CVE-2023-34966

CVE Details

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

Description

An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.

See more information about CVE-2023-34966 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:	7.5
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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:	High

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