The Berkeley Internet Name Domain (BIND) is an implementation of theDomain Name System (DNS) protocols. BIND includes a DNS server (named); aresolver library (routines for applications to use when interfacing withDNS); and tools for verifying that the DNS server is operating correctly.A denial of service flaw was found in the libdns library. A remote attackercould use this flaw to send a specially-crafted DNS query to named that,when processed, would cause named to use an excessive amount of memory, orpossibly crash. (CVE-2013-2266)Note: This update disables the syntax checking of NAPTR (Naming AuthorityPointer) resource records.All bind97 users are advised to upgrade to these updated packages, whichcontain a patch to correct this issue. After installing the update, theBIND daemon (named) will be restarted automatically.