CVE-2024-21885

2024-01-1600:00:00

ubuntu.com

x.org server

xisenddevicehierarchyevent

heap buffer overflow

application crash

remote code execution

ssh x11 forwarding

xwayland package

CVSS3

7.8

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

AI Score

9.1

Confidence

High

EPSS

Percentile

10.3%

JSON

A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent
function, it is possible to exceed the allocated array length when certain
new device IDs are added to the xXIHierarchyInfo struct. This can trigger a
heap buffer overflow condition, which may lead to an application crash or
remote code execution in SSH X11 forwarding environments.

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

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchxorg-server< 2:1.19.6-1ubuntu4.15+esm4UNKNOWN
ubuntu20.04noarchxorg-server< 2:1.20.13-1ubuntu1~20.04.14UNKNOWN
ubuntu22.04noarchxorg-server< 2:21.1.4-2ubuntu1.7~22.04.7UNKNOWN
ubuntu23.04noarchxorg-server< 2:21.1.7-1ubuntu3.6UNKNOWN
ubuntu23.10noarchxorg-server< 2:21.1.7-3ubuntu2.6UNKNOWN
ubuntu24.04noarchxorg-server< 2:21.1.11-1ubuntu1UNKNOWN
ubuntu14.04noarchxorg-server< 2:1.15.1-0ubuntu2.11+esm9UNKNOWN
ubuntu16.04noarchxorg-server< 2:1.18.4-0ubuntu0.12+esm9UNKNOWN
ubuntu16.04noarchxorg-server-hwe-16.04< anyUNKNOWN
ubuntu18.04noarchxorg-server-hwe-18.04< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	xorg-server	< 2:1.19.6-1ubuntu4.15+esm4	UNKNOWN
ubuntu	20.04	noarch	xorg-server	< 2:1.20.13-1ubuntu1~20.04.14	UNKNOWN
ubuntu	22.04	noarch	xorg-server	< 2:21.1.4-2ubuntu1.7~22.04.7	UNKNOWN
ubuntu	23.04	noarch	xorg-server	< 2:21.1.7-1ubuntu3.6	UNKNOWN
ubuntu	23.10	noarch	xorg-server	< 2:21.1.7-3ubuntu2.6	UNKNOWN
ubuntu	24.04	noarch	xorg-server	< 2:21.1.11-1ubuntu1	UNKNOWN
ubuntu	14.04	noarch	xorg-server	< 2:1.15.1-0ubuntu2.11+esm9	UNKNOWN
ubuntu	16.04	noarch	xorg-server	< 2:1.18.4-0ubuntu0.12+esm9	UNKNOWN
ubuntu	16.04	noarch	xorg-server-hwe-16.04	< any	UNKNOWN
ubuntu	18.04	noarch	xorg-server-hwe-18.04	< any	UNKNOWN