What is CVE-2021-42081?

CVE-2021-42081 is a critical-severity vulnerability in Osnexus Quantastor, classified under OS Command Injection. CVSS score: 9.1/10. Published 2023-07-10.

How severe is CVE-2021-42081?

Critical severity. CVSS v3 base score is 9.1 out of 10.

RCE in Osnexus Quantastor

CVE-2021-42081

An authenticated administrator is allowed to remotely execute arbitrary shell commands via the API. POC http://<IP_ADDRESS>/qstorapi/storageSystemModify?storageSystem=&newName=quantastor&newDescription=;ls${IFS}-al&newLocation=4&newEnclos…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (24.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Osnexus Quantastor — versions 0

Weakness classification (CWE)

CWE-78 — OS Command Injection

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-2021-42081 (third-party-advisory, technical-description, exploit)

Frequently asked questions

What is CVE-2021-42081?: CVE-2021-42081 is a critical-severity vulnerability in Osnexus Quantastor, classified under OS Command Injection. CVSS score: 9.1/10. Published 2023-07-10.
How severe is CVE-2021-42081?: Critical severity. CVSS v3 base score is 9.1 out of 10.