What is CVE-2021-31523?

CVE-2021-31523 is a high-severity vulnerability in Xscreensaver Project, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-04-21.

How severe is CVE-2021-31523?

High severity. CVSS v3 base score is 7.8 out of 10.

Privilege escalation in Xscreensaver Project

CVE-2021-31523

The Debian xscreensaver 5.42+dfsg1-1 package for XScreenSaver has cap_net_raw enabled for the /usr/libexec/xscreensaver/sonar file, which allows local users to gain privileges because this is arguably incompatible with the design of the Mesa 3D Graphics library dependency.

Vulnerability class: Privilege Escalation

EPSS: 0.003 (24.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Xscreensaver_project Xscreensaver — versions 5.42\+dfsg1-1
N/a — versions n/a

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

cve@mitre.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-31523?: CVE-2021-31523 is a high-severity vulnerability in Xscreensaver Project, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-04-21.
How severe is CVE-2021-31523?: High severity. CVSS v3 base score is 7.8 out of 10.