{"id":"DEBIAN-CVE-2011-4868","details":"The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.","modified":"2026-09-14T06:47:29.337811489Z","published":"2012-01-15T03:55:12.953Z","upstream":["CVE-2011-4868"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2011-4868"}],"affected":[{"package":{"name":"isc-dhcp","ecosystem":"Debian:12","purl":"pkg:deb/debian/isc-dhcp?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.2.dfsg.1-5"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4868.json"}},{"package":{"name":"isc-dhcp","ecosystem":"Debian:13","purl":"pkg:deb/debian/isc-dhcp?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.2.dfsg.1-5"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4868.json"}}],"schema_version":"1.9.0"}