CVE-2023-34967

Published: Jul 20, 2023

Modified: Nov 20, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:4.18.6-1.el8 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:4.18.6-1.el8 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	unaffected `0:4.15.5-15.el8_6 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected `0:4.17.5-5.el8_8 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:4.18.6-100.el9 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:4.18.6-100.el9 - < *`
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8	unaffected `0:4.15.5-15.el8_6 - < *`
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 7	All versions
Red Hat	Red Hat Storage 3	All versions