SQL Injection Vulnerability in HR System Update_Earn_Leave Endpoint: Analysis and Fix

Vulnerability Overview This vulnerability is a time-based blind SQL injection affecting the functionality within the HR management application. The flaw resides in the endpoint, specifically within the POST parameter. Attackers can inject arbitrary SQL queries into the backend MySQL database, leading to risks such as sensitive data leakage, database enumeration, extraction of employee information, and authentication bypass. Scope of Impact Affected Endpoint: Affected Parameter: Affected File: Affected Function: Remediation Use parameterized queries/prepared statements instead of directly concatenating user-controlled input into SQL queries. Additionally, implement strict input validation, ensure database accounts follow the principle of least privilege, enable centralized logging and monitoring, and consider using a Web Application Firewall (WAF) to reduce exploitation risks. POC Code Exploitation Code Verification (SQLmap) SQLMap Output Impact Successful exploitation of this vulnerability allows an authenticated attacker to execute arbitrary SQL queries against the backend database. This could lead to the extraction of employee records, leakage of usernames and password hashes, unauthorized access to sensitive HR information, database enumeration, potential privilege escalation, and ultimately, full control over the application's database. Reproduction Steps 1. Authenticate to the HR system. 2. Navigate to the vulnerable functionality. 3. Intercept the request to . 4. Modify the parameter with the following payload: 5. Observe the delayed server response (~5 seconds) to confirm successful SQL query execution. Fix Recommendations Use parameterized queries/prepared statements instead of directly concatenating user-controlled input into SQL queries. Secure Example Additionally, implement strict input validation, ensure database accounts follow the principle of least privilege, enable centralized logging and monitoring, and consider using a Web Application Firewall (WAF) to reduce exploitation risks.

Goal Reached Thanks to every supporter — we hit 100%!

SQL Injection Vulnerability in HR System Update_Earn_Leave Endpoint: Analysis and Fix

More from this source