UBUNTU-CVE-2023-34967

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UBUNTU-CVE-2023-34967

Summary:

Details: 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 dalloc_value_for_key() function, which returns the object associated with a key, a caller may trigger a crash in talloc_get_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.

References: https://ubuntu.com/security/CVE-2023-34967, https://www.samba.org/samba/security/CVE-2023-34967.html, https://ubuntu.com/security/notices/USN-6238-1, https://www.cve.org/CVERecord?id=CVE-2023-34967