Nusiorung CMS 2016 - (Login) Auth Bypass Vulnerability Jul 27 2016 08:38AM
Vulnerability Lab (research vulnerability-lab com)
Document Title:
Nusiorung CMS 2016 - (Login) Auth Bypass Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

Abstract Advisory Information:
An independent vulnerability laboratory researcher discovered a login auth bypass web vulnerability in the official Nusiorung CMS 2016.

Vulnerability Disclosure Timeline:
2016-07-13: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

Exploitation Technique:

Severity Level:

Technical Details & Description:
An auth bypass web vulnerability has been discovered in the official Nusiorung content management system 2016.
The vulnerability allows remote attackers to bypass the authentication mechanism of the web-application to compromise.

The vulnerability is located in the username and password input fields of the admin login module. Remote attackers
are able to perform malicious POST method requests to unauthorized login to the administrator panel. The vulnerability
is a classic login auth bypass issue. The attack vector is located to the application-side and the request method to
inject is POST.

The security risk of the auth bypass web vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 7.6.
Exploitation of the remote auth bypass web vulnerability requires no user interaction or privileged web-application user account.
Successful exploitation of the remote vulnerability results in database management system, account system or web-application compromise.

Request Method(s):
[+] POST

Vulnerable Module(s):
[+] Login

Vulnerable Parameter(s):
[+] Gebruikersnaam(username) and Wachtwoord(Password)

Proof of Concept (PoC):
The auth bypass web vulnerability can be exploited by remote attackers without user interaction or privileged user account.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

Google Dork(s): intext:"Powered By nusiorung"

PoC: Exploitation
Username: '=' 'OR'
Password: '=' 'OR'


Security Risk:
The security risk of the auth bypass web vulnerability in the web-application login module is estimated as high. (CVSS 7.6)

Credits & Authors:
mr_mask_black - [http://www.vulnerability-lab.com/show.php?user=mr_mask_black]

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