Cisco-Smart-Exploit

Cisco SmartInstall Exploit CVE-2018-0171

Inspired from C. Papathanasiou PoC

This Python 3 script uses port 4786 on a Cisco device running SmartInstall to exploit CVE-2018-0171. With the use of this exploit, an attacker can craft a payload, send it to the Cisco device, and then extract the contents of the running-config file.

The Cisco Smart Exploit script can:

• Extract the running-config file
• Parse and decrypt secret 7 hashes
• Parse plain text passwords
• Parse all the Community String

Requirements

Here is the list of requirements to use the script:

• tftpy==0.8.2
• c7decrypt for secret 7 decryption
  • gem install c7decrypt

Usage

 __     __   __   __      __              __  ___     ___      __        __    ___
/  ` | /__` /  ` /  \    /__`  |\/|  /\  |__)  |     |__  \_/ |__) |    /  \ |  |
\__, | .__/ \__, \__/    .__/  |  | /~~\ |  \  |     |___ / \ |    |___ \__/ |  |
by @AlrikRr

usage: cisco-se.py [-h] (-i IP | -f FILE | -c CONFIG)

optional arguments:
  -h, --help  show this help message and exit
  -i IP       Single IP Address
  -f FILE     File that contains IP list
  -c CONFIG   running-config File standalone

Examples :

python3 cisco-se.py -i 192.168.10.1

python3 cisco-se.py -f ip_list.txt

python3 cisco-se.py -c running-config.txt

Nmap Output IP list

For the -f FILE option, here is an example using nmap:

nmap -p 4786 10.20.30.0/24 --open -Pn -oG - | awk '/Up$/{print $2}' > ip_list.txt

Todo List

• Handle the timeout error for some ips during client.download()