CVE-2009-0790

Name	CVE-2009-0790
Description	The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14, and Strongswan 4.2 before 4.2.14 and 2.8 before 2.8.9, allows remote attackers to cause a denial of service (daemon crash and restart) via a crafted (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) IPsec IKE Notification message that triggers a NULL pointer dereference related to inconsistent ISAKMP state and the lack of a phase2 state association in DPD.
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-1759-1, DSA-1760-1
Debian Bugs	521949, 521950

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
strongswan (PTS)	jessie, jessie (lts)	5.2.1-6+deb8u11	fixed
	stretch (security)	5.5.1-4+deb9u6	fixed
	stretch (lts), stretch	5.5.1-4+deb9u7	fixed
	buster (security), buster, buster (lts)	5.7.2-1+deb10u4	fixed
	bullseye (security), bullseye	5.9.1-1+deb11u4	fixed
	bookworm (security), bookworm	5.9.8-5+deb12u1	fixed
	sid, trixie	5.9.13-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openswan	source	etch	1:2.4.6+dfsg.2-1.1+etch1		DSA-1760-1
openswan	source	lenny	1:2.4.12+dfsg-1.3+lenny1		DSA-1760-1
openswan	source	(unstable)	1:2.6.21+dfsg-1	medium		521949
strongswan	source	etch	2.8.0+dfsg-1+etch1		DSA-1759-1
strongswan	source	lenny	4.2.4-5+lenny1		DSA-1759-1
strongswan	source	(unstable)	4.2.14-1	medium		521950