CVE-2019-25462: Web Ofisi Rent a Car SQLi Vulnerability

CVE-2019-25462 Overview

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 with malicious klima values to extract sensitive database information or cause denial of service.

Critical Impact

This SQL injection vulnerability enables unauthenticated remote attackers to extract sensitive database contents, modify data, or disrupt service availability through crafted HTTP GET requests targeting the vulnerable klima parameter.

Affected Products

• Web Ofisi Rent a Car v3

Discovery Timeline

• 2026-02-22 - CVE CVE-2019-25462 published to NVD
• 2026-02-23 - Last updated in NVD database

Technical Details for CVE-2019-25462

Vulnerability Analysis

This vulnerability is classified as CWE-89 (SQL Injection), a common web application flaw where user-supplied input is incorporated into SQL queries without proper sanitization or parameterization. The klima parameter in Web Ofisi Rent a Car v3 accepts user input that is directly concatenated into backend database queries, allowing attackers to inject arbitrary SQL statements.

The attack is network-accessible and requires no authentication or user interaction, making it trivially exploitable by remote threat actors. Successful exploitation can lead to unauthorized access to the entire database, including customer records, rental transactions, and potentially administrative credentials.

Root Cause

The root cause of this vulnerability is improper input validation and the absence of parameterized queries or prepared statements when handling the klima parameter. The application fails to sanitize special SQL characters in user input before incorporating it into database queries, allowing malicious SQL syntax to be interpreted as part of the query structure rather than as literal data values.

Attack Vector

The attack vector is network-based, exploiting the application's HTTP GET request handler. An attacker can craft a malicious URL containing SQL injection payloads in the klima parameter. When the server processes this request, the injected SQL code executes within the context of the database connection, potentially allowing the attacker to:

• Extract sensitive data from database tables using UNION-based or blind SQL injection techniques
• Enumerate database structure, table names, and column information
• Modify or delete database records
• Bypass authentication mechanisms if login queries are affected
• Potentially escalate to remote code execution if database server features like xp_cmdshell (MSSQL) or INTO OUTFILE (MySQL) are available

The vulnerability can be exploited via simple HTTP GET requests, as detailed in the publicly available exploit referenced in Exploit-DB #47144.

Detection Methods for CVE-2019-25462

Indicators of Compromise

• HTTP GET requests containing SQL syntax in the klima parameter (e.g., single quotes, UNION SELECT, OR 1=1)
• Unusual database error messages exposed in HTTP responses
• Unexpected database query patterns or excessive query times indicating blind SQL injection attempts
• Database logs showing queries with UNION, SELECT, or comment sequences from web application contexts

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the klima parameter
• Implement application-layer logging to capture all requests containing suspicious characters in query parameters
• Configure database audit logging to track anomalous query patterns originating from the web application
• Use intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Monitor web server access logs for requests to pages handling the klima parameter with unusual encodings or special characters
• Set up alerts for database errors that may indicate failed SQL injection attempts
• Review database query logs for SELECT statements accessing sensitive tables from unexpected contexts
• Establish baseline metrics for database query performance to detect injection-induced anomalies

How to Mitigate CVE-2019-25462

Immediate Actions Required

• Restrict public access to the affected Web Ofisi Rent a Car v3 application until remediation is complete
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules as a temporary control
• Review and audit database logs for evidence of prior exploitation
• Consider taking the affected application offline if business-critical data is at risk

Patch Information

No official vendor patch information is currently available in the CVE data. Organizations should contact Web Ofisi directly for remediation guidance or consider the workarounds below. Additional details may be available through the VulnCheck SQL Injection Advisory or the Web Ofisi Service Details page.

Workarounds

• Implement input validation at the application level to reject SQL special characters in the klima parameter
• Deploy WAF rules to filter requests containing SQL injection patterns
• Modify application code to use parameterized queries or prepared statements for all database interactions
• Apply principle of least privilege to database accounts used by the web application
• Consider network segmentation to limit database accessibility from compromised web servers

# Example WAF rule for ModSecurity to block SQL injection in klima parameter
SecRule ARGS:klima "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in klima parameter - CVE-2019-25462',\
    tag:'attack-sqli'"