Privilege escalation in Clusterlabs Hawk
CVE-2021-3020
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.
Vulnerability class: Privilege Escalation
EPSS: 0.010 (59.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Clusterlabs Hawk
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
- cve@mitre.org (Permissions Required, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3020?
- CVE-2021-3020 is a high-severity vulnerability in Clusterlabs Hawk, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2022-08-26.
- How severe is CVE-2021-3020?
- High severity. CVSS v3 base score is 8.8 out of 10.