CVE-2023-34967

CVE Details

Release Date:	2023-07-19
Impact:	Moderate	What is this?

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.

See more information about CVE-2023-34967 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.3
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (evolution-mapi)	ELSA-2023-7139	2023-11-18
Oracle Linux version 8 (openchange)	ELSA-2023-7139	2023-11-18
Oracle Linux version 9 (evolution-mapi)	ELSA-2023-6667	2023-11-11
Oracle Linux version 9 (openchange)	ELSA-2023-6667	2023-11-11
Oracle Linux version 9 (samba)	ELSA-2023-6667	2023-11-11