Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Mediabridge Medialink Wireless-N Broadband Router MWN-WAPR300N contains multiple vulnerabilities
Informations
Name VU#630872 First vendor Publication 2015-09-03
Vendor VU-CERT Last vendor Modification 2015-09-03
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Vulnerability Note VU#630872

Mediabridge Medialink Wireless-N Broadband Router MWN-WAPR300N contains multiple vulnerabilities

Original Release date: 03 Sep 2015 | Last revised: 03 Sep 2015

Overview

Mediabridge Medialink Wireless-N Broadband Router MWN-WAPR300N, firmware version 5.07.50 and possibly earlier, uses non-unique default credentials and is vulnerable to universal authentication bypass and cross-site request forgery (CSRF).

Description

CWE-255: Credentials Management - CVE-2015-5994

Medialink MWN-WAPR300N by default uses the common admin:admin credentials for the web management interface and uses medialink:password for the wireless network. An attacker within range of a wireless network using default settings can connect and gain privileged access to the web management interface. Additionally, default credentials can be leveraged in remote attacks such as cross-site request forgery.

CWE-784: Reliance on Cookies without Validation and Integrity Checking in a Security Decision - CVE-2015-5995

Authorization in the Medialink MWN-WAPR300N is handled by checking the HTTP Cookie header that is sent by the client. An unauthenticated, local area network (LAN) attacker can modify the cookie header of a request to "Cookie: language-en; admin:language-en" and gain admin access to restricted pages of the web management interface without any knowledge of credentials. This authentication bypass works regardless of whether the administrator account username has been changed from 'admin.'

CWE-352: Cross-Site Request Forgery (CSRF) - CVE-2015-5996

Medialink MWN-WAPR300N routers contain a global cross-site request forgery (CSRF) vulnerability. An attacker can perform actions with the same permissions as a victim user, provided the victim has an active session and is induced to trigger the malicious request. Note that in combination with default credentials, an attacker can establish an active session as part of an attack and does not require a victim to be logged in.

The CVSS score below describes CVE-2015-5996.

Impact

A remote, unauthenticated attacker may be able to induce an authenticated user into making an unintentional request to the web server that will be treated as an authentic request. A LAN-based attacker can bypass authentication to take complete control of a vulnerable device.

Solution

The CERT/CC is currently unaware of a practical solution to this problem. Until these vulnerabilities are addressed, users should consider the following workarounds.

Restrict access and use strong passwords

As a general good security practice, only allow trusted hosts to connect to the LAN. Implement strong passwords for WiFi and for the web management interface. While passwords do not provide any additional security against LAN-based attackers due to the authentication bypass vulnerability, passwords can help to prevent blind guessing attempts that would establish sessions for CSRF attacks. LAN hosts should not browse the Internet while the web management interface has an active session in a browser tab.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
MediabridgeAffected01 Jul 201502 Sep 2015
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

GroupScoreVector
Base6.8AV:N/AC:M/Au:N/C:P/I:P/A:P
Temporal6.1E:POC/RL:U/RC:C
Environmental4.6CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

  • https://www.mediabridgeproducts.com/store/pc/viewPrd.asp?idproduct=374&idcategory=198
  • https://cwe.mitre.org/data/definitions/255.html
  • https://cwe.mitre.org/data/definitions/784.html
  • https://cwe.mitre.org/data/definitions/352.html

Credit

These vulnerabilities were reported by Joel Land of the CERT/CC.

This document was written by Joel Land.

Other Information

  • CVE IDs:CVE-2015-5994CVE-2015-5995CVE-2015-5996
  • Date Public:03 Sep 2015
  • Date First Published:03 Sep 2015
  • Date Last Updated:03 Sep 2015
  • Document Revision:13

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/630872

CWE : Common Weakness Enumeration

% Id Name
33 % CWE-352 Cross-Site Request Forgery (CSRF) (CWE/SANS Top 25)
33 % CWE-264 Permissions, Privileges, and Access Controls
33 % CWE-255 Credentials Management

CPE : Common Platform Enumeration

TypeDescriptionCount
Hardware 1
Os 1

Snort® IPS/IDS

Date Description
2019-05-24 Tenda Wireless N150 Router cross-site request forgery attempt
RuleID : 49938 - Revision : 1 - Type : SERVER-WEBAPP
2019-05-24 Tenda Wireless N150 Router cross-site request forgery attempt
RuleID : 49937 - Revision : 1 - Type : SERVER-WEBAPP
2016-06-07 Mediabridge Medialink MWN-WAPR300N and Tenda N3 Wireless N150 inbound admin a...
RuleID : 38729 - Revision : 4 - Type : SERVER-OTHER

Alert History

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0
1
2
Date Informations
2016-01-01 05:27:02
  • Multiple Updates
2015-12-31 09:27:33
  • Multiple Updates
2015-09-03 21:23:04
  • First insertion