CVE-2023-34967 Information

Description

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.

Reference

https://access.redhat.com/security/cve/CVE-2023-34967 https://www.samba.org/samba/security/CVE-2023-34967.html https://bugzilla.redhat.com/show_bug.cgi?id=2222794