SQL injection vulnerability in the eluna Page Comments (eluna_pagecomments) extension 1.1.2 and earlier for TYPO3 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
A critical SQL injection vulnerability exists in the eluna Page Comments extension for TYPO3, allowing attackers to remotely execute arbitrary SQL commands. Successful exploitation grants complete control over the database, potentially leading to data breaches, system compromise, and denial of service.
Step 1: Payload Delivery: The attacker crafts a malicious SQL injection payload designed to exploit the vulnerability. This payload is typically embedded within a specially crafted HTTP request, targeting a vulnerable parameter within the eluna_pagecomments extension, such as a comment field or a filtering parameter.
Step 2: Request Submission: The attacker submits the crafted HTTP request to the vulnerable TYPO3 website.
Step 3: Query Construction: The eluna_pagecomments extension receives the request and, due to the lack of input validation, incorporates the attacker's payload directly into an SQL query.
Step 4: Query Execution: The database server executes the maliciously crafted SQL query. The injected SQL code is interpreted and executed by the database.
Step 5: Database Manipulation: The attacker's injected SQL commands are executed, allowing them to perform actions such as retrieving sensitive data (e.g., usernames, passwords), modifying data, or even executing operating system commands (depending on database configuration and privileges).
The vulnerability stems from insufficient input validation and sanitization within the eluna_pagecomments extension. Specifically, user-supplied data, likely related to comment submissions or display filtering, is directly incorporated into SQL queries without proper escaping or filtering. This allows an attacker to inject malicious SQL code, manipulating the query's logic to execute arbitrary commands. The root cause is a failure to implement parameterized queries or properly escape user input before constructing and executing SQL statements. This lack of secure coding practices allows for the injection of malicious SQL code.