Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU66593
Risk: Low
CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-34557
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows an attacker to escalate privileges on the system.
The vulnerability exists due to a boundary error within the update_screen_layout() function. An attacker with physical access to the system can trigger memory corruption and bypass the standard screen lock authentication mechanism.
MitigationUpdate the affected package xscreensaver to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Storage: 7.1
SUSE Manager Retail Branch Server: 4.2
SUSE Linux Enterprise Desktop: 15-SP3
openSUSE Leap: 15.3
SUSE Manager Server: 4.2
SUSE Manager Proxy: 4.2
SUSE Linux Enterprise Server for SAP Applications: 15-SP3
SUSE Linux Enterprise Server: 15-SP3
SUSE Linux Enterprise High Performance Computing: 15-SP3
SUSE Linux Enterprise Module for Basesystem: 15-SP3
xscreensaver-lang: before 5.44-150000.5.6.1
xscreensaver-debugsource: before 5.44-150000.5.6.1
xscreensaver-debuginfo: before 5.44-150000.5.6.1
xscreensaver-data-extra-debuginfo: before 5.44-150000.5.6.1
xscreensaver-data-extra: before 5.44-150000.5.6.1
xscreensaver-data-debuginfo: before 5.44-150000.5.6.1
xscreensaver-data: before 5.44-150000.5.6.1
xscreensaver: before 5.44-150000.5.6.1
CPE2.3http://www.suse.com/support/update/announcement/2022/suse-su-20222641-1/
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.