CVE-2019-25512: Jettweb PHP Script SQLi Vulnerability

CVE-2019-25512 Overview

Jettweb PHP Hazir Haber Sitesi Scripti V3 contains an SQL injection vulnerability that allows attackers to inject malicious SQL commands through the kelime parameter in POST requests. This vulnerability enables attackers to manipulate the kelime parameter with UNION-based SQL injection payloads to extract sensitive database information or modify database contents.

Critical Impact

Unauthenticated attackers can exploit this SQL injection vulnerability over the network to extract sensitive data from the database, potentially including user credentials, personal information, and other confidential data. Database modification attacks are also possible.

Affected Products

• Jettweb PHP Hazir Haber Sitesi Scripti V3

Discovery Timeline

• 2026-03-12 - CVE-2019-25512 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2019-25512

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the Jettweb PHP Hazir Haber Sitesi Scripti V3, a Turkish news site script. The flaw exists in the handling of user-supplied input through the kelime parameter, which is processed without adequate sanitization or parameterized queries. The vulnerability is network-exploitable and requires no authentication or user interaction to trigger, making it particularly dangerous for publicly accessible installations.

The attack surface is the search functionality where the kelime parameter accepts user input via POST requests. When exploited, attackers can leverage UNION-based SQL injection techniques to append additional SELECT statements to the original query, allowing them to retrieve data from other tables in the database.

Root Cause

The root cause of this vulnerability is improper neutralization of special elements used in SQL commands (CWE-89). The application fails to properly sanitize or parameterize user input from the kelime parameter before incorporating it into SQL queries. This allows attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is conducted over the network by sending specially crafted POST requests to the vulnerable endpoint. The attacker manipulates the kelime parameter to include UNION-based SQL injection payloads. Since the vulnerability requires no authentication and no user interaction, any attacker with network access to the application can exploit it remotely.

The UNION-based injection technique works by appending a UNION SELECT statement to the original query. The attacker must first determine the number of columns in the original query and then craft a UNION SELECT with the same number of columns to extract data from other database tables. This can lead to exposure of sensitive information such as administrator credentials, user data, and other confidential information stored in the database.

For technical details and proof-of-concept information, see the Exploit-DB entry #46599 and the VulnCheck Advisory.

Detection Methods for CVE-2019-25512

Indicators of Compromise

• Unusual SQL syntax or keywords appearing in web server access logs for POST requests containing the kelime parameter
• Database error messages exposed in HTTP responses indicating malformed SQL queries
• Unexpected database queries containing UNION SELECT statements in database query logs
• Anomalous database access patterns showing retrieval of data from multiple unrelated tables

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in POST parameters
• Monitor web server logs for requests containing SQL keywords such as UNION, SELECT, FROM, WHERE, and comment sequences like -- or /*
• Enable database query logging and alert on queries with unexpected UNION operations
• Deploy intrusion detection systems (IDS) with signatures for SQL injection attack patterns

Monitoring Recommendations

• Configure real-time alerting for SQL injection attempt patterns in web application logs
• Implement database activity monitoring to detect unauthorized data access attempts
• Monitor for unusual data exfiltration patterns that may indicate successful exploitation
• Set up alerts for error messages indicating SQL syntax errors that could reveal injection attempts

How to Mitigate CVE-2019-25512

Immediate Actions Required

• Immediately restrict network access to installations of Jettweb PHP Hazir Haber Sitesi Scripti V3 until a patch is applied
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules in front of the vulnerable application
• Review database access logs for signs of prior exploitation
• Consider taking the affected application offline if it handles sensitive data

Patch Information

No official vendor patch information is currently available for this vulnerability. Organizations should contact Jettweb directly for remediation guidance or consider migrating to an alternative, actively maintained content management solution.

Workarounds

• Implement input validation at the application layer to reject input containing SQL metacharacters in the kelime parameter
• Deploy a WAF configured to block SQL injection attempts targeting POST parameters
• Restrict database user privileges to the minimum required for application functionality, limiting the impact of successful injection
• Use stored procedures or parameterized queries if modifying the application code is possible

# Example WAF rule concept for Apache ModSecurity
# Block SQL injection patterns in POST data
SecRule ARGS:kelime "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in kelime parameter',\
    log,\
    auditlog"