bind97 security update

CentOS Errata and Security Advisory CESA-2011:0845

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.

An off-by-one flaw was found in the way BIND processed negative responses
with large resource record sets (RRSets). An attacker able to send
recursive queries to a BIND server that is configured as a caching
resolver could use this flaw to cause named to exit with an assertion
failure. (CVE-2011-1910)

All BIND users are advised to upgrade to these updated packages, which
resolve 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/2011-May/079761.html
https://lists.centos.org/pipermail/centos-announce/2011-May/079762.html

Affected packages:
bind97
bind97-chroot
bind97-devel
bind97-libs
bind97-utils

Upstream details at:
https://access.redhat.com/errata/RHSA-2011:0845