Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0
{ "availability": "No subscription required", "ubuntu_priority": "medium", "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": "medium", "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": "medium", "binaries": [ { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-client-dbgsym" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-client-ddns-dbgsym" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-client-udeb" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-relay-dbgsym" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-server-dbgsym" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-server-ldap" }, { "binary_version": "4.3.5-3ubuntu5", "binary_name": "isc-dhcp-server-ldap-dbgsym" } ] }