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Red Hat Security Advisory 2012-0683-01
Posted May 22, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-0683-01 - 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. 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.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2012-2134
SHA-256 | a0bb807657aa4121778e2cad43904858659ee8efe0bbd651d2a059e6b4d9c116

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