(RHSA-2011:0406) Moderate: quagga security update

Quagga is a TCP/IP based routing software suite. The Quagga bgpd daemon
implements the BGP (Border Gateway Protocol) routing protocol.

A denial of service flaw was found in the way the Quagga bgpd daemon
processed certain route metrics information. A BGP message with a
specially-crafted path limit attribute would cause the bgpd daemon to reset
its session with the peer through which this message was received.
(CVE-2010-1675)

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon
processed malformed route extended communities attributes. A configured BGP
peer could crash bgpd on a target system via a specially-crafted BGP
message. (CVE-2010-1674)

Users of quagga should upgrade to these updated packages, which contain
backported patches to correct these issues. After installing the updated
packages, the bgpd daemon must be restarted for the update to take effect.