DescriptionThe DHCPv6 server in ISC DHCP 4.0.x and 4.1.x before 4.1.2-P1, 4.0-ESV and 4.1-ESV before 4.1-ESV-R1, and 4.2.x before 4.2.1b1 allows remote attackers to cause a denial of service (assertion failure and daemon crash) by sending a message over IPv6 for a declined and abandoned address.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)
Debian Bugs611217

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
isc-dhcp (PTS)jessie, jessie (security)4.3.1-6+deb8u3fixed
stretch, stretch (security)4.3.5-3+deb9u1fixed
buster, sid4.3.5-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dhcpsource(unstable)(not affected)
dhcp3source(unstable)(not affected)


- dhcp3 <not-affected> (vuln code introduced in 4.0)
- dhcp <not-affected> (vuln code introduced in 4.0)
maintainer is aware

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