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.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client-dbg" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client-dbgsym" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client-noddns" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client-udeb" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-client-udeb-dbgsym" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-common-dbgsym" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-relay-dbg" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-relay-dbgsym" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-server-dbg" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-server-dbgsym" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-server-ldap" }, { "binary_version": "4.2.4-7ubuntu12.12", "binary_name": "isc-dhcp-server-ldap-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client-ddns-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client-udeb" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-client-udeb-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-common-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-dbg" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-dev-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-relay-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-server-dbgsym" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-server-ldap" }, { "binary_version": "4.3.3-5ubuntu12.9", "binary_name": "isc-dhcp-server-ldap-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-client-dbgsym" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-client-ddns-dbgsym" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-client-udeb" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-relay-dbgsym" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-server-dbgsym" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-server-ldap" }, { "binary_version": "4.3.5-3ubuntu2", "binary_name": "isc-dhcp-server-ldap-dbgsym" } ] }