CVE-2010-4635

Step 1: Payload Delivery: The attacker crafts a malicious URL containing a specially crafted SQL injection payload within the ID parameter. This payload is designed to manipulate the SQL query executed by the detail.asp script.

Step 2: Request Submission: The attacker sends the crafted URL to the vulnerable detail.asp script.

Step 3: Query Execution: The detail.asp script receives the request and, without proper sanitization, incorporates the attacker-supplied ID parameter directly into a SQL query.

Step 4: SQL Injection: The SQL injection payload in the ID parameter alters the intended SQL query, allowing the attacker to execute arbitrary SQL commands.

Step 5: Data Manipulation: Depending on the payload, the attacker can read, modify, or delete data from the database. This could include sensitive information such as user credentials, financial data, or other confidential records.

Step 6: Result Retrieval: The database server processes the malicious SQL query and returns the results to the detail.asp script. The attacker then receives the results, which can include sensitive data or confirmation of successful exploitation.

The vulnerability stems from a lack of proper input validation and sanitization of the ID parameter passed to the detail.asp script. This parameter is directly used within a SQL query without being checked for malicious characters or patterns. Specifically, the application fails to escape single quotes, allowing an attacker to inject SQL code. This allows an attacker to manipulate the SQL query, potentially leading to unauthorized access, data exfiltration, or even remote code execution if the database server allows it. The root cause is a failure to implement parameterized queries or prepared statements, which would have prevented the injection of malicious SQL code. The application likely concatenates the user-supplied ID parameter directly into the SQL query string, creating a SQL injection vulnerability.