A Type Confusion vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the mdssvc protocol. Due to a lack of type checking in callers of the dallocvalueforkey() function, which returns the object associated with a key, a caller may trigger a crash in tallocget_size() when talloc detects that the passed-in pointer is not a valid talloc pointer. With an RPC worker process shared among multiple client connections, a malicious client or attacker can trigger a process crash in a shared RPC mdssvc worker process, affecting all other clients this worker serves.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-libs": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "registry-tools": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-common-bin": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libwbclient0-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-dsdb-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libpam-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libnss-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "python3-samba-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-vfs-modules": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-common-bin-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-testsuite": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "smbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libsmbclient": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libsmbclient-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libwbclient0": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-dsdb-modules": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "python3-samba": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-vfs-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "registry-tools-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "ctdb": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libnss-winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libsmbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-libs-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-testsuite-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-common": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "libpam-winbind": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "smbclient": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "samba-dev": "2:4.15.13+dfsg-0ubuntu0.20.04.3", "ctdb-dbgsym": "2:4.15.13+dfsg-0ubuntu0.20.04.3" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "libwbclient-dev": "2:4.15.13+dfsg-0ubuntu1.2", "samba-libs": "2:4.15.13+dfsg-0ubuntu1.2", "registry-tools": "2:4.15.13+dfsg-0ubuntu1.2", "samba-common-bin": "2:4.15.13+dfsg-0ubuntu1.2", "libwbclient0-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-dsdb-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "libpam-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "libnss-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "python3-samba-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "winbind": "2:4.15.13+dfsg-0ubuntu1.2", "samba-vfs-modules": "2:4.15.13+dfsg-0ubuntu1.2", "samba-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-common-bin-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-testsuite": "2:4.15.13+dfsg-0ubuntu1.2", "smbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "libsmbclient": "2:4.15.13+dfsg-0ubuntu1.2", "samba": "2:4.15.13+dfsg-0ubuntu1.2", "libsmbclient-dev": "2:4.15.13+dfsg-0ubuntu1.2", "libwbclient0": "2:4.15.13+dfsg-0ubuntu1.2", "samba-dsdb-modules": "2:4.15.13+dfsg-0ubuntu1.2", "python3-samba": "2:4.15.13+dfsg-0ubuntu1.2", "samba-vfs-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "registry-tools-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "ctdb": "2:4.15.13+dfsg-0ubuntu1.2", "libnss-winbind": "2:4.15.13+dfsg-0ubuntu1.2", "libsmbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-libs-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-testsuite-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2", "samba-common": "2:4.15.13+dfsg-0ubuntu1.2", "libpam-winbind": "2:4.15.13+dfsg-0ubuntu1.2", "smbclient": "2:4.15.13+dfsg-0ubuntu1.2", "samba-dev": "2:4.15.13+dfsg-0ubuntu1.2", "ctdb-dbgsym": "2:4.15.13+dfsg-0ubuntu1.2" } ] }