[Webkit-unassigned] [Bug 190947] New: Post too much text to iFrame could crash webkit

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190947

            Bug ID: 190947
           Summary: Post too much text to iFrame could crash webkit
           Product: WebKit
           Version: Safari 12
          Hardware: iPhone / iPad
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hekai1229 at gmail.com
                CC: cdumez at apple.com

Created attachment 353164

  --> https://bugs.webkit.org/attachment.cgi?id=353164&action=review

bug demo

Sending too much data to iFrame could crash webkit on all iOS.

Reproducation Steps:

1. A form with the field which is assigned much text (~250KB).
2. Set the target of the form to an iframe
3. Submit the form

Reproduction page: http://adeline.cc/fe/test/post-to-iframe.html

HD Demo Videos: https://1drv.ms/f/s!Aq4mpP6jpjzKjqYdjanmchdTycD_HA

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