A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-libs": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "registry-tools": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbsharemodes0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-doc": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbsharemodes0": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "python-samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbsharemodes-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbsharemodes-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "python-samba": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libpam-smbpass-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-common": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "smbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "samba-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8", "libpam-smbpass": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-libs": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "registry-tools": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "python-samba": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "ctdb": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-common": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "smbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "samba-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.16.04.29", "ctdb-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.29" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-libs": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "registry-tools": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-common-bin": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libwbclient0-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-dsdb-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libpam-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libnss-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-vfs-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "python-samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-common-bin-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-testsuite": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "smbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libsmbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libwbclient0": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libsmbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "python-samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-dsdb-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "registry-tools-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-vfs-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "ctdb": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libnss-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libsmbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-libs-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-testsuite-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-common": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libpam-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "smbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "samba-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "libparse-pidl-perl": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18", "ctdb-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.18" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.11.6+dfsg-0ubuntu1.4", "samba-libs": "2:4.11.6+dfsg-0ubuntu1.4", "registry-tools": "2:4.11.6+dfsg-0ubuntu1.4", "samba-common-bin": "2:4.11.6+dfsg-0ubuntu1.4", "libwbclient0-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-dsdb-modules-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "libpam-winbind-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "libnss-winbind-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "python3-samba-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "winbind": "2:4.11.6+dfsg-0ubuntu1.4", "samba-vfs-modules": "2:4.11.6+dfsg-0ubuntu1.4", "samba-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-common-bin-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-testsuite": "2:4.11.6+dfsg-0ubuntu1.4", "smbclient-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "libsmbclient": "2:4.11.6+dfsg-0ubuntu1.4", "samba": "2:4.11.6+dfsg-0ubuntu1.4", "libsmbclient-dev": "2:4.11.6+dfsg-0ubuntu1.4", "libwbclient0": "2:4.11.6+dfsg-0ubuntu1.4", "samba-dsdb-modules": "2:4.11.6+dfsg-0ubuntu1.4", "python3-samba": "2:4.11.6+dfsg-0ubuntu1.4", "samba-vfs-modules-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "registry-tools-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "ctdb": "2:4.11.6+dfsg-0ubuntu1.4", "libnss-winbind": "2:4.11.6+dfsg-0ubuntu1.4", "libsmbclient-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-libs-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "winbind-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-testsuite-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4", "samba-common": "2:4.11.6+dfsg-0ubuntu1.4", "libpam-winbind": "2:4.11.6+dfsg-0ubuntu1.4", "smbclient": "2:4.11.6+dfsg-0ubuntu1.4", "samba-dev": "2:4.11.6+dfsg-0ubuntu1.4", "ctdb-dbgsym": "2:4.11.6+dfsg-0ubuntu1.4" } ] }