CVE-2009-0758 Information

Description

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683 http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00000.html http://secunia.com/advisories/38420 http://www.debian.org/security/2010/dsa-2086 http://www.mandriva.com/security/advisories?name=MDVSA-2009:076 http://www.openwall.com/lists/oss-security/2009/03/02/1 http://www.securityfocus.com/bid/33946