CVE-2025-4266: Notice Board System SQL Injection Flaw

CVE-2025-4266 Overview

A critical SQL injection vulnerability has been discovered in PHPGurukul Notice Board System version 1.0. The vulnerability exists in the /bwdates-reports-details.php file and can be exploited through manipulation of the fromdate and todate parameters. This flaw allows unauthenticated remote attackers to inject malicious SQL queries, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

Critical Impact
Remote attackers can exploit this SQL injection vulnerability without authentication to extract sensitive data, modify database contents, or potentially gain further access to the underlying system.

Affected Products

PHPGurukul Notice Board System 1.0
anujk305 Notice Board System 1.0

Discovery Timeline

2025-05-05 - CVE-2025-4266 published to NVD
2025-05-07 - Last updated in NVD database

Technical Details for CVE-2025-4266

Vulnerability Analysis

This SQL injection vulnerability occurs in the date-based reporting functionality of the Notice Board System. The application fails to properly sanitize user-supplied input in the fromdate and todate parameters when processing requests to /bwdates-reports-details.php?vid=2. Without adequate input validation or parameterized queries, attackers can inject arbitrary SQL commands that are executed directly against the backend database.

The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The network-accessible nature of the vulnerable endpoint means that exploitation requires no special privileges or user interaction, making it particularly dangerous for internet-facing deployments.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the PHP application. The fromdate and todate parameters are directly concatenated into SQL queries without sanitization, escaping, or the use of prepared statements. This classic SQL injection pattern allows attackers to break out of the intended query structure and execute arbitrary SQL commands.

Attack Vector

The attack can be launched remotely over the network by sending crafted HTTP requests to the vulnerable endpoint. An attacker would manipulate the fromdate or todate GET parameters in requests to /bwdates-reports-details.php?vid=2. By injecting SQL syntax into these date parameters, the attacker can alter the query logic to extract data from other tables, bypass authentication, modify records, or potentially execute database administrative commands depending on the database user's privileges.

The vulnerability has been publicly disclosed and exploit details are available, increasing the risk of active exploitation. For detailed technical information about the exploitation mechanism, refer to the GitHub CVE Issue Discussion and VulDB entry #307370.

Detection Methods for CVE-2025-4266

Indicators of Compromise

Unusual or malformed requests to /bwdates-reports-details.php containing SQL syntax in date parameters
HTTP access logs showing requests with special characters (single quotes, double dashes, UNION keywords) in fromdate or todate parameters
Database query logs containing unexpected SQL commands or syntax errors
Evidence of data exfiltration or unauthorized database modifications

Detection Strategies

Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in request parameters
Implement intrusion detection signatures for common SQL injection payloads targeting date parameters
Monitor web server access logs for suspicious requests to /bwdates-reports-details.php with anomalous parameter values
Enable database query logging and set alerts for unusual query patterns or errors

Monitoring Recommendations

Configure real-time alerting for requests containing SQL metacharacters in the fromdate and todate parameters
Establish baseline traffic patterns for the notice board application and alert on deviations
Monitor database performance metrics for signs of exploitation such as unusual query execution times or error rates
Implement network-level monitoring for data exfiltration attempts from the database server

How to Mitigate CVE-2025-4266

Immediate Actions Required

Take the PHPGurukul Notice Board System offline or restrict access to trusted networks only until a patch is applied
Implement WAF rules to block SQL injection attempts targeting the vulnerable endpoint
Review database logs for evidence of exploitation and assess potential data compromise
Audit database user permissions and ensure the application uses least-privilege access

Patch Information

At the time of this publication, no official vendor patch has been released for this vulnerability. Organizations should monitor the PHP Gurukul Security Blog for updates and patch releases. In the absence of an official fix, implementing the workarounds below is essential to reduce exposure.

Workarounds

Implement input validation to ensure fromdate and todate parameters contain only valid date formats (e.g., YYYY-MM-DD)
Deploy a Web Application Firewall with SQL injection detection rules to filter malicious requests
Restrict network access to the application using IP whitelisting or VPN requirements
If possible, modify the application code to use prepared statements with parameterized queries for all database operations

bash

# Example Apache .htaccess rule to block common SQL injection patterns
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{QUERY_STRING} (\%27|'|union|select|insert|drop|delete|update|concat|benchmark) [NC]
    RewriteRule ^bwdates-reports-details\.php$ - [F,L]
</IfModule>