TYPO3 Core

Benjamin Franzke found this https://serverfault.com/a/1064775 discussion. So in conclusion, a cached nonce may not be a general problem for the CSP

Torben Hansen wrote in #note-4:

Benjamin Franzke found this https://serverfault.com/a/1064775 discussion. So in conclusion, a cached nonce may not be a general problem for the CSP

As long as the nonce changes when the content is changed, this is okay.

However for TYPO3 USER_INT or COA_INT it is unknown, which content has been served previously. I think having a few examples and documentation for dynamic workers on CloudFlare or Varnish would be a good thing.

Patch set 2 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 3 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 4 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 5 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 6 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 7 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 8 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 9 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 10 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 11 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 12 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 13 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 14 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 15 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 16 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 17 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 18 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 19 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 20 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 21 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 22 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 23 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 24 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 25 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 26 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 27 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 28 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

The current f:asset.script view-helper has a bunch of attributes which have specific meaning and might create new ambiguity:

• prior to https://review.typo3.org/c/Packages/TYPO3.CMS/+/85310 where registered as tag attributes and are now handled as "additionalArguments" in Fluid
  • integrity: actually used for sub-resource-integrity (independent of content-security-policy) → however, consider to use this existing value for CSP (instead of calculating it automatically, which is actually good for remote sources)
  • nonce: actually using a given nonce for (independent of content-security-policy) → however, consider to us the existing value for CSP (instead of using the global request nonce)
• the following attributes can be used to control the global behavior
  • useNonce: explicitly requesting to assign the global nonce (the nonce attribute might(!) take precedence)
  • csp (or any other name that fits better): automatically apply hashes or nonces if applicable → however the meaning would conflict with an explicit useNonce attribute

Some examples what might actually happen:

• <f:asset.script identifier="script" src="https://external.example.org/app.js" integrity="hash-abc" nonce="nonce-xyz" useNonce="1" csp="1" />
  • integrity is given and should be used for CSP unsafe-hashes, since csp="1" is given
  • nonce and useNonce should be dropped, since integrity is more specific (in case integrity has an outdated hash, the script would be blocked, since it was changed remotely - but security-wise it's actually the desired behavior)
• <f:asset.script identifier="script" integrity="hash-abc" nonce="nonce-xyz" useNonce="1" csp="1">console.log(1);</f:asset.script>
  • integrity might be ignored, since it does not have any impact on inline scripts in the current specs
  • the given nonce attribute should take precedence over useNonce
  • however, having the csp attribute set, should(!) adjust CSP rules - that's ambiguous

Patch set 29 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 30 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 31 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554

Patch set 32 for branch main of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/80554