Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
{ "ubuntu_priority": "medium", "availability": "No subscription required", "binaries": [ { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libpam-smbpass", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libpam-smbpass-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libparse-pidl-perl-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbsharemodes-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbsharemodes-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbsharemodes0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libsmbsharemodes0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libwbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "python-samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dbg", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-doc", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.19" } ] }
{ "ubuntu_priority": "medium", "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libparse-pidl-perl-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libsmbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libwbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dbg", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.18" } ] }
{ "ubuntu_priority": "medium", "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libsmbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libwbclient0", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "python-samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "python-samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "registry-tools", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-common", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-libs", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "smbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5" } ] }