What is CVE-2021-4406?

CVE-2021-4406 is a critical-severity vulnerability in Osnexus Quantastor, classified under Command Injection. CVSS score: 9.1/10. Published 2023-07-10.

How severe is CVE-2021-4406?

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

RCE in Osnexus Quantastor

CVE-2021-4406

An authenticated attacker is able to create alerts that trigger a stored XSS attack. POC * go to the alert manager * open the ITSM tab * add a webhook with the URL/service token value ' -h && id | tee /tmp/ttttttddddssss #'…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.002 (38.7th 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-77 — Command Injection

References

csirt.divd.nl/DIVD-2021-00020/ (third-party-advisory)
www.osnexus.com/products/software-defined-storage (product)
csirt.divd.nl/CVE-2021-4406 (third-party-advisory, exploit, technical-description)

Frequently asked questions

What is CVE-2021-4406?: CVE-2021-4406 is a critical-severity vulnerability in Osnexus Quantastor, classified under Command Injection. CVSS score: 9.1/10. Published 2023-07-10.
How severe is CVE-2021-4406?: Critical severity. CVSS v3 base score is 9.1 out of 10.