Overview
Billing Software v1.0, a widely used software for managing invoices and bills, has been discovered to be vulnerable to serious Unauthenticated SQL Injection attacks. This vulnerability, designated as CVE-2023-49641, allows attackers to manipulate SQL queries in the application’s backend by injecting malicious SQL statements through the loginCheck.php resource. This vulnerability is critical as it can lead to potential system compromise or data leakage, posing a significant risk to the confidentiality, integrity, and availability of user data.
Vulnerability Summary
CVE ID: CVE-2023-49641
Severity: Critical (9.8 CVSS v3)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Billing Software | v1.0
How the Exploit Works
An attacker can exploit this vulnerability by injecting SQL queries through the ‘username’ parameter in the loginCheck.php resource. This is possible because the software doesn’t validate the characters received and sends them unfiltered to the database. This allows an attacker to manipulate the SQL queries executed by the application, enabling unauthorized viewing, modification, or even deletion of data in the database.
Conceptual Example Code
A possible exploit might look like this, where the attacker sends a specially crafted username to trigger the SQL Injection:
POST /loginCheck.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
username=' OR '1'='1'; --&password=exampleIn this example, the SQL query would be manipulated to always return true, bypassing the authentication mechanism and allowing the attacker to log in as any user.
Mitigation and Recommendations
Users of Billing Software v1.0 must urgently apply the vendor patch to fix this vulnerability. If a patch is not immediately available, it is recommended to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation. This can help filter out malicious data inputs that could potentially exploit the SQL Injection vulnerability. It is also advisable to review and enhance the input validation mechanisms within the application to prevent similar vulnerabilities in the future.