CVE-2025-57515: Uniclare Student Portal v2 SQLi Flaw

CVE-2025-57515 Overview

A SQL injection vulnerability has been identified in Uniclare Student Portal v2. This flaw allows remote attackers to inject arbitrary SQL commands via vulnerable input fields, enabling the execution of time-delay functions to infer database responses. This is a time-based blind SQL injection vulnerability that can be exploited remotely without authentication, potentially allowing attackers to extract sensitive student data, modify database contents, or compromise the underlying database server.

Critical Impact

Unauthenticated remote attackers can exploit vulnerable input fields to execute arbitrary SQL commands, potentially leading to complete database compromise, data exfiltration, and unauthorized access to student records.

Affected Products

• Uniclare Student Portal v2

Discovery Timeline

• 2025-10-06 - CVE CVE-2025-57515 published to NVD
• 2025-10-08 - Last updated in NVD database

Technical Details for CVE-2025-57515

Vulnerability Analysis

This vulnerability falls under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The Uniclare Student Portal v2 fails to properly sanitize user-supplied input before incorporating it into SQL queries. Attackers can leverage this weakness to inject malicious SQL statements through vulnerable input fields within the application.

The time-based blind SQL injection technique allows attackers to infer information from the database by observing response delays. By injecting SQL commands that cause conditional time delays (such as SLEEP() or WAITFOR DELAY), attackers can extract data character by character based on whether the application response is delayed.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries or prepared statements in the Uniclare Student Portal v2 application. User-supplied input is directly concatenated into SQL queries without proper sanitization or escaping, allowing attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can remotely access the vulnerable input fields in the Uniclare Student Portal v2 web interface and submit specially crafted payloads containing SQL injection syntax. The vulnerability enables time-based blind SQL injection, where attackers use conditional time delay functions to infer database responses. This technique can be used to:

• Enumerate database schema and table structures
• Extract sensitive student information and credentials
• Modify or delete database records
• Potentially escalate to remote code execution depending on database configuration

For detailed technical analysis and proof-of-concept information, refer to the GitHub PoC Repository and the CVE Report PDF.

Detection Methods for CVE-2025-57515

Indicators of Compromise

• Unusual database query response times indicating time-based injection attempts
• Web application logs showing SQL syntax characters in input parameters (e.g., ', ", ;, --, SLEEP, WAITFOR)
• Repeated requests to the same endpoint with varying payloads in input fields
• Database logs showing failed or unusual query patterns

Detection Strategies

• Deploy web application firewalls (WAF) with SQL injection detection signatures
• Implement application-layer logging to capture and analyze all input parameters
• Monitor database query logs for suspicious patterns including time-delay functions
• Use intrusion detection systems (IDS) with rules for common SQL injection payloads

Monitoring Recommendations

• Enable verbose logging on the web application and database servers
• Set up alerts for anomalous response time patterns that may indicate time-based blind SQL injection
• Monitor for spikes in database CPU usage that could indicate exploitation attempts
• Implement real-time log analysis to detect SQL injection attack patterns

How to Mitigate CVE-2025-57515

Immediate Actions Required

• Restrict public access to the Uniclare Student Portal v2 until remediation is complete
• Implement input validation and parameterized queries as an emergency fix
• Deploy a web application firewall (WAF) with SQL injection protection rules
• Review database access logs for signs of prior exploitation
• Consider taking the application offline if sensitive student data is at risk

Patch Information

No official vendor patch information is currently available. Organizations using Uniclare Student Portal v2 should contact the vendor directly for security updates. In the interim, implement the workarounds and mitigation strategies outlined below.

Workarounds

• Deploy a web application firewall (WAF) configured to block SQL injection attempts
• Implement network-level access controls to restrict access to the portal from trusted IP ranges only
• If source code access is available, implement parameterized queries or prepared statements for all database interactions
• Disable detailed error messages that may reveal database structure information to attackers
• Consider using database user accounts with minimal required privileges to limit impact of successful exploitation

# Example WAF rule for ModSecurity to block common SQL injection patterns
# Add to your ModSecurity configuration
SecRule ARGS "@rx (?i)(\b(select|union|insert|update|delete|drop|truncate|alter)\b.*\b(from|into|set|table)\b|(\bsleep\b|\bwaitfor\b|\bbenchmark\b)\s*\()" \
    "id:100001,phase:2,deny,status:403,msg:'SQL Injection Attempt Detected',log,auditlog"