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Category:   Application (Directory)  >   OpenLDAP Vendors:   OpenLDAP.org
(Red Hat Issues Fix) OpenLDAP Bugs in slap_mods_free() and IA5StringNormalize() Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024223
SecurityTracker URL:  http://securitytracker.com/id/1024223
CVE Reference:   CVE-2010-0211   (Links to External Site)
Date:  Jul 20 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.4.23
Description:   Two vulnerabilities were reported in OpenLDAP. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted data to cause an invalid pointer to be freed, potentially executing arbitrary code on the target system [CVE-2010-0211]. The vulnerability resides in the slap_modrdn2mods() function in 'modrdn.c'.

A remote user can send specially crafted data to trigger a null pointer dereference and potentially execute arbitrary code on the target system [CVE-2010-0212]. The vulnerability resides in the IA5StringNormalize() function in 'schema_init.c'.

Ilkka Mattila and Tuomas Salom.ki using the Codenomicon LDAPv3 test suite reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   Red Hat has issued a fix for CVE-2010-0211.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0543.html

Vendor URL:  www.openldap.org/its/index.cgi/Software Bugs?id=6570 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4

Message History:   This archive entry is a follow-up to the message listed below.
Jul 20 2010 OpenLDAP Bugs in slap_mods_free() and IA5StringNormalize() Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2010:0543-01] Moderate: openldap security update

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: openldap security update
Advisory ID:       RHSA-2010:0543-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0543.html
Issue date:        2010-07-20
CVE Names:         CVE-2009-3767 CVE-2010-0211 
=====================================================================

1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

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
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.

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
http://kbase.redhat.com/faq/docs/DOC-11259

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

530715 - CVE-2009-3767 OpenLDAP: Doesn't properly handle NULL character in subject Common Name
605448 - CVE-2010-0211 openldap: modrdn processing uninitialized pointer free

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/openldap-2.2.13-12.el4_8.3.src.rpm

i386:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-clients-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-devel-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.i386.rpm

ia64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.ia64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.ia64.rpm
openldap-clients-2.2.13-12.el4_8.3.ia64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.ia64.rpm
openldap-devel-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.ia64.rpm

ppc:
compat-openldap-2.1.30-12.el4_8.3.ppc.rpm
compat-openldap-2.1.30-12.el4_8.3.ppc64.rpm
openldap-2.2.13-12.el4_8.3.ppc.rpm
openldap-2.2.13-12.el4_8.3.ppc64.rpm
openldap-clients-2.2.13-12.el4_8.3.ppc.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.ppc.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.ppc64.rpm
openldap-devel-2.2.13-12.el4_8.3.ppc.rpm
openldap-servers-2.2.13-12.el4_8.3.ppc.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.ppc.rpm

s390:
compat-openldap-2.1.30-12.el4_8.3.s390.rpm
openldap-2.2.13-12.el4_8.3.s390.rpm
openldap-clients-2.2.13-12.el4_8.3.s390.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.s390.rpm
openldap-devel-2.2.13-12.el4_8.3.s390.rpm
openldap-servers-2.2.13-12.el4_8.3.s390.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.s390.rpm

s390x:
compat-openldap-2.1.30-12.el4_8.3.s390.rpm
compat-openldap-2.1.30-12.el4_8.3.s390x.rpm
openldap-2.2.13-12.el4_8.3.s390.rpm
openldap-2.2.13-12.el4_8.3.s390x.rpm
openldap-clients-2.2.13-12.el4_8.3.s390x.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.s390.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.s390x.rpm
openldap-devel-2.2.13-12.el4_8.3.s390x.rpm
openldap-servers-2.2.13-12.el4_8.3.s390x.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.s390x.rpm

x86_64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.x86_64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.x86_64.rpm
openldap-clients-2.2.13-12.el4_8.3.x86_64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.x86_64.rpm
openldap-devel-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/openldap-2.2.13-12.el4_8.3.src.rpm

i386:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-clients-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-devel-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.i386.rpm

x86_64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.x86_64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.x86_64.rpm
openldap-clients-2.2.13-12.el4_8.3.x86_64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.x86_64.rpm
openldap-devel-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/openldap-2.2.13-12.el4_8.3.src.rpm

i386:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-clients-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-devel-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.i386.rpm

ia64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.ia64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.ia64.rpm
openldap-clients-2.2.13-12.el4_8.3.ia64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.ia64.rpm
openldap-devel-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.ia64.rpm

x86_64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.x86_64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.x86_64.rpm
openldap-clients-2.2.13-12.el4_8.3.x86_64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.x86_64.rpm
openldap-devel-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/openldap-2.2.13-12.el4_8.3.src.rpm

i386:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-clients-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-devel-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-2.2.13-12.el4_8.3.i386.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.i386.rpm

ia64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.ia64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.ia64.rpm
openldap-clients-2.2.13-12.el4_8.3.ia64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.ia64.rpm
openldap-devel-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-2.2.13-12.el4_8.3.ia64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.ia64.rpm

x86_64:
compat-openldap-2.1.30-12.el4_8.3.i386.rpm
compat-openldap-2.1.30-12.el4_8.3.x86_64.rpm
openldap-2.2.13-12.el4_8.3.i386.rpm
openldap-2.2.13-12.el4_8.3.x86_64.rpm
openldap-clients-2.2.13-12.el4_8.3.x86_64.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.i386.rpm
openldap-debuginfo-2.2.13-12.el4_8.3.x86_64.rpm
openldap-devel-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-2.2.13-12.el4_8.3.x86_64.rpm
openldap-servers-sql-2.2.13-12.el4_8.3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2009-3767.html
https://www.redhat.com/security/data/cve/CVE-2010-0211.html
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2010 Red Hat, Inc.
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