[Webkit-unassigned] [Bug 153160] New: CSP: Don't inherit parent's CSP in PluginDocuments

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153160

            Bug ID: 153160
           Summary: CSP: Don't inherit parent's CSP in PluginDocuments
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: All
                OS: All
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dbates at webkit.org

We should merge <https://src.chromium.org/viewvc/blink?view=rev&revision=191037>.

Don't inherit parent's CSP in PluginDocuments

Inheriting the CSP in a PluginDocument causes <iframe src="foo.pdf"> to
be blocked if the parent's CSP forbids <embed src="foo.pdf">, as the
iframe turns into a PluginDocument with an <embed> tag inside it.

The only exception is that the plugin-types directive is still inherited from a parent document to a child PluginDocument, which preserves the current behavior and is required by the CSP spec.

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