The Samba vfsfruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfsfruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "high", "binaries": [ { "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-libs": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "registry-tools": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbsharemodes0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-doc": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbsharemodes0": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "python-samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbsharemodes-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbsharemodes-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "python-samba": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libpam-smbpass-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-common": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "smbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "samba-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12", "libpam-smbpass": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12" } ] }
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "high", "binaries": [ { "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-libs": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "registry-tools": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "python-samba": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "ctdb": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-common": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "smbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "samba-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1", "ctdb-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "high", "binaries": [ { "libwbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-libs": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "registry-tools": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-common-bin": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libwbclient0-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-dsdb-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libpam-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libnss-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-vfs-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "python-samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-common-bin-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-testsuite": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "smbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libsmbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libwbclient0": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libsmbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "python-samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-dsdb-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "registry-tools-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-vfs-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "ctdb": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libnss-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libsmbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-libs-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-testsuite-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-common": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libpam-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "smbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "samba-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "libparse-pidl-perl": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28", "ctdb-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.28" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "high", "binaries": [ { "libwbclient-dev": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-libs": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "registry-tools": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-common-bin": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libwbclient0-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-dsdb-modules-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libpam-winbind-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libnss-winbind-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "python3-samba-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "winbind": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-vfs-modules": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-common-bin-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-testsuite": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "smbclient-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libsmbclient": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libsmbclient-dev": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libwbclient0": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-dsdb-modules": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "python3-samba": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-vfs-modules-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "registry-tools-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "ctdb": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libnss-winbind": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libsmbclient-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-libs-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "winbind-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-testsuite-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-common": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "libpam-winbind": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "smbclient": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "samba-dev": "2:4.13.17~dfsg-0ubuntu0.21.04.1", "ctdb-dbgsym": "2:4.13.17~dfsg-0ubuntu0.21.04.1" } ] }