The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite.

The remote VMware ESX host is missing a security-related patch. It is, therefore, affected by multiple vulnerabilities, including arbitrary code execution vulnerabilities, in several third-party components and libraries :

  - glibc
  - glibc-common
  - nscd
  - openldap
  - sudo

The remote host is affected by the vulnerability described in GLSA-201406-36 (OpenLDAP: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in OpenLDAP. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker might employ a specially crafted certificate to       conduct man-in-the-middle attacks on SSL connections made using OpenLDAP,       bypass security restrictions or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

From Red Hat Security Advisory 2010:0543 :

Updated openldap packages that fix two security issues are now available for Red Hat Enterprise Linux 4.

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.

An uninitialized pointer use flaw was discovered in the way the slapd daemon handled modify relative distinguished name (modrdn) requests.
An authenticated user with privileges to perform modrdn operations could use this flaw to crash the slapd daemon via specially crafted modrdn requests. (CVE-2010-0211)

Red Hat would like to thank CERT-FI for responsibly reporting the CVE-2010-0211 flaw, who credit Ilkka Mattila and Tuomas Salomaki for the discovery of the issue.

A flaw was found in the way OpenLDAP handled NUL characters in the CommonName field of X.509 certificates. An attacker able to get a carefully-crafted certificate signed by a trusted Certificate Authority could trick applications using OpenLDAP libraries into accepting it by mistake, allowing the attacker to perform a man-in-the-middle attack. (CVE-2009-3767)

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.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2010-0542 advisory.

    [2.3.43-12.1]
    - fixed segfault issues in modrdn (#606375)
    - added patch handling null char in TLS to compat package       (#606375, patch backported by Jan Vcelak <jvcelak@redhat.com>)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Multiple flaws were discovered in the way the slapd daemon handled modify relative distinguished name (modrdn) requests. An authenticated user with privileges to perform modrdn operations could use these flaws to crash the slapd daemon via specially crafted modrdn requests.
(CVE-2010-0211, CVE-2010-0212)

After installing this update, the OpenLDAP daemons will be restarted automatically.

Several issues have been fixed in OpenLDAP :

  - specially crafted MODRDN operations can crash the     OpenLDAP server. (CVE-2010-0211 / CVE-2010-0212)

  - syncrepl might loose deletes in refreshAndPersist mode

a. Service Console update for glibc

   The service console packages glibc, glibc-common, and nscd are each    updated to version 2.5-34.4908.vmw.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2010-3847 and CVE-2010-3856 to the issues    addressed in this update.

b. Service Console update for sudo

   The service console package sudo is updated to version    1.7.2p1-8.el5_5.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the name CVE-2010-2956 to the issue addressed in this    update.

c. Service Console update for openldap

   The service console package openldap is updated to version    2.3.43-12.el5_5.1.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2010-0211 and CVE-2010-0212 to the issues    addressed in this update.

Several issues have been fixed in OpenLDAP :

  - specially crafted MODRDN operations can crash the     OpenLDAP server. (CVE-2010-0211 / CVE-2010-0212)

  - syncrepl might loose deletes in refreshAndPersist mode

  - DoS when handling 0-bytes

Versions of Mac OS X 10.6 earlier than 10.6.5 are potentially affected by multiple vulnerabilities.  Mac OS X 10.6.5 contains security fixes for the following products :

  - AFP Server

  - Apache mod_perl

  - Apache

  - AppKit

  - ATS

  - CFNetwork

  - CoreGraphics

  - CoreText

  - CUPS

  - Directory Services

  - diskdev_cmds

Disk Images

  - Flash Player plug-in

  - gzip

  - Image Capture

  - ImageIO

  - Image RAW

  - Kernel

  - MySQL

  - neon

  - Networking

  - OpenLDAP

  - OpenSSL

  - Password Server

  - PHP

  - Printing

  - python

  - QuickLook

  - QuickTime

  - Safari RSS

  - Time Machine

  - Wiki Server

  - X11

  - xar

The remote host is running a version of Mac OS X 10.6.x that is prior to 10.6.5.

Mac OS X 10.6.5 contains security fixes for the following products :

  - AFP Server
  - Apache mod_perl
  - Apache
  - AppKit
  - ATS
  - CFNetwork
  - CoreGraphics
  - CoreText
  - CUPS
  - Directory Services
  - diskdev_cmds
  - Disk Images
  - Flash Player plug-in
  - gzip
  - Image Capture
  - ImageIO
  - Image RAW
  - Kernel
  - MySQL
  - neon
  - Networking
  - OpenLDAP
  - OpenSSL
  - Password Server
  - PHP
  - Printing
  - python
  - QuickLook
  - QuickTime
  - Safari RSS
  - Time Machine
  - Wiki Server
  - X11
  - xar

