CVE-2016-2774

Name	CVE-2016-2774
Description	ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2003-1
Debian Bugs	817158

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
	forky, sid, trixie	4.4.3-P1-8	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	jessie	4.3.1-6+deb8u4		DLA-2003-1
isc-dhcp	source	(unstable)	4.3.4-1			817158

Notes

[wheezy] - isc-dhcp <no-dsa> (Minor issue)
https://kb.isc.org/article/AA-01354
https://gitlab.isc.org/isc-projects/dhcp/-/commit/0b209ea5cc333255e055113fa2ad636dda681a21