CVE-2023-34966

CVE Details

Release Date:

2023-07-19

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

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	7.5	Base Metrics:	AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access 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

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team