Werk #11607: Improve GUI security: Prevent changing content type
| Component | User interface | ||
| Title | Improve GUI security: Prevent changing content type | ||
| Date | Nov 19, 2020 | ||
| Level | Trivial Change | ||
| Class | Security Fix | ||
| Compatibility | Compatible - no manual interaction needed | ||
| Checkmk versions & editions |
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All web pages served by Checkmk will now have the HTTP header Header always set X-Content-Type-Options: "nosniff" set. It prevents a client from guessing the content type based on the provided file. This is a way to opt out of MIME type sniffing, or, in other words, to say that the MIME types are deliberately configured.
Further information can be found here:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options https://www.chromium.org/Home/chromium-security/corb-for-developers