Debian update for xorg-server

Published: 2022-08-07

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-2319 CVE-2022-2320
CWE-ID	CWE-787
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Debian Linux Operating systems & Components / Operating system xorg-server (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU65222

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2319

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the ProcXkbSetGeometry request handler of the Xkb extension. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update xorg-server package to version 2:1.20.11-1+deb11u2.

Vulnerable software versions

Debian Linux: All versions

xorg-server (Debian package): before 2:1.20.11-1+deb11u2

External links

http://www.debian.org/security/2022/dsa-5199

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU65223