RHSA-2011:0436: Moderate: avahi security update

First published: Tue Apr 12 2011(Updated: )

Avahi is an implementation of the DNS Service Discovery and Multicast DNS<br>specifications for Zero Configuration Networking. It facilitates service<br>discovery on a local network. Avahi and Avahi-aware applications allow you<br>to plug your computer into a network and, with no configuration, view other<br>people to chat with, view printers to print to, and find shared files on<br>other computers.<br>A flaw was found in the way the Avahi daemon (avahi-daemon) processed<br>Multicast DNS (mDNS) packets with an empty payload. An attacker on the<br>local network could use this flaw to cause avahi-daemon on a target system<br>to enter an infinite loop via an empty mDNS UDP packet. (CVE-2011-1002)<br>All users are advised to upgrade to these updated packages, which contain<br>a backported patch to correct this issue. After installing the update,<br>avahi-daemon will be restarted automatically.<br>

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