KomSeo Cart 1.3 SQL Injection Vulnerability

KomSeo Cart version 1.3 is susceptible to SQL injection attacks through the ‘my_item_search’ parameter found within the edit.php file. This vulnerability allows unauthenticated attackers to inject arbitrary SQL commands into the application’s database queries. Successful exploitation of this flaw enables attackers to extract sensitive information from the database, potentially compromising user credentials, financial data, or other confidential information. The vulnerability can be exploited using boolean-based blind or error-based SQL injection techniques. This poses a significant risk to e-commerce platforms using the affected KomSeo Cart version, potentially leading to data breaches and financial losses.

Attack Chain

1. An attacker identifies a KomSeo Cart 1.3 instance.
2. The attacker crafts a malicious SQL payload specifically designed for the ‘my_item_search’ parameter in the edit.php script.
3. The attacker sends a POST request to edit.php with the ‘my_item_search’ parameter containing the SQL injection payload.
4. The KomSeo Cart application processes the request and incorporates the malicious SQL code into a database query.
5. The database executes the injected SQL code.
6. Depending on the type of SQL injection (boolean-based blind or error-based), the attacker analyzes the application’s response to infer information about the database structure and data.
7. The attacker refines the SQL injection payload to extract specific sensitive information, such as usernames, passwords, or financial records.
8. The attacker exfiltrates the extracted data for malicious purposes, potentially leading to identity theft, financial fraud, or further attacks.

Impact

Successful exploitation of this SQL injection vulnerability (CVE-2018-25206) in KomSeo Cart 1.3 can lead to the complete compromise of the affected e-commerce platform’s database. Attackers can steal sensitive customer data, including usernames, passwords, addresses, and financial details. This can result in significant financial losses for both the e-commerce business and its customers. The vulnerability affects all installations of KomSeo Cart 1.3 that have not been patched.

Recommendation

• Deploy the Sigma rule “Detect KomSeo Cart SQL Injection Attempt” to detect malicious POST requests to edit.php with suspicious SQL payloads in the ‘my_item_search’ parameter.
• Inspect web server logs for POST requests to edit.php containing SQL-related keywords or functions in the ‘my_item_search’ parameter (log source: webserver).
• Upgrade to a patched version of KomSeo Cart that addresses the SQL injection vulnerability, if available.