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CVE-2021-34557

Description

XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs.

Risk Information

Base Score
4.6
MODERATE
Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.066

Associated Vulnerability

VulnerabilityOS Platform
SUSE-SU-2022:2642-1(SUSE Linux Enterprise Server 12-SP5 ) xscreensaver-5.22-8.3.1.x86_64.rpmLinux
SUSE-SU-2022:2642-1(SUSE Linux Enterprise Server 12-SP5 ) xscreensaver-data-5.22-8.3.1.x86_64.rpmLinux
SUSE-SU-2022:2642-1(SUSE Linux Enterprise Server 12-SP5 ) xscreensaver-data-debuginfo-5.22-8.3.1.x86_64.rpmLinux
SUSE-SU-2022:2642-1(SUSE Linux Enterprise Server 12-SP5 ) xscreensaver-debuginfo-5.22-8.3.1.x86_64.rpmLinux
SUSE-SU-2022:2642-1(SUSE Linux Enterprise Server 12-SP5 ) xscreensaver-debugsource-5.22-8.3.1.x86_64.rpmLinux
SUSE-SU-2022:2641-1(SUSE Linux Enterprise Module for Basesystem 15-SP3 ) xscreensaver-5.44-150000.5.6.1.x86_64.rpmLinux
SUSE-SU-2022:2641-1(SUSE Linux Enterprise Module for Basesystem 15-SP3 ) xscreensaver-data-5.44-150000.5.6.1.x86_64.rpmLinux
SUSE-SU-2022:2641-1(SUSE Linux Enterprise Module for Basesystem 15-SP3 ) xscreensaver-lang-5.44-150000.5.6.1.noarch.rpmLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234