- fixed regression caused by tls accept patch

    - updated autofs schema

    - openldap built with conectionless support

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several issues have been fixed in OpenLDAP: - specially crafted MODRDN operations can crash the OpenLDAP server. (CVE-2010-0211 / CVE-2010-0212)

  - syncrepl might loose deletes in refreshAndPersist mode -     replicating from a SLES11 master to a SLES10 slave can     cause inconsistencies - libldap hangs with 100% CPU when     referral chasing is enabled

The following issues have been fixed in OpenLDAP: specially crafted MODRDN operations can crash the OpenLDAP server (CVE-2010-0211 and CVE-2010-0212).

also fixed was following bug :

  - Delete Operations happening during the 'Refresh' phase     of 'refreshAndPersist' replication failed to replicate     under certain circumstances (bnc#606294, ITS#6555)

The following issues have been fixed in OpenLDAP: specially crafted MODRDN operations can crash the OpenLDAP server (CVE-2010-0211 and CVE-2010-0212).

also fixed were following bugs :

  - adding a 'postalAdress' Attribute with an embedded NUL     value caused the LDAP server to terminate with an     assertion failure (bnc#555725, ITS#6379)

  - Delete Operations happening during the 'Refresh' phase     of 'refreshAndPersist' replication failed to replicate     under certain circumstances (bnc#606294, ITS#6555)

This update fixes two denial of service bugs in the openldap server while handling MODRDN operations. (CVE-2010-0211 and CVE-2010-0212)

- Tue Jul 20 2010 Jan Vcelak <jvcelak at redhat.com> -     2.4.21-10

    - CVE-2010-0211 openldap: modrdn processing       uninitialized pointer free (#605448)

    - CVE-2010-0212 openldap: modrdn processing       IA5StringNormalize NULL pointer dereference (#605452)

    - obsolete configuration file moved to       /usr/share/openldap-servers (#612602)

    - Thu Jul 1 2010 Jan Zeleny <jzeleny at redhat.com> -       2.4.21-9

    - another shot at previous fix

    - Wed Jun 30 2010 Jan Zeleny <jzeleny at redhat.com> -       2.4.21-8

    - fixed issue with owner of /usr/lib/ldap/__db.*       (#609523)

    - Thu May 27 2010 Jan Zeleny <jzeleny at redhat.com> -       2.4.21-7

    - updated autofs schema (#587722)

    - openldap built with conectionless support (#587722)

    - Fri Mar 19 2010 Jan Zeleny <jzeleny at redhat.com> -       2.4.21-6

    - moved slapd to start earlier during boot sequence

    - Tue Mar 16 2010 Jan Zeleny <jzeleny at redhat.com> -       2.4.21-5

    - minor corrections of init script (#571235, #570057,       #573804)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Using the Codenomicon LDAPv3 test suite, Ilkka Mattila and Tuomas Salomaki discovered that the slap_modrdn2mods function in modrdn.c in OpenLDAP does not check the return value from a call to the smr_normalize function. A remote attacker could use specially crafted modrdn requests to crash the slapd daemon or possibly execute arbitrary code. (CVE-2010-0211)

Using the Codenomicon LDAPv3 test suite, Ilkka Mattila and Tuomas Salomaki discovered that OpenLDAP does not properly handle empty RDN strings. A remote attacker could use specially crafted modrdn requests to crash the slapd daemon. (CVE-2010-0212)

In the default installation under Ubuntu 8.04 LTS and later, attackers would be isolated by the OpenLDAP AppArmor profile for the slapd daemon.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Two remote vulnerabilities have been discovered in OpenLDAP. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2010-0211     The slap_modrdn2mods function in modrdn.c in OpenLDAP     2.4.22 does not check the return value of a call to the     smr_normalize function, which allows remote attackers to     cause a denial of service (segmentation fault) and     possibly execute arbitrary code via a modrdn call with     an RDN string containing invalid UTF-8 sequences.

  - CVE-2010-0212     OpenLDAP 2.4.22 allows remote attackers to cause a     denial of service (crash) via a modrdn call with a     zero-length RDN destination string.

Multiple vulnerabilities has been discovered and corrected in openldap :

The slap_modrdn2mods function in modrdn.c in OpenLDAP 2.4.22 does not check the return value of a call to the smr_normalize function, which allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a modrdn call with an RDN string containing invalid UTF-8 sequences, which triggers a free of an invalid, uninitialized pointer in the slap_mods_free function, as demonstrated using the Codenomicon LDAPv3 test suite (CVE-2010-0211).

OpenLDAP 2.4.22 allows remote attackers to cause a denial of service (crash) via a modrdn call with a zero-length RDN destination string, which is not properly handled by the smr_normalize function and triggers a NULL pointer dereference in the IA5StringNormalize function in schema_init.c, as demonstrated using the Codenomicon LDAPv3 test suite (CVE-2010-0212).

Packages for 2008.0 and 2009.0 are provided as of the Extended Maintenance Program. Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&amp;products_id=4 90

The updated packages have been patched to correct these issues.

