avahi security update

CentOS Errata and Security Advisory CESA-2009:0013

Avahi is an implementation of the DNS Service Discovery and Multicast DNS
specifications for Zeroconf Networking. It facilitates service discovery on
a local network. Avahi and Avahi-aware applications allow you to plug your
computer into a network and, with no configuration, view other people to
chat with, see printers to print to, and find shared files on other computers.

Hugo Dias discovered a denial of service flaw in avahi-daemon. A remote
attacker on the same local area network (LAN) could send a
specially-crafted mDNS (Multicast DNS) packet that would cause avahi-daemon
to exit unexpectedly due to a failed assertion check. (CVE-2008-5081)

All users are advised to upgrade to these updated packages, which contain a
backported patch which resolves this issue. After installing the update,
avahi-daemon will be restarted automatically.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2009-January/077704.html
https://lists.centos.org/pipermail/centos-announce/2009-January/077705.html

Affected packages:
avahi
avahi-compat-howl
avahi-compat-howl-devel
avahi-compat-libdns_sd
avahi-compat-libdns_sd-devel
avahi-devel
avahi-glib
avahi-glib-devel
avahi-qt3
avahi-qt3-devel
avahi-tools

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:0013