386 File : nvt/gb_CESA-2011_0346_compat-openldap_centos5_i386.nasl
2011-04-01	Name : Mandriva Update for openldap MDVSA-2011:055 (openldap) File : nvt/gb_mandriva_MDVSA_2011_055.nasl
2011-04-01	Name : Mandriva Update for openldap MDVSA-2011:056 (openldap) File : nvt/gb_mandriva_MDVSA_2011_056.nasl
2011-04-01	Name : Ubuntu Update for openldap, openldap2.3 vulnerabilities USN-1100-1 File : nvt/gb_ubuntu_USN_1100_1.nasl
2011-03-15	Name : RedHat Update for openldap RHSA-2011:0346-01 File : nvt/gb_RHSA-2011_0346-01_openldap.nasl
2011-03-05	Name : FreeBSD Ports: openldap-server File : nvt/freebsd_openldap-server2.nasl

Open Source Vulnerability Database (OSVDB)

Id	Description
72530	OpenLDAP slapd modrdn.c Malformed Relative Distinguished Name (DN) Modificati...
72529	OpenLDAP back-ndb bind.cpp root Distinguished Name (DN) Arbitrary Password Au...
72528	OpenLDAP back-ldap chain.c Slave Server Invalid Password External-program Aut...

Nessus® Vulnerability Scanner

Date	Description
2016-06-22	Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2016-0069.nasl - Type : ACT_GATHER_INFO
2014-11-17	Name : The remote Red Hat host is missing a security update. File : redhat-RHSA-2011-0439.nasl - Type : ACT_GATHER_INFO
2014-07-01	Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201406-36.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_4_openldap2-110304.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_3_openldap2-110303.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0346.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0347.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110310_openldap_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110310_openldap_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2011-09-26	Name : The remote Fedora host is missing a security update. File : fedora_2011-3627.nasl - Type : ACT_GATHER_INFO
2011-05-05	Name : The remote openSUSE host is missing a security update. File : suse_11_2_openldap2-110303.nasl - Type : ACT_GATHER_INFO
2011-04-22	Name : The remote Fedora host is missing a security update. File : fedora_2011-3612.nasl - Type : ACT_GATHER_INFO
2011-04-19	Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_compat-libldap-2_3-0-110303.nasl - Type : ACT_GATHER_INFO
2011-04-15	Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-0346.nasl - Type : ACT_GATHER_INFO
2011-04-01	Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1100-1.nasl - Type : ACT_GATHER_INFO
2011-03-31	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-056.nasl - Type : ACT_GATHER_INFO
2011-03-31	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-055.nasl - Type : ACT_GATHER_INFO
2011-03-11	Name : The remote host is missing the patch for the advisory RHSA-2011-0347 File : redhat-RHSA-2011-0347.nasl - Type : ACT_GATHER_INFO
2011-03-11	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0346.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2014-02-17 11:54:29	Multiple Updates

Global Informations

Type	Count
CWE ID(s)	3
Oval ID(s)	7
CPE ID(s)	18
osvdb(s)	3
Openvas Exploit(s)	9
Nessus® Exploit(s)	19

	Related
6.8	CVE-2011-1025
5	CVE-2011-1081
4.6	CVE-2011-1024
Info : listing not affected by your CVSS Env Score

Same Subject	Severity
Login to view 3 more Alert(s)

6.8 - RHSA-2011:0347

Executive Summary

Security-Database Scoring CVSS v3

Security-Database Scoring CVSS v2

Detail

Original Source

CWE : Common Weakness Enumeration

OVAL Definitions

CPE : Common Platform Enumeration

OpenVAS Exploits

Open Source Vulnerability Database (OSVDB)

Nessus® Vulnerability Scanner

Alert History

Global Informations

Open Standards

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