What is CVE-2021-42079?

CVE-2021-42079 is a medium-severity vulnerability in Osnexus Quantastor, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.2/10. Published 2023-07-10.

How severe is CVE-2021-42079?

Medium severity. CVSS v3 base score is 6.2 out of 10.

SSRF in Osnexus Quantastor

CVE-2021-42079

An authenticated administrator is able to prepare an alert that is able to execute an SSRF attack. This is exclusively with POST requests. POC Step 1: Prepare the SSRF with a request like this: GET /qstorapi/alertConfigSet?senderEmailAd…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.001 (20.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N.

Affected products

Osnexus Quantastor — versions 0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

www.wbsec.nl/osnexus (third-party-advisory, technical-description)
cisrt.divd.nl/DIVD-2021-00020/ (third-party-advisory, exploit, technical-description)
www.osnexus.com/products/software-defined-storage (product)
csirt.divd.nl/CVE-2021-42079 (third-party-advisory)

Frequently asked questions

What is CVE-2021-42079?: CVE-2021-42079 is a medium-severity vulnerability in Osnexus Quantastor, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.2/10. Published 2023-07-10.
How severe is CVE-2021-42079?: Medium severity. CVSS v3 base score is 6.2 out of 10.