Directus allows unauthenticated file upload and file modification due to lacking input sanitization

Vulnerability Description

Directus is a real-time API and App dashboard for managing SQL database content. From 10.8.0 to before 11.9.3, a vulnerability exists in the file update mechanism which allows an unauthenticated actor to modify existing files with arbitrary contents (without changes being applied to the files' database-resident metadata) and / or upload new files, with arbitrary content and extensions, which won't show up in the Directus UI. This vulnerability is fixed in 11.9.3.

References

• https://github.com/directus/directus/security/advisories/GHSA-mv33-9f6j-pfmc
• https://github.com/directus/directus/commit/d84dcc36f75fc5c858d43746b8f9c426c38d696b