Source: disclosure@vulncheck.com
Web Ofisi Rent a Car v3 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the 'klima' parameter. Attackers can send GET requests to with malicious 'klima' values to extract sensitive database information or cause denial of service.
Web Ofisi Rent a Car v3 is vulnerable to a critical SQL injection flaw, allowing unauthenticated attackers to compromise the database. This vulnerability enables attackers to extract sensitive data, potentially leading to data breaches and system compromise, or to cause a denial of service by manipulating database queries.
Step 1: Request Construction: The attacker crafts a malicious GET request targeting the vulnerable Web Ofisi Rent a Car v3 application. The request includes a crafted 'klima' parameter containing SQL injection payload.
Step 2: Payload Delivery: The crafted GET request with the malicious 'klima' value is sent to the web server hosting the application.
Step 3: Query Execution: The application receives the request and, without proper sanitization, incorporates the attacker-controlled 'klima' value directly into an SQL query.
Step 4: SQL Injection: The malicious SQL code injected through the 'klima' parameter is executed by the database server.
Step 5: Data Extraction/DoS: Depending on the injected SQL code, the attacker can either extract sensitive information from the database (e.g., usernames, passwords, customer data) or cause a denial-of-service condition by executing resource-intensive queries or commands that disrupt database operations.
The vulnerability stems from insufficient input validation and sanitization of the 'klima' parameter within the Web Ofisi Rent a Car v3 application. The application directly incorporates user-supplied input from the 'klima' parameter into SQL queries without proper escaping or filtering. This allows an attacker to inject malicious SQL code, altering the intended query logic. The root cause is a failure to implement parameterized queries or prepared statements, which would have prevented the injection of malicious SQL code. The lack of proper input validation allows the attacker to bypass security measures and execute arbitrary SQL commands. This is a classic example of a blind SQL injection vulnerability, as the attacker may not see the direct output of the query, but can infer information based on the application's response.
While no specific APTs are directly linked to this CVE, SQL injection vulnerabilities are commonly exploited by various threat actors, including those involved in data theft, ransomware, and credential harvesting. This vulnerability could be leveraged by financially motivated groups or nation-state actors. This CVE is not currently listed on the CISA KEV.
Web server logs analysis: Look for unusual GET requests with suspicious 'klima' parameter values containing SQL keywords (e.g., 'SELECT', 'UNION', 'WHERE', 'OR', 'AND', '--').
Database server logs analysis: Monitor for unexpected SQL queries, especially those originating from the web application, that contain injected code.
Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) rules: Implement rules to detect SQL injection attempts based on signature matching and behavioral analysis.
Web Application Firewall (WAF) logs: Review WAF logs for blocked requests containing SQL injection payloads.
Network traffic analysis: Examine network traffic for unusual GET requests with suspicious parameter values, using tools like Wireshark or tcpdump.
Implement parameterized queries or prepared statements in all database interactions to prevent SQL injection.
Thoroughly validate and sanitize all user-supplied input, including the 'klima' parameter, before incorporating it into SQL queries.
Employ a Web Application Firewall (WAF) to filter malicious requests and block SQL injection attempts.
Regularly update the Web Ofisi Rent a Car v3 application to the latest version or apply security patches.
Implement the principle of least privilege for database users, granting only the necessary permissions.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Monitor web server and database logs for suspicious activity and potential SQL injection attempts.