CVE-2025-4568: SQL Injection Vulnerability via Parameter

CVE-2025-4568 Overview

CVE-2025-4568 is a critical SQL Injection vulnerability affecting 2Click Portal. The vulnerability exists due to improper neutralization of user-supplied input in the changes__reference_id parameter within the URL, enabling boolean-based Blind SQL Injection attacks. This allows unauthenticated attackers to extract sensitive information from the underlying database through carefully crafted SQL queries.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability to access, modify, or delete sensitive database contents, potentially compromising the entire application and its data.

Affected Products

• 2Click Portal (versions unspecified)

Discovery Timeline

• 2025-06-05 - CVE-2025-4568 published to NVD
• 2025-06-05 - Last updated in NVD database

Technical Details for CVE-2025-4568

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The flaw resides in the handling of the changes__reference_id URL parameter, which accepts user input without adequate sanitization or parameterization before being incorporated into SQL queries.

The boolean-based blind SQL injection technique allows attackers to infer database contents by observing differences in application responses based on true or false conditions injected into queries. While this method is slower than union-based injection, it remains highly effective for data exfiltration when direct query results are not reflected in the response.

The vulnerability is network-accessible without authentication requirements, meaning any remote attacker can potentially exploit it without needing valid credentials or user interaction. This significantly expands the attack surface and increases the risk of exploitation.

Root Cause

The root cause of this vulnerability is the failure to properly sanitize or parameterize user-controlled input before incorporating it into SQL queries. The changes__reference_id parameter is directly concatenated into database queries without validation, allowing attackers to inject malicious SQL syntax that alters the intended query logic.

Attack Vector

The attack is conducted over the network by manipulating the changes__reference_id parameter in HTTP requests to the vulnerable endpoint. An attacker crafts specially formatted input containing SQL syntax designed to evaluate boolean conditions. By analyzing the application's response patterns (differences in content, timing, or HTTP status codes), the attacker can systematically extract database information one bit at a time.

The exploitation methodology typically involves:

1. Identifying the injectable parameter through testing with SQL metacharacters
2. Confirming boolean-based injection by observing differential responses to true/false conditions
3. Iteratively extracting database schema, table names, and sensitive data
4. Potentially escalating to administrative database operations depending on database user privileges

Detection Methods for CVE-2025-4568

Indicators of Compromise

• Unusual SQL-related error messages or application behavior when accessing URLs containing the changes__reference_id parameter
• Web application logs showing requests with SQL metacharacters (single quotes, semicolons, boolean operators) in URL parameters
• Increased database query load or unusual query patterns from web application database connections
• Multiple sequential requests to the same endpoint with slightly varying parameter values (characteristic of automated blind SQL injection tools)

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the changes__reference_id parameter
• Deploy database activity monitoring to identify anomalous query patterns or unauthorized data access attempts
• Configure application logging to capture full request details including URL parameters for forensic analysis
• Utilize intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for requests containing SQL injection payloads targeting the changes__reference_id parameter
• Set up alerts for database query errors that may indicate injection attempts
• Track authentication failures and unauthorized access attempts in conjunction with parameter manipulation
• Implement real-time monitoring for unusual data exfiltration patterns from the database

How to Mitigate CVE-2025-4568

Immediate Actions Required

• Apply vendor patches as soon as they become available from 2Click Portal
• Implement input validation and parameterized queries for the changes__reference_id parameter
• Deploy Web Application Firewall rules to block SQL injection attempts
• Review and restrict database user privileges to limit potential damage from successful exploitation

Patch Information

Consult the official vendor advisory and CERT Poland's CVE-2025-4568 post for the latest patch information and remediation guidance. Contact the vendor through the 2Click Portal website for specific patching instructions.

Workarounds

• Implement strict input validation on the changes__reference_id parameter to allow only expected numeric or alphanumeric values
• Deploy a Web Application Firewall configured to detect and block SQL injection patterns
• Consider temporarily disabling or restricting access to functionality utilizing the vulnerable parameter until a patch is applied
• Implement network segmentation to limit database access from compromised web application components