Arbitrary file upload in Fortilogger
CVE-2021-3378
FortiLogger 4.4.2.2 is affected by Arbitrary File Upload by sending a "Content-Type: image/png" header to Config/SaveUploadedHotspotLogoFile and then visiting Assets/temp/hotspot/img/logohotspot.asp.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.975 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.975 · newest: 0.975 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/erberkan/fortilogger_arbitrary_fileupload (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload… (Exploit, VDB Entry, Third Party Advisory)
- packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3378?
- CVE-2021-3378 is a critical-severity vulnerability in Fortilogger, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-02-01.
- How severe is CVE-2021-3378?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-3378 known to be exploited?
- 25 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.