A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.
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{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libparse-pidl-perl-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libsmbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libwbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dbg", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.32" } ], "ubuntu_priority": "medium" }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libsmbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libwbclient0", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "python-samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "python-samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "registry-tools", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-common", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-libs", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "smbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.21" } ], "ubuntu_priority": "medium" }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libsmbclient", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libwbclient0", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "python3-samba", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "python3-samba-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "registry-tools", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-common", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-dev", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-libs", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "smbclient", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "winbind", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.11.6+dfsg-0ubuntu1.6" } ], "ubuntu_priority": "medium" }