A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libpam-smbpass" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libpam-smbpass-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libparse-pidl-perl" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libparse-pidl-perl-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbclient" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbclient-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbsharemodes-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbsharemodes-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbsharemodes0" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libsmbsharemodes0-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libwbclient-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libwbclient0" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "python-samba" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "python-samba-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "registry-tools" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-common" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dbg" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-doc" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-libs" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "smbclient" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6", "binary_name": "winbind-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "ctdb" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "ctdb-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libparse-pidl-perl" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libparse-pidl-perl-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libsmbclient" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libsmbclient-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libwbclient-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libwbclient0" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "python-samba" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "registry-tools" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-common" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dbg" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dev" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dev-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-libs" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "smbclient" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "winbind" }, { "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.26", "binary_name": "winbind-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "ctdb" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "ctdb-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libparse-pidl-perl" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libsmbclient" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libwbclient0" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "python-samba" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "python-samba-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "registry-tools" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-common" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-dev" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-libs" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "smbclient" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "winbind" }, { "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.16", "binary_name": "winbind-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "ctdb" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "ctdb-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libsmbclient" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libwbclient0" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "python3-samba" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "python3-samba-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "registry-tools" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-common" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-dev" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-libs" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "smbclient" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "winbind" }, { "binary_version": "2:4.11.6+dfsg-0ubuntu1.1", "binary_name": "winbind-dbgsym" } ] }