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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Update for bind-dyndb-ldap RHSA-2012:0683-01
Summary:The remote host is missing an update for the 'bind-dyndb-ldap'; package(s) announced via the referenced advisory.
The remote host is missing an update for the 'bind-dyndb-ldap'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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 handled LDAP query errors. If a
remote attacker were able to send DNS queries to a named server that is
configured to use bind-dyndb-ldap, they could trigger such an error with a
DNS query leveraging bind-dyndb-ldap's insufficient escaping of the LDAP
base DN (distinguished name). This would result in an invalid LDAP query
that named would retry in a loop, preventing it from responding to other
DNS queries. With this update, bind-dyndb-ldap only attempts to retry one
time when an LDAP search returns an unexpected error. (CVE-2012-2134)

Red Hat would like to thank Ronald van Zantvoort 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.

Affected Software/OS:
bind-dyndb-ldap on Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2012-2134
RedHat Security Advisories: RHSA-2012:0683
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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