[RHSA-2012:1139-01] Important: bind-dyndb-ldap security update

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Red Hat Security Advisory

 

Synopsis: Important: bind-dyndb-ldap security update

Advisory ID: RHSA-2012:1139-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-1139.html

Issue date: 2012-08-03

CVE Names: CVE-2012-3429

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1. Summary:

 

An updated bind-dyndb-ldap package that fixes one security issue is now

available for Red Hat Enterprise Linux 6.

 

The Red Hat Security Response Team has rated this update as having

important security impact. A Common Vulnerability Scoring System (CVSS)

base score, which gives a detailed severity rating, is available from the

CVE link in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

 

3. Description:

 

The dynamic LDAP back end is a plug-in for BIND that provides back-end

capabilities to LDAP databases. It features support for dynamic updates and

internal caching that help to reduce the load on LDAP servers.

 

A flaw was found in the way bind-dyndb-ldap performed the escaping of names

from DNS requests for use in LDAP queries. A remote attacker able to send

DNS queries to a named server that is configured to use bind-dyndb-ldap

could use this flaw to cause named to exit unexpectedly with an assertion

failure. (CVE-2012-3429)

 

Red Hat would like to thank Sigbjorn Lie of Atea Norway for reporting this

issue.

 

All bind-dyndb-ldap users should upgrade to this updated package, which

contains a backported patch to correct this issue. For the update to take

effect, the named service must be restarted.

 

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/knowledge/articles/11258

 

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

 

842466 - CVE-2012-3429 bind-dyndb-ldap: named DoS via DNS query with $ in name

 

6. Package List:

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.src.rpm

 

i386:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.i686.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.i686.rpm

 

ppc64:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.ppc64.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.ppc64.rpm

 

s390x:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.s390x.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.s390x.rpm

 

x86_64:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.x86_64.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.src.rpm

 

i386:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.i686.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.i686.rpm

 

x86_64:

bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.x86_64.rpm

bind-dyndb-ldap-debuginfo-1.1.0-0.9.b1.el6_3.1.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://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-3429.html

https://access.redhat.com/security/updates/classification/#important

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2012 Red Hat, Inc.

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