CVE-2019-25514: Jettweb PHP Script SQLi Vulnerability

CVE-2019-25514 Overview

Jettweb PHP Hazir Haber Sitesi Scripti V3 contains a critical SQL injection vulnerability that allows remote attackers to inject malicious SQL commands through the kelime parameter in POST requests. Attackers can manipulate this parameter with UNION-based SQL injection payloads to extract sensitive data from the database or bypass authentication controls.

Critical Impact

Unauthenticated attackers can exploit this vulnerability remotely to extract sensitive database contents, bypass authentication, and potentially gain unauthorized access to the underlying system.

Affected Products

• Jettweb PHP Hazir Haber Sitesi Scripti V3

Discovery Timeline

• 2026-03-12 - CVE-2019-25514 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2019-25514

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) exists in Jettweb PHP Hazir Haber Sitesi Scripti V3 due to improper sanitization of user-supplied input in the kelime parameter. The vulnerability is accessible over the network without requiring authentication or user interaction. When exploited, attackers can achieve high confidentiality impact by extracting sensitive data and limited integrity impact through data manipulation.

The application fails to properly validate or parameterize user input before incorporating it into SQL queries, allowing malicious actors to inject arbitrary SQL statements. This classic UNION-based SQL injection enables attackers to append additional SELECT statements to the original query, effectively extracting data from other database tables.

Root Cause

The root cause of this vulnerability is the lack of input validation and parameterized queries in the application's database access layer. The kelime parameter value is directly concatenated into SQL queries without proper escaping or use of prepared statements, creating a direct pathway for SQL injection attacks.

Attack Vector

The attack is performed via network-accessible POST requests to the vulnerable endpoint. Attackers craft malicious payloads containing UNION-based SQL injection syntax in the kelime parameter. The injection allows attackers to:

1. Extract database schema information
2. Retrieve sensitive data from arbitrary tables
3. Bypass authentication mechanisms
4. Potentially escalate to further system compromise

The vulnerability requires no authentication or special privileges, making it particularly dangerous for internet-facing installations.

Detection Methods for CVE-2019-25514

Indicators of Compromise

• Unusual SQL syntax patterns in web server access logs, particularly involving UNION SELECT statements
• Abnormal database query patterns or errors in application logs
• Evidence of database enumeration attempts through error-based information disclosure
• POST requests to the application containing SQL metacharacters in the kelime parameter

Detection Strategies

• Deploy web application firewalls (WAF) with SQL injection detection rules
• Implement database activity monitoring to detect anomalous query patterns
• Configure intrusion detection systems to alert on UNION-based injection payloads
• Monitor application logs for SQL syntax errors that may indicate injection attempts

Monitoring Recommendations

• Enable verbose logging on database servers to capture suspicious query activity
• Set up alerts for failed authentication attempts that may indicate credential extraction
• Monitor for bulk data exfiltration patterns that could suggest successful exploitation
• Implement real-time log analysis for SQL injection signature detection

How to Mitigate CVE-2019-25514

Immediate Actions Required

• Restrict network access to the vulnerable application until patched
• Implement a web application firewall with SQL injection protection
• Review and audit database access logs for signs of exploitation
• Consider taking the application offline if it processes sensitive data

Patch Information

No vendor patch information is currently available. Refer to the VulnCheck Advisory and Exploit-DB #46599 for additional technical details and mitigation guidance.

Workarounds

• Implement parameterized queries or prepared statements in all database interactions
• Apply strict input validation and sanitization on the kelime parameter
• Deploy a WAF configured to block SQL injection attack patterns
• Restrict database user privileges to minimum required permissions
• Consider replacing the vulnerable script with a more secure alternative

# WAF Rule Example - Block common SQL injection patterns
# Add to ModSecurity or similar WAF configuration
SecRule ARGS:kelime "@rx (?i)(union.*select|select.*from|insert.*into|drop.*table)" \
    "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt Blocked'"