CVE-2021-3020

Name: CVE-2021-3020
Creator: NVD / NIST
Published: 2022-08-26T00:15:08.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2021-3020 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in ClusterLabs Hawk (aka HA Web Konsole) through 2.3.0-15. It ships the binary hawk_invoke (built from tools/hawk_invoke.c), intended to be used as a setuid program. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

An issue was discovered in ClusterLabs Hawk (aka HA Web Konsole) through 2.3.0-15. It ships the binary hawk_invoke (built from tools/hawk_invoke.c), intended to be used as a setuid program. This allows the hacluster user to invoke certain commands as root (with an attempt to limit this to safe combinations). This user is able to execute an interactive "shell" that isn't limited to the commands specified in hawk_invoke, allowing escalation to root.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.99%

58.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-269

Affected Software

Vendor	Product	Versions
Clusterlabs	Hawk	<= 2.3.0-15

References

https://bugzilla.suse.com/show_bug.cgi?id=1180571Permissions Required
https://github.com/ClusterLabs/crmsh/commit/c538024b8ebd138dc373b005189471d9b77e9c82Patch, Third Party Advisory
https://github.com/ClusterLabs/hawk/releasesRelease Notes, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1180571Permissions Required
https://github.com/ClusterLabs/crmsh/commit/c538024b8ebd138dc373b005189471d9b77e9c82Patch, Third Party Advisory
https://github.com/ClusterLabs/hawk/releasesRelease Notes, Third Party Advisory

Timeline

Published: Aug 26, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3020?

How severe is CVE-2021-3020?

CVE-2021-3020 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3020?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3020?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST