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Scientific Linux alert SL-bind-20120522 (bind-dyndb-ldap)

From:  riehecky@fnal.gov
To:  scientific-linux-errata@fnal.gov
Subject:  Security ERRATA Important: bind-dyndb-ldap on SL6.x i386/x86_64
Date:  Tue, 22 May 2012 09:03:37 -0500
Message-ID:  <201205221403.q4ME3bIH026734@fefmon2.fnal.gov>
Archive-link:  Article, Thread

Synopsis: Important: bind-dyndb-ldap security update Issue Date: 2012-05-21 CVE Numbers: CVE-2012-2134 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) 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. SL6: i386 bind-dyndb-ldap-0.2.0-7.el6_2.1.i686.rpm bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.i686.rpm x86_64 bind-dyndb-ldap-0.2.0-7.el6_2.1.x86_64.rpm bind-dyndb-ldap-debuginfo-0.2.0-7.el6_2.1.x86_64.rpm - Scientific Linux Development Team


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