SUSE update for xorg-x11-server

1) Integer underflow

EUVDB-ID: #VU52197

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3472

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

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

The vulnerability exists due to integer underflow within the XChangeFeedbackControl() function. A local user can run a specially crafted program to trigger integer underflow and escalate privileges on the system.

Mitigation

Update the affected package xorg-x11-server to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE OpenStack Cloud: 8

xorg-x11-server-extra-debuginfo: before 7.6_1.18.3-76.40.1

xorg-x11-server-extra: before 7.6_1.18.3-76.40.1

xorg-x11-server-debugsource: before 7.6_1.18.3-76.40.1

xorg-x11-server-debuginfo: before 7.6_1.18.3-76.40.1

xorg-x11-server: before 7.6_1.18.3-76.40.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211187-1/

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.