CVE-2023-6816

CVE Details

Release Date:	2024-01-16
Impact:	Important	What is this?

Description

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

See more information about CVE-2023-6816 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:	9.8
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
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-2024-0629	2024-02-01
Oracle Linux version 7 (xorg-x11-server)	ELSA-2024-0320	2024-01-22
Oracle Linux version 8 (tigervnc)	ELSA-2024-0607	2024-01-31
Oracle Linux version 8 (xorg-x11-server-Xwayland)	ELSA-2024-2996	2024-05-23
Oracle Linux version 9 (tigervnc)	ELSA-2024-0557	2024-01-31
Oracle Linux version 9 (xorg-x11-server)	ELSA-2024-2169	2024-05-02
Oracle Linux version 9 (xorg-x11-server-Xwayland)	ELSA-2024-2170	2024-05-02