CVE-2022-46341

2022-12-1400:00:00

ubuntu.com

x.org

vulnerability

local privileges elevation

remote code execution

xipassiveungrab

out-of-bounds memory

x server

ssh x forwarding

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.104

Percentile

95.1%

JSON

A vulnerability was found in X.Org. This security flaw occurs because the
handler for the XIPassiveUngrab request accesses out-of-bounds memory when
invoked with a high keycode or button code. This issue can lead to local
privileges elevation on systems where the X server is running privileged
and remote code execution for ssh X forwarding sessions.

Notes

Author	Note
mdeslaur	xorg server is actually the xorg-server package the xorg package only contains docs xwayland package contains parts of xorg-server This is ZDI-CAN-19381

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchxorg-server< 2:1.19.6-1ubuntu4.13UNKNOWN
ubuntu20.04noarchxorg-server< 2:1.20.13-1ubuntu1~20.04.5UNKNOWN
ubuntu22.04noarchxorg-server< 2:21.1.3-2ubuntu2.5UNKNOWN
ubuntu22.10noarchxorg-server< 2:21.1.4-2ubuntu1.3UNKNOWN
ubuntu23.04noarchxorg-server< 2:21.1.5-1ubuntu1UNKNOWN
ubuntu14.04noarchxorg-server< 2:1.15.1-0ubuntu2.11+esm7UNKNOWN
ubuntu16.04noarchxorg-server< 2:1.18.4-0ubuntu0.12+esm5UNKNOWN
ubuntu16.04noarchxorg-server-hwe-16.04< 2:1.19.6-1ubuntu4.1~16.04.6+esm4UNKNOWN
ubuntu18.04noarchxorg-server-hwe-18.04< 2:1.20.8-2ubuntu2.2~18.04.9UNKNOWN
ubuntu22.04noarchxwayland< 2:22.1.1-1ubuntu0.4UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	xorg-server	< 2:1.19.6-1ubuntu4.13	UNKNOWN
ubuntu	20.04	noarch	xorg-server	< 2:1.20.13-1ubuntu1~20.04.5	UNKNOWN
ubuntu	22.04	noarch	xorg-server	< 2:21.1.3-2ubuntu2.5	UNKNOWN
ubuntu	22.10	noarch	xorg-server	< 2:21.1.4-2ubuntu1.3	UNKNOWN
ubuntu	23.04	noarch	xorg-server	< 2:21.1.5-1ubuntu1	UNKNOWN
ubuntu	14.04	noarch	xorg-server	< 2:1.15.1-0ubuntu2.11+esm7	UNKNOWN
ubuntu	16.04	noarch	xorg-server	< 2:1.18.4-0ubuntu0.12+esm5	UNKNOWN
ubuntu	16.04	noarch	xorg-server-hwe-16.04	< 2:1.19.6-1ubuntu4.1~16.04.6+esm4	UNKNOWN
ubuntu	18.04	noarch	xorg-server-hwe-18.04	< 2:1.20.8-2ubuntu2.2~18.04.9	UNKNOWN
ubuntu	22.04	noarch	xwayland	< 2:22.1.1-1ubuntu0.4	UNKNOWN