Nowadays, the healthcare industry relies heavily on digital tools to streamline their workflows and improve patient care. One such application is the Online Diagnostic Lab Management System (ODLMS) version 1.. However, with the convenience and efficiency of web-based applications come risks, including those associated with security vulnerabilities. In this case, the CVE-2022-43052 vulnerability has been detected within ODLMS v1., which stems from a SQL injection issue.

This post will delve into the details surrounding this vulnerability, including the affected components, potential exploits, risk mitigation, and recommendations for addressing the issue. We will also include relevant code snippets and links to original references for a deeper understanding of the problem.

Vulnerability Details

CVE-2022-43052 impacts the Online Diagnostic Lab Management System v1., which is a software solution developed to help healthcare facilities manage laboratory operations. The PHP-based application contains an SQL injection vulnerability via the 'id' parameter at the /odlms/classes/Users.php?f=delete endpoint. This vulnerability could allow an attacker to take control of the database server and potentially exfiltrate sensitive patient data.

Exploit Details

The vulnerability lies within the Users.php file, specifically in the 'delete' function. The 'id' parameter supplied to the function is not properly sanitized before being used in an SQL query, which opens the door for SQL injection attacks.

Here's the problematic code snippet from Users.php

function delete($id){
  $this->db->query("DELETE FROM users WHERE id=:id");
  $this->db->bind(':id', $id);
  if($this->db->execute()){
    return true;
  } else {
    return false;
  }
}

The code above uses a prepared statement with the 'id' parameter. However, as the input data provided by the user is not sanitized, it could allow an attacker to include malicious SQL code in their input, ultimately leading to the unauthorized manipulation of the database.

To exploit this vulnerability, an attacker could craft an HTTP POST request similar to the following

POST /odlms/classes/Users.php?f=delete HTTP/1.1
Host: targetserver.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 15

id=1 OR 1=1--

By injecting an SQL statement such as '1 OR 1=1--', the attacker could potentially bypass the intended access control and modify, add, or delete data stored in the database.

Risk Mitigation and Recommendations

To protect applications against SQL injection attacks like the one detailed in CVE-2022-43052, developers should always use parameterized queries or prepared statements to interact with databases. Additionally, input validation should be conducted on all user-supplied data.

To address the specific vulnerability identified in ODLMS v1., the developers should

1. Implement proper input sanitization and validation for the 'id' parameter in the 'delete' function of Users.php.

Ensure that all user input is correctly handled and sanitized throughout the entire application.

3. Conduct a thorough code audit and perform security testing to uncover and rectify any similar vulnerabilities within the software.

Original References and Additional Resources

1. NIST National Vulnerability Database - CVE-2022-43052

2. OWASP SQL Injection Cheat Sheet

In conclusion, it is essential to emphasize the importance of adhering to secure coding practices when developing web applications. The healthcare industry, in particular, is a prime target for cyberattacks, and applications such as the Online Diagnostic Lab Management System must prioritize security to safeguard the sensitive data they handle. By being proactive in identifying and remediating vulnerabilities like CVE-2022-43052, developers contribute to the overall security of the digital healthcare ecosystem.

Timeline

Published on: 11/07/2022 20:15:00 UTC
Last modified on: 11/08/2022 15:09:00 UTC