CVE-2009-0758

Name	CVE-2009-0758
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-2086-1
Debian Bugs	517683

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
avahi (PTS)	jessie, jessie (lts)	0.6.31-5+deb8u2	fixed
	stretch (security)	0.6.32-2+deb9u1	fixed
	stretch (lts), stretch	0.6.32-2+deb9u2	fixed
	buster (security), buster, buster (lts)	0.7-4+deb10u3	fixed
	bullseye	0.8-5+deb11u2	fixed
	bookworm	0.8-10	fixed
	sid, trixie	0.8-13	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
avahi	source	lenny	0.6.23-3lenny2		DSA-2086-1
avahi	source	(unstable)	0.6.24-3	low		517683

[etch] - avahi <no-dsa> (Minor issue)
reflector is off by default