CVE-2025-11113
📋 TL;DR
This SQL injection vulnerability in CodeAstro Online Leave Application 1.0 allows attackers to manipulate database queries through the 'city' parameter in /signup.php. Attackers can potentially read, modify, or delete sensitive data from the application's database. Organizations using this software are affected.
💻 Affected Systems
- CodeAstro Online Leave Application
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of sensitive employee data, authentication bypass, or remote code execution on the database server.
Likely Case
Data exfiltration of user information, manipulation of leave application records, or partial database corruption.
If Mitigated
Limited impact with proper input validation and database permissions restricting unauthorized access.
🎯 Exploit Status
The exploit is publicly available and can be executed without authentication. Other parameters beyond 'city' may also be vulnerable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://codeastro.com/
Restart Required: No
Instructions:
1. Check vendor website for security updates. 2. Apply any available patches. 3. If no patch exists, implement workarounds immediately.
🔧 Temporary Workarounds
Input Validation and Sanitization
PHPImplement strict input validation and parameterized queries for all user inputs in /signup.php
Modify /signup.php to use prepared statements with parameterized queries
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting the /signup.php endpoint
Add WAF rule: Block requests to /signup.php containing SQL keywords in parameters
🧯 If You Can't Patch
- Isolate the application behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from the application server
🔍 How to Verify
Check if Vulnerable:
Test /signup.php endpoint with SQL injection payloads in the 'city' parameter and observe database errors or unexpected behavior.Check Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Attempt SQL injection attacks against the patched /signup.php endpoint and verify they are blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL syntax in POST parameters to /signup.php
- Multiple failed database queries from single IP
- Database error logs showing SQL syntax errors
Network Indicators:
- HTTP POST requests to /signup.php containing SQL keywords (UNION, SELECT, INSERT, etc.)
- Abnormal request patterns to the signup endpoint
SIEM Query:
source="web_logs" AND uri_path="/signup.php" AND (param="city" AND value MATCHES "(?i)(union|select|insert|delete|drop|--|#)")