(RHSA-2009:0020) Moderate: bind security update

BIND (Berkeley Internet Name Domain) is an implementation of the DNS
(Domain Name System) protocols.

A flaw was discovered in the way BIND checked the return value of the
OpenSSL DSA_do_verify function. On systems using DNSSEC, a malicious zone
could present a malformed DSA certificate and bypass proper certificate
validation, allowing spoofing attacks. (CVE-2009-0025)

For users of Red Hat Enterprise Linux 3 this update also addresses a bug
which can cause BIND to occasionally exit with an assertion failure.

All BIND users are advised to upgrade to the updated package, which
contains a backported patch to resolve this issue. After installing the
update, BIND daemon will be restarted automatically.