[Webkit-unassigned] [Bug 153150] New: CSP: Fire 'load' events even when blocking loads via 'frame-src'.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153150

            Bug ID: 153150
           Summary: CSP: Fire 'load' events even when blocking loads via
                    'frame-src'.
    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
                CC: dbates at webkit.org

We should merge <https://src.chromium.org/viewvc/blink?view=rev&revision=165743>.

CSP: Fire 'load' events even when blocking loads via 'frame-src'.

If we fire a 'load' event, the frame looks just like any other
cross-origin load that succeeded. If we don't fire a 'load' event,
timing attacks can gain knowledge about the URL in the frame by blocking
the URL in a page's CSP, and waiting long enough to be sure that a 'load'
event _would_ have fired if the load wasn't blocked.

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