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Add trusted-types-eval source expression for script-src #665

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Jan 15, 2025
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Add trusted-types-eval source expression for script-src #665

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25 changes: 17 additions & 8 deletions index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -490,7 +490,7 @@ spec:SRI; urlPrefix: https://w3c.github.io/webappsec-subresource-integrity
<ol class="algorithm">
1. If |serialized| is a [=byte sequence=], then set |serialized| to be the result of
[=isomorphic decoding=] |serialized|.

2. Let |policy| be a new [=/policy=] with an empty [=policy/directive set=], a [=policy/source=]
of |source|, and a [=policy/disposition=] of |disposition|.

Expand Down Expand Up @@ -693,8 +693,9 @@ spec:SRI; urlPrefix: https://w3c.github.io/webappsec-subresource-integrity
<dfn>keyword-source</dfn> = "<dfn>'self'</dfn>" / "<dfn>'unsafe-inline'</dfn>" / "<dfn>'unsafe-eval'</dfn>"
/ "<dfn>'strict-dynamic'</dfn>" / "<dfn>'unsafe-hashes'</dfn>"
/ "<dfn>'report-sample'</dfn>" / "<dfn>'unsafe-allow-redirects'</dfn>"
/ "<dfn>'wasm-unsafe-eval'</dfn>" / "<dfn>'report-sha256'</dfn>"
/ "<dfn>'report-sha384'</dfn>" / "<dfn>'report-sha512'</dfn>"
/ "<dfn>'wasm-unsafe-eval'</dfn>" / "<dfn>'trusted-types-eval'</dfn>"
/ "<dfn>'report-sha256'</dfn>" / "<dfn>'report-sha384'</dfn>"
/ "<dfn>'report-sha512'</dfn>"

ISSUE: Bikeshed `unsafe-allow-redirects`.

Expand Down Expand Up @@ -1539,9 +1540,17 @@ spec:SRI; urlPrefix: https://w3c.github.io/webappsec-subresource-integrity
Otherwise if |policy| contains a [=directive=] whose [=directive/name=] is
"`default-src`", then set |source-list| to that directive's [=directive/value=].

3. If |source-list| is not null, and does not contain a [=source expression=] which is
an [=ASCII case-insensitive=] match for the string "<a grammar>`'unsafe-eval'`</a>",
then:
1. If |source-list| is not null:

1. Let |trustedTypesRequired| be the result of executing [$Does sink type require trusted types?$], with
|realm|, `'script'`, and `false`.

1. If |trustedTypesRequired| is `true` and |source-list| contains a [=source expression=] which is an
[=ASCII case-insensitive=] match for the string "<a grammar>`'trusted-types-eval'`</a>", then skip the
following steps.

1. If |source-list| contains a [=source expression=] which is an [=ASCII case-insensitive=] match for the
string "<a grammar>`'unsafe-eval'`</a>", then skip the following steps.

1. Let |violation| be the result of executing [[#create-violation-for-global]] on
|global|, |policy|, and "`script-src`".
Expand Down Expand Up @@ -2861,8 +2870,8 @@ Content-Type: application/reports+json
<a grammar>nonce-source</a> or a <a grammar>hash-source</a> that matches
the inline block.

4. The following JavaScript execution sinks are gated on the "`unsafe-eval`"
source expression:
4. The following JavaScript execution sinks are gated on the "`unsafe-eval`" and "`trusted-types-eval`"
source expressions:

* {{eval()}}
* {{Function()}}
Expand Down
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