CVE-2019-25510: Jettweb PHP Auth Bypass Vulnerability

CVE-2019-25510 Overview

CVE-2019-25510 is a SQL Injection vulnerability in Jettweb PHP Hazir Haber Sitesi Scripti V2 that allows unauthenticated attackers to bypass authentication in the administration panel. The vulnerability exists due to improper SQL query validation in the login form, enabling attackers to submit malicious SQL injection payloads in the username and password fields of the admingiris.php login form to gain unauthorized administrative access.

Critical Impact

Unauthenticated attackers can gain full administrative access to the web application by exploiting SQL injection in the login form, potentially leading to complete system compromise, data theft, and website defacement.

Affected Products

• Jettweb PHP Hazir Haber Sitesi Scripti V2

Discovery Timeline

• 2026-03-12 - CVE-2019-25510 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2019-25510

Vulnerability Analysis

This vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). The authentication mechanism in the administration panel fails to properly sanitize user-supplied input before incorporating it into SQL queries. When a user submits login credentials through the admingiris.php form, the application directly concatenates the username and password values into the authentication SQL query without proper input validation or parameterized queries.

This implementation flaw allows attackers to craft malicious input containing SQL syntax that alters the intended query logic. By injecting specially crafted payloads, an attacker can manipulate the authentication query to return a valid result regardless of whether they possess legitimate credentials, effectively bypassing the entire authentication mechanism.

Root Cause

The root cause of this vulnerability is the lack of proper input sanitization and the use of dynamic SQL query construction in the authentication logic. The application directly incorporates user-controlled input into SQL statements without using prepared statements or parameterized queries. This classic SQL injection pattern occurs when developers concatenate user input directly into database queries, trusting that the input will be benign.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can exploit this vulnerability by accessing the administration login page (admingiris.php) and submitting SQL injection payloads in the username and/or password fields. Common injection payloads such as ' OR '1'='1 or similar boolean-based techniques can manipulate the authentication query to always evaluate as true, granting the attacker access to the administrative interface.

The vulnerability can be exploited remotely without any prior access to the system. Once administrative access is obtained, attackers can potentially modify website content, access sensitive data, create additional administrative accounts, or use the compromised system as a pivot point for further attacks. For additional technical details, refer to the Exploit-DB #46598 entry and the VulnCheck Advisory.

Detection Methods for CVE-2019-25510

Indicators of Compromise

• Unusual or malformed login attempts in web server access logs targeting admingiris.php
• SQL syntax characters in username or password fields (e.g., single quotes, OR statements, comment sequences like -- or #)
• Multiple failed login attempts followed by successful administrative access from the same source
• Unexpected administrative sessions or new admin accounts created without authorization

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in form submissions
• Monitor authentication logs for entries containing SQL keywords or special characters (SELECT, UNION, OR, AND, --, #, ')
• Deploy intrusion detection systems with SQL injection signature rules focused on authentication endpoints
• Analyze web server logs for anomalous POST requests to admingiris.php with unusual payload sizes or character patterns

Monitoring Recommendations

• Enable detailed logging on the web application to capture all authentication attempts with full parameter values
• Set up alerts for multiple authentication failures from the same IP address followed by successful login
• Implement rate limiting on the authentication endpoint to slow down automated injection attempts
• Monitor database query logs for syntax errors or unusual query patterns that may indicate injection attempts

How to Mitigate CVE-2019-25510

Immediate Actions Required

• Restrict access to the administration panel (admingiris.php) by IP allowlisting or VPN-only access
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Consider taking the administrative interface offline until a proper fix can be implemented
• Review access logs for evidence of prior exploitation and audit administrative accounts for unauthorized entries

Patch Information

No official patch information is available from the vendor. Organizations using this software should contact Jettweb directly for security updates or consider migrating to a more actively maintained content management solution. In the absence of vendor patches, implementing the workarounds and additional security controls described below is strongly recommended.

Workarounds

• Implement prepared statements and parameterized queries in the authentication code if modifying the source is possible
• Add input validation to reject special characters commonly used in SQL injection attacks
• Deploy a reverse proxy or WAF that filters malicious SQL injection payloads before they reach the application
• Restrict administrative panel access to trusted IP addresses only using web server configuration or network-level controls
• Consider implementing additional authentication factors (e.g., IP-based restrictions, CAPTCHA) to reduce automated attack success