ID de Prueba:	1.3.6.1.4.1.25623.1.0.870691
Categoría:	Red Hat Local Security Checks
Título:	RedHat Update for bind-dyndb-ldap RHSA-2012:0683-01
Resumen:	The remote host is missing an update for the 'bind-dyndb-ldap'; package(s) announced via the referenced advisory.
Descripción:	Summary: 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) Solution: Please Install the Updated Packages. CVSS Score: 4.3 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2012-2134 48901 http://secunia.com/advisories/48901 81619 http://www.osvdb.org/81619 RHSA-2012:0683 http://rhn.redhat.com/errata/RHSA-2012-0683.html [Freeipa-users] 20120424 named-dyndb-ldap looses connection when the LDAP server is under high load https://www.redhat.com/archives/freeipa-users/2012-April/msg00144.html [oss-security] 20140424 Re: CVE Request -- bind-dyndb-ldap: Bind DoS (named hang) by processing DNS query for zone served by bind-dyndb-ldap http://www.openwall.com/lists/oss-security/2012/04/24/15 https://bugzilla.redhat.com/show_bug.cgi?id=815846 https://git.fedorahosted.org/cgit/bind-dyndb-ldap.git/tree/NEWS
Copyright	Copyright (C) 2012 Greenbone AG

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