Updated openldap packages that fix two security issues are now available for Red Hat Enterprise Linux 4.

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.

An uninitialized pointer use flaw was discovered in the way the slapd daemon handled modify relative distinguished name (modrdn) requests.
An authenticated user with privileges to perform modrdn operations could use this flaw to crash the slapd daemon via specially crafted modrdn requests. (CVE-2010-0211)

Red Hat would like to thank CERT-FI for responsibly reporting the CVE-2010-0211 flaw, who credit Ilkka Mattila and Tuomas Salomaki for the discovery of the issue.

A flaw was found in the way OpenLDAP handled NUL characters in the CommonName field of X.509 certificates. An attacker able to get a carefully-crafted certificate signed by a trusted Certificate Authority could trick applications using OpenLDAP libraries into accepting it by mistake, allowing the attacker to perform a man-in-the-middle attack. (CVE-2009-3767)

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.

Updated openldap packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5.

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.

Multiple flaws were discovered in the way the slapd daemon handled modify relative distinguished name (modrdn) requests. An authenticated user with privileges to perform modrdn operations could use these flaws to crash the slapd daemon via specially crafted modrdn requests.
(CVE-2010-0211, CVE-2010-0212)

Red Hat would like to thank CERT-FI for responsibly reporting these flaws, who credit Ilkka Mattila and Tuomas Salomaki for the discovery of the issues.

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

The following issues have been fixed in OpenLDAP: specially crafted MODRDN operations can crash the OpenLDAP server (CVE-2010-0211 and CVE-2010-0212).

ID	Name	Product	Family	Severity
89673	VMware ESX Third-Party Libraries Multiple Vulnerabilities (VMSA-2011-0001) (remote check)	Nessus	Misc.	high
76331	GLSA-201406-36 : OpenLDAP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	medium
68065	Oracle Linux 4 : openldap (ELSA-2010-0543)	Nessus	Oracle Linux Local Security Checks	medium
68064	Oracle Linux 5 : openldap (ELSA-2010-0542)	Nessus	Oracle Linux Local Security Checks	critical
60819	Scientific Linux Security Update : openldap on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
51616	SuSE 11.1 Security Update : openLDAP (SAT Patch Number 2551)	Nessus	SuSE Local Security Checks	medium
51422	VMSA-2011-0001 : VMware ESX third-party updates for Service Console packages glibc, sudo, and openldap	Nessus	VMware ESX Local Security Checks	high
50933	SuSE 11 Security Update : openLDAP (SAT Patch Number 2552)	Nessus	SuSE Local Security Checks	medium
5705	Mac OS X 10.6 < 10.6.5 Multiple Vulnerabilities	Nessus Network Monitor	Generic	critical
50548	Mac OS X 10.6.x < 10.6.5 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical
50428	Fedora 12 : openldap-2.4.19-6.fc12 (2010-11319)	Nessus	Fedora Local Security Checks	medium
49907	SuSE 10 Security Update : openLDAP (ZYPP Patch Number 7074)	Nessus	SuSE Local Security Checks	medium
48756	openSUSE Security Update : libldap-2_4-2 (openSUSE-SU-2010:0546-1)	Nessus	SuSE Local Security Checks	medium
48754	openSUSE Security Update : libldap-2_4-2 (openSUSE-SU-2010:0547-1)	Nessus	SuSE Local Security Checks	medium
48752	SuSE9 Security Update : openLDAP2 (YOU Patch Number 12624)	Nessus	SuSE Local Security Checks	medium
48410	Fedora 13 : openldap-2.4.21-10.fc13 (2010-11343)	Nessus	Fedora Local Security Checks	medium
48282	Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : openldap, openldap2.2, openldap2.3 vulnerabilities (USN-965-1)	Nessus	Ubuntu Local Security Checks	medium
48220	Debian DSA-2077-1 : openldap - several vulnerabilities	Nessus	Debian Local Security Checks	medium
48200	Mandriva Linux Security Advisory : openldap (MDVSA-2010:142)	Nessus	Mandriva Local Security Checks	medium
47878	RHEL 4 : openldap (RHSA-2010:0543)	Nessus	Red Hat Local Security Checks	medium
47877	RHEL 5 : openldap (RHSA-2010:0542)	Nessus	Red Hat Local Security Checks	medium
47819	openSUSE Security Update : openldap2 (openSUSE-SU-2010:0427-1)	Nessus	SuSE Local Security Checks	medium
47790	CentOS 4 : openldap (CESA-2010:0543)	Nessus	CentOS Local Security Checks	medium
47789	CentOS 5 : openldap (CESA-2010:0542)	Nessus	CentOS Local Security Checks	medium

Detections

Analytics

CVE-2010-0211

critical

Tenable Plugins

high

medium

medium

critical

medium

medium

high

medium

critical

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium