CVE-2012-3955

Name	CVE-2012-3955
Description	ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.
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-2551-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
isc-dhcp (PTS)	bullseye	4.4.1-2.3+deb11u2	fixed
	bullseye (security)	4.4.1-2.3+deb11u1	fixed
	bookworm	4.4.3-P1-2	fixed
	sid, trixie	4.4.3-P1-5	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
isc-dhcp	source	squeeze	4.1.1-P1-15+squeeze8		DSA-2551-1
isc-dhcp	source	wheezy	4.2.2.dfsg.1-5+deb70u1
isc-dhcp	source	(unstable)	4.2.4-2