CentOS Errata and Security Advisory CESA-2013:0689
The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.
A denial of service flaw was found in the libdns library. A remote attacker could 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, or possibly crash. (CVE-2013-2266)
Note: This update disables the syntax checking of NAPTR (Naming Authority Pointer) resource records.
This update also fixes the following bug:
All bind users are advised to upgrade to these updated packages, which contain patches to correct these issues. After installing the update, the BIND daemon (named) will be restarted automatically.
Merged security bulletin from advisories: http://lists.centos.org/pipermail/centos-announce/2013-March/019672.html
Affected packages: bind bind-chroot bind-devel bind-libs bind-sdb bind-utils
Upstream details at: https://rhn.redhat.com/errata/RHSA-2013-0689.html