Arbitrary file upload in ownCloud Files Antivirus
CVE-2021-33828
The files_antivirus component before 1.0.0 for ownCloud mishandles the protection mechanism by which malicious files (that have been uploaded to a public share) are supposed to be deleted upon detection.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (65.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.7% 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
Weakness classification (CWE)
References
- doc.owncloud.com/server/admin_manual/release_notes.html (Release Notes, Vendor Advisory)
- owncloud.com/security-advisories/cve-2021-33828/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-33828?
- CVE-2021-33828 is a high-severity vulnerability in ownCloud Files Antivirus, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2022-01-15.
- How severe is CVE-2021-33828?
- High severity. CVSS v3 base score is 8.8 out of 10.