CVE-2021-3020: An issue was discovered in ClusterLabs Hawk (aka HA Web Konsole) through 2.3.0-15

Q: How do I fix CVE-2021-3020?

hawk: upgrade to newer than 2.3.0-15. Exact commands for each OS are on this page.

Q: Is CVE-2021-3020 being exploited?

CVE-2021-3020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-3020 affect?

CVE-2021-3020 affects hawk. Severity is high (CVSS 8.8). 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 c

This month

HIGH 8.8UPGRADE

CVE-2021-3020 is a high-severity flaw (CVSS 8.8) affecting hawk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-269
Published	2022-08-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: clusterlabs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-08-26 00:15 UTCPublished CVE record published
2026-06-17 04:04 UTCUpdated Record last modified

clusterlabs hawk UPGRADE

Affected: <= 2.3.0-15

Fixed in: newer than 2.3.0-15

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy hawk || rpm -q hawk || hawk --version

2. UPGRADE to newer than 2.3.0-15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hawk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hawk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-3020?

hawk: upgrade to newer than 2.3.0-15. Exact commands for each OS are on this page.

Is CVE-2021-3020 being exploited?

CVE-2021-3020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-3020 affect?

CVE-2021-3020 affects hawk. Severity is high (CVSS 8.8). 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 c

How urgent is CVE-2021-3020?

Priority 48/100. High severity

Related CVEs

CVE-2023-26219 HIGH 7.4 UPGRADE UPGRADE The Hawk Console and Hawk Agent components of TIBCO Software Inc.'s TIBCO Hawk, TIBCO Hawk Distribution for TI
CVE-2022-41564 MEDIUM 6.8 UPGRADE UPGRADE The Hawk Console component of TIBCO Software Inc.'s TIBCO Hawk and TIBCO Operational Intelligence Hawk RedTail
CVE-2022-29167 HIGH 7.4 UPGRADE Hawk is an HTTP authentication scheme providing mechanisms for making authenticated HTTP requests with partial
CVE-2020-35458 CRITICAL 9.8 DOWNGRADE An issue was discovered in ClusterLabs Hawk 2.x through 2.3.0-x
CVE-2016-2515 HIGH 7.5 DOWNGRADE Hawk before 3.1.3 and 4.x before 4.1.1 allow remote attackers to cause a denial of service (CPU consumption or

References

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