CVE-2023-0494

CVE Details

Release Date:	2023-03-27
Impact:	None	What is this?

Description

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.

See more information about CVE-2023-0494 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:	7.8
Vector String:	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (tigervnc)	ELSA-2023-0675	2023-02-09
Oracle Linux version 7 (xorg-x11-server)	ELSA-2023-0675	2023-02-09
Oracle Linux version 8 (tigervnc)	ELSA-2023-0662	2023-02-08
Oracle Linux version 8 (xorg-x11-server)	ELSA-2023-2806	2023-05-24
Oracle Linux version 8 (xorg-x11-server-Xwayland)	ELSA-2023-2805	2023-05-24
Oracle Linux version 9 (tigervnc)	ELSA-2023-0622	2023-02-08
Oracle Linux version 9 (xorg-x11-server)	ELSA-2023-2248	2023-05-15
Oracle Linux version 9 (xorg-x11-server-Xwayland)	ELSA-2023-2249	2023-05-15