Red Hat Security Advisory: bind-dyndb-ldap security update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2012:1139 Final 1 1 2012-08-03T00:12:00Z Current version 2012-08-03T00:12:00Z 2012-08-03T00:12:00Z Red Hat rhsa-to-cvrf 1.0.1484 2012-08-03T00:24:01Z 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. 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. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2012 Red Hat, Inc. All rights reserved. Important https://rhn.redhat.com/errata/RHSA-2012-1139.html https://rhn.redhat.com/errata/RHSA-2012-1139.html https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/updates/classification/#important Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Workstation (v. 6) bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1.src.rpm bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1 as a component of Red Hat Enterprise Linux Server (v. 6) bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1 as a component of Red Hat Enterprise Linux Workstation (v. 6) 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. 2012-07-20T00:00:00Z 2012-08-01T00:00:00Z CVE-2012-3429 6Server-6.3.z:bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1 6Workstation-6.3.z:bind-dyndb-ldap-1.1.0-0.9.b1.el6_3.1 Important 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P 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 https://rhn.redhat.com/errata/RHSA-2012-1139.html https://www.redhat.com/security/data/cve/CVE-2012-3429.html CVE-2012-3429 https://bugzilla.redhat.com/show_bug.cgi?id=842466 bz#842466: CVE-2012-3429 bind-dyndb-ldap: named DoS via DNS query with $ in name Red Hat would like to thank Sigbjorn Lie of the Atea Norway for reporting this issue.