Attacker Value

Very High

Simple Membership System using PHP and AJAX is vulnerable to remote SQL-Injection-Bypass-Authentication/XSS-Stored PWNED

Attacker Value

Very High

(1 user assessed)

Exploitability

Very High

(1 user assessed)

User Interaction

Unknown

Privileges Required

Unknown

Attack Vector

Unknown

Simple Membership System using PHP and AJAX is vulnerable to remote SQL-Injection-Bypass-Authentication/XSS-Stored PWNED

Last updated September 17, 2021

MITRE ATT&CK

Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Execution

Techniques

Validation

Command and Scripting Interpreter: Python

Validated

Command and Scripting Interpreter: JavaScript/JScript

Validated

Exploitation for Client Execution

Validated

Description

Description:

The Simple Membership System using PHP and AJAX is vulnerable to remote SQL-Injection-Bypass-Authentication for the admin account/XSS-Stored PWNED.
remote SQL-Injection-Bypass-Authentication: https://portswigger.net/support/using-sql-injection-to-bypass-authentication.
The parameters (username and password) from the login form is not protected correctly and there is no security and escaping from malicious payloads.
When the user will sending a malicious query or malicious payload to the MySQL server for login to the admin account on the system,
he can bypass the login credentials and take control of this account. And the second time he can be adding a payload by using XSS-Stored

Add Assessment

nu11secur1ty (195)

September 17, 2021 8:39am UTC (2 years ago)•

Ratings

Attacker Value

Very High

Exploitability

Very High

Easy to weaponize Gives privileged access Vulnerable in default configuration

Technical Analysis

CVE-nu11-13-091721

Vulnerability `PHP`app code `validate.php`and structure also

<?php
	require_once 'conn.php';
	$username = $_POST['username'];
	$password = $_POST['password'];
	$query = $conn->query("SELECT * FROM `admin` WHERE `username` = '$username' && `password` = '$password'") or die(mysqli_error());
	$validate = $query->num_rows;
	$fetch = $query->fetch_array();
	if($validate > 0){
		echo "Success";
		session_start();
		$_SESSION['admin_id'] = $fetch['admin_id'];
	}else{
		echo "Error";
	}

Simple fix.

WARNING: THIS IS NOT FIX OF THE PROBLEM, Just an example =)

<?php
	require_once 'conn.php';
	$username = $_POST['username'];
	$password = $_POST['password'];
	$query = $conn->query("SELECT * FROM `admin` WHERE `username` = ('$username') && `password` = '$password'") or die(mysqli_error());
	$validate = $query->num_rows;
	$fetch = $query->fetch_array();
	if($validate > 0){
		echo "Success";
		session_start();
		$_SESSION['admin_id'] = $fetch['admin_id'];
	}else{
		echo "Error";
	}

Description:

BR

[+] @nu11secur1ty System Administrator – Infrastructure and Penetration Testing Engineer

Reproduce:

href

Proof:

href

BR nu11secur1ty

References

Exploit

The following exploit POCs have not been verified by Rapid7 researchers, but are sourced from: nomi-sec/PoC-in-GitHub.
Additional sources will be added here as they become relevant.
Notes: We will only add the top 3 POCs for a given CVE. POCs added here must have at least 2 GitHub stars.

The Simple Membership System using PHP and AJAX is vulnerable to remote SQL-Injection-Bypass-Authentication for the admin account/XSS-Stored PWNED. remote SQL-Injection-Bypass-Authentication: https://portswigger.net/support/using-sql-injection-to-bypass-authentication. The parameters (username and password) from the login form is not protected correctly and there is no security and escaping from malicious payloads. When the user will sending a malicious query or malicious payload to the MySQL server for login to the admin account on the system, he can bypass the login credentials and take control of this account. And the second time he can be adding a payload by using XSS-Stored (https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/razormist)

Rapid7

Very High