A critical vulnerability has been discovered in the SourceCodester Sanitization Management System, a widely used application for managing sanitization processes in various industries. This vulnerability, identified as CVE-2022-3868 and assigned a vulnerability identifier of VDB-213012, leads to SQL injection, and may be exploited by remote attackers.

In this post, we will discuss the details of the vulnerability, examine the code snippet that caused the issue, and provide references to the original disclosure and relevant resources. We will also briefly look into the potential impact of exploiting this vulnerability.

Vulnerability Analysis

The vulnerability lies in an unknown function within the /php-sms/classes/Master.php?f=save_quote file. A manipulation of the 'id' argument results in SQL injection, allowing attackers to execute arbitrary SQL commands on the system.

Below is a code snippet showcasing the vulnerable segment of the Master.php file

<?php
    // ...
    if (isset($_POST['id'])) {
        $id = $_POST['id'];
        $sql = "SELECT * FROM quotes WHERE id = $id";
        // ...
    }
    // ...
?>

As seen in the code above, the 'id' argument is directly used in constructing the SQL query without any input validation or sanitization. This lack of protection leaves the system vulnerable to SQL injection attacks.

Exploit Details

An attacker can exploit this vulnerability by sending a carefully crafted request to the affected application, injecting malicious SQL commands through the 'id' argument. The following is an example of a potentially malicious input:

id=1; DROP TABLE quotes;--

This input would result in the following SQL query

SELECT * FROM quotes WHERE id=1; DROP TABLE quotes;--

If executed, this query would not only fetch the data for the quote with id '1', but also delete the entire 'quotes' table from the database, leading to data loss and system compromise.

Disclosure and Resources

This vulnerability was publicly disclosed by an anonymous researcher and is now available for potential attackers to use. Original references providing further details about the vulnerability and its potential impact can be found in the following resources:

- Vulnerability Database (VDB-213012)
- SourceCodester Sanitization Management System Advisory
- CVE-2022-3868 NVD Entry

Conclusion

The CVE-2022-3868 vulnerability in the SourceCodester Sanitization Management System is a critical security issue that may lead to significant damage if exploited. Users of this system should apply available patches and follow best practices to prevent potential attacks. Developers should likewise be cautious when handling user input and ensure proper input validation and sanitization in their code to avoid the introduction of similar vulnerabilities in the future.

Timeline

Published on: 11/05/2022 09:15:00 UTC
Last modified on: 11/08/2022 04:28:00 UTC