Debian update for xorg-server

Published: 2020-12-06

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-14360 CVE-2020-25712
CWE-ID	CWE-125 CWE-122
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	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 read

EUVDB-ID: #VU48758

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14360

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing XkbSetMap requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update xorg-server package to version 2:1.20.4-1+deb10u2.

Vulnerable software versions

xorg-server (Debian package): 1.20.4-1+deb10u1

External links

http://www.debian.org/security/2020/dsa-4803

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) Heap-based buffer overflow

EUVDB-ID: #VU48759