CVE-2023-1393

2023-03-3021:15:06

Debian Security Bug Tracker

security-tracker.debian.org

x.org server

overlay window

use-after-free

local privilege escalation

compscreen structure

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.0004 Low

EPSS

Percentile

16.1%

JSON

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.

OSVersionArchitecturePackageVersionFilename
Debian12allxorg-server< 2:21.1.7-2xorg-server_2:21.1.7-2_all.deb
Debian11allxorg-server< 2:1.20.11-1+deb11u6xorg-server_2:1.20.11-1+deb11u6_all.deb
Debian999allxorg-server< 2:21.1.7-2xorg-server_2:21.1.7-2_all.deb
Debian13allxorg-server< 2:21.1.7-2xorg-server_2:21.1.7-2_all.deb
Debian12allxwayland< 2:22.1.9-1xwayland_2:22.1.9-1_all.deb
Debian999allxwayland< 2:22.1.9-1xwayland_2:22.1.9-1_all.deb
Debian13allxwayland< 2:22.1.9-1xwayland_2:22.1.9-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	xorg-server	< 2:21.1.7-2	xorg-server_2:21.1.7-2_all.deb
Debian	11	all	xorg-server	< 2:1.20.11-1+deb11u6	xorg-server_2:1.20.11-1+deb11u6_all.deb
Debian	999	all	xorg-server	< 2:21.1.7-2	xorg-server_2:21.1.7-2_all.deb
Debian	13	all	xorg-server	< 2:21.1.7-2	xorg-server_2:21.1.7-2_all.deb
Debian	12	all	xwayland	< 2:22.1.9-1	xwayland_2:22.1.9-1_all.deb
Debian	999	all	xwayland	< 2:22.1.9-1	xwayland_2:22.1.9-1_all.deb
Debian	13	all	xwayland	< 2:22.1.9-1	xwayland_2:22.1.9-1_all.deb