Source: disclosure@vulncheck.com
Web Ofisi Emlak V2 contains multiple SQL injection vulnerabilities in the endpoint that allow unauthenticated attackers to manipulate database queries through GET parameters. Attackers can inject SQL code into parameters like emlak_durumu, emlak_tipi, il, ilce, kelime, and semt to extract sensitive database information or perform time-based blind SQL injection attacks.
Web Ofisi Emlak V2 suffers from critical SQL injection vulnerabilities, allowing unauthenticated attackers to compromise the database. Successful exploitation grants attackers the ability to extract sensitive data, potentially leading to complete system takeover and data breaches.
Step 1: Identify Vulnerable Parameters: The attacker identifies the vulnerable GET parameters (emlak_durumu, emlak_tipi, il, ilce, kelime, and semt) within the Web Ofisi Emlak V2 application.
Step 2: Craft Malicious Payload: The attacker constructs a malicious SQL injection payload designed to extract data, such as database credentials, or to execute arbitrary SQL commands.
Step 3: Inject Payload: The attacker injects the crafted SQL payload into one or more of the identified vulnerable GET parameters in a crafted HTTP GET request.
Step 4: Execute Malicious Query: The Web Ofisi Emlak V2 application receives the malicious request and, due to the lack of input validation, incorporates the attacker's payload directly into an SQL query.
Step 5: Database Interaction: The database server executes the modified SQL query, which now includes the attacker's malicious code.
Step 6: Data Exfiltration/Manipulation: Depending on the payload, the attacker can extract sensitive data (e.g., usernames, passwords, database structure), modify existing data, or potentially gain remote code execution.
The vulnerability stems from insufficient input validation and sanitization of user-supplied data in the GET parameters: emlak_durumu, emlak_tipi, il, ilce, kelime, and semt. The application directly incorporates these parameters into SQL queries without proper escaping or filtering. This allows an attacker to inject malicious SQL code, manipulating the database's behavior. The root cause is a failure to implement parameterized queries or prepared statements, which would prevent the interpretation of user-provided input as executable SQL code. The lack of input validation allows for the injection of SQL commands, leading to unauthorized access and data manipulation. The application likely uses string concatenation to build SQL queries, making it vulnerable to SQL injection.
While no specific APTs are directly linked to this CVE, SQL injection is a common technique used by various threat actors, including those involved in data theft and ransomware attacks. This vulnerability could be exploited by any attacker with basic knowledge of SQL injection techniques. CISA KEV status: Likely not present, but should be considered for inclusion due to the severity and ease of exploitation.
Web Application Firewall (WAF) logs showing suspicious SQL syntax in GET parameters.
Intrusion Detection System (IDS) alerts triggered by SQL injection signatures.
Database server logs indicating unusual query activity or errors.
Network traffic analysis revealing unusual HTTP GET requests with SQL injection payloads.
Examination of web server access logs for suspicious user agents or patterns of requests.
File integrity monitoring to detect changes to web application files that might indicate compromise.
Implement parameterized queries or prepared statements to prevent SQL injection. This is the most effective mitigation.
Thoroughly validate and sanitize all user-supplied input before incorporating it into SQL queries. Use allowlists instead of denylists.
Apply the principle of least privilege to database accounts. Limit the permissions of the database user used by the web application.
Regularly update the Web Ofisi Emlak V2 application to the latest version, if available, or apply any security patches.
Implement a Web Application Firewall (WAF) to filter malicious traffic.
Conduct regular vulnerability scans and penetration testing to identify and address vulnerabilities.
Monitor database activity for suspicious behavior.