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.
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MLIST:[oss-security] 20090302 CVE id request: avahi
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