All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldbqsort() and dnsname_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.
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{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libparse-pidl-perl-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libsmbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libwbclient-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dbg", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dev-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.24" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "ctdb-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libnss-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libpam-winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libsmbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libsmbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libwbclient0", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "libwbclient0-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "python-samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "python-samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "registry-tools", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "registry-tools-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-common", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-common-bin-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-dsdb-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-libs", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-libs-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-testsuite-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "samba-vfs-modules-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "smbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "smbclient-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" }, { "binary_name": "winbind-dbgsym", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.14" } ], "availability": "No subscription required" }