CVE-2019-25674: Victoralagwu Cmssite SQLi Vulnerability

CVE-2019-25674 Overview

CMSsite 1.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the post parameter. Attackers can send GET requests to post.php with malicious post values to extract sensitive database information or perform time-based blind SQL injection attacks.

Critical Impact

This SQL injection vulnerability enables unauthenticated remote attackers to extract sensitive database contents, bypass authentication mechanisms, and potentially gain complete control over the underlying database server through malicious queries injected via the post parameter.

Affected Products

• victoralagwu cmssite 1.0

Discovery Timeline

• 2026-04-05 - CVE CVE-2019-25674 published to NVD
• 2026-04-09 - Last updated in NVD database

Technical Details for CVE-2019-25674

Vulnerability Analysis

This SQL injection vulnerability in CMSsite 1.0 stems from improper handling of user-supplied input in the post.php file. The application fails to properly sanitize or parameterize the post parameter before incorporating it into SQL queries. This classic web application vulnerability allows attackers to alter the structure and intent of database queries, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), which represents one of the most common and dangerous web application security flaws. Without proper input validation, attackers can inject arbitrary SQL commands that the database server will execute with the same privileges as the application.

Root Cause

The root cause of this vulnerability is the lack of input sanitization and the absence of parameterized queries (prepared statements) in the post.php file when handling the post GET parameter. User-controlled input is directly concatenated into SQL query strings, allowing attackers to escape the intended query context and inject malicious SQL code. This represents a fundamental failure to follow secure coding practices for database interactions.

Attack Vector

The attack is network-based and can be executed by unauthenticated remote attackers. The exploitation process involves sending crafted HTTP GET requests to the post.php endpoint with malicious SQL code embedded in the post parameter. Attackers can leverage various SQL injection techniques including:

• Union-based injection: Extracting data from other database tables by appending UNION SELECT statements
• Time-based blind injection: Inferring database contents through conditional time delays using functions like SLEEP()
• Boolean-based blind injection: Determining true/false conditions based on application response differences
• Error-based injection: Extracting information through database error messages

Technical details and proof-of-concept information can be found in the Exploit-DB #46402 advisory and the VulnCheck SQL Injection Advisory.

Detection Methods for CVE-2019-25674

Indicators of Compromise

• HTTP GET requests to post.php containing SQL syntax characters such as single quotes ('), double dashes (--), semicolons (;), or UNION SELECT statements
• Unusual database query patterns or errors in application logs indicating malformed SQL
• Evidence of data exfiltration or unauthorized database access in audit logs
• Time-based delays in application responses that may indicate blind SQL injection attempts

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rules to monitor and block malicious requests to post.php
• Enable comprehensive logging on web servers and database servers to capture suspicious query patterns
• Implement intrusion detection systems (IDS) with signatures for common SQL injection payloads
• Monitor for anomalous database query execution times that may indicate time-based blind injection

Monitoring Recommendations

• Enable detailed access logging for the post.php endpoint and regularly review for suspicious parameter values
• Configure database audit logging to capture all queries executed against sensitive tables
• Set up alerting for repeated failed or malformed SQL queries originating from the same source
• Implement real-time monitoring of web application traffic for SQL injection patterns

How to Mitigate CVE-2019-25674

Immediate Actions Required

• Remove or disable the CMSsite 1.0 application from production environments until a secure version is available
• Implement Web Application Firewall (WAF) rules to block SQL injection attempts targeting the post parameter
• Review and audit database access logs for any signs of prior exploitation
• Consider migrating to an actively maintained CMS solution with proper security practices

Patch Information

No official vendor patch has been identified for this vulnerability. The GitHub CMSsite Repository should be monitored for any security updates. Organizations using CMSsite 1.0 are strongly advised to implement the workarounds below or consider alternative CMS solutions.

Workarounds

• Implement prepared statements (parameterized queries) in all database interactions to prevent SQL injection
• Deploy a WAF with SQL injection filtering enabled to block malicious requests at the network perimeter
• Apply input validation to restrict the post parameter to expected values (e.g., numeric IDs only)
• Restrict database user privileges to the minimum required for application functionality to limit potential damage from successful exploitation

# WAF rule example for ModSecurity to block SQL injection in post parameter
SecRule ARGS:post "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in post parameter',\
    tag:'CVE-2019-25674'"