SQL injection vulnerability in detail.asp in Site2Nite Business e-Listings allows remote attackers to execute arbitrary SQL commands via the ID parameter.
Site2Nite Business e-Listings is vulnerable to a critical SQL injection flaw, allowing attackers to inject malicious SQL commands through the ID parameter in detail.asp. This vulnerability can lead to complete database compromise, enabling attackers to steal sensitive data, modify records, or even gain remote code execution on the server.
Step 1: Payload Delivery: The attacker crafts a malicious URL containing a SQL injection payload within the ID parameter. This payload is designed to manipulate the SQL query executed by detail.asp.
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 (including the malicious payload) directly into a SQL query.
Step 4: Database Interaction: The database server executes the modified SQL query, which now includes the attacker's injected code.
Step 5: Data Exfiltration/Manipulation: Depending on the payload, the attacker can then retrieve sensitive data (e.g., usernames, passwords), modify existing data, or potentially execute commands on the server if the database user has sufficient privileges.
The vulnerability stems from a failure to properly sanitize user-supplied input before incorporating it into a SQL query. Specifically, the detail.asp script directly uses the value of the ID parameter in a SQL query without any input validation or escaping. This allows an attacker to inject malicious SQL code, such as adding a WHERE clause that always returns true, or using techniques like UNION SELECT to retrieve data from other tables. The root cause is a lack of input validation and parameterized queries, leading to a direct injection vulnerability. The absence of prepared statements exacerbates the issue.