All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).
{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libparse-pidl-perl-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libsmbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libwbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dbg", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.25" } ], "ubuntu_priority": "low" }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libsmbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libwbclient0", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "python-samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "python-samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "registry-tools", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-common", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-libs", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "smbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.15" } ], "ubuntu_priority": "low" }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libsmbclient", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libwbclient0", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "python3-samba", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "python3-samba-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "registry-tools", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-common", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-dev", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-libs", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "smbclient", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "winbind", "binary_version": "2:4.11.5+dfsg-1ubuntu1" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.11.5+dfsg-1ubuntu1" } ], "ubuntu_priority": "low" }