bind security update

CentOS Errata and Security Advisory CESA-2012:1549

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. DNS64 is
used to automatically generate DNS records so IPv6 based clients can access
IPv4 systems through a NAT64 server.

A flaw was found in the DNS64 implementation in BIND. If a remote attacker
sent a specially-crafted query to a named server, named could exit
unexpectedly with an assertion failure. Note that DNS64 support is not
enabled by default. (CVE-2012-5688)

Users of bind are advised to upgrade to these updated packages, which
correct this issue. After installing the update, the BIND daemon (named)
will be restarted automatically.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2012-December/081187.html

Affected packages:
bind
bind-chroot
bind-devel
bind-libs
bind-sdb
bind-utils

Upstream details at:
https://access.redhat.com/errata/RHSA-2012:1549