CVE-2024-55056
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in Phpgurukul Online Birth Certificate System 1.0 allows attackers to inject malicious scripts via the full name field in certificate-form.php. When a user views the affected page, the script executes in their browser context, potentially compromising their session or stealing sensitive data. This affects all users of the vulnerable system version.
💻 Affected Systems
- Phpgurukul Online Birth Certificate System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator credentials, take full control of the system, manipulate birth certificate data, and potentially pivot to other systems.
Likely Case
Session hijacking, credential theft from users viewing malicious certificates, and defacement of certificate pages.
If Mitigated
Limited to minor data manipulation if proper input validation and output encoding are implemented.
🎯 Exploit Status
Exploitation requires user-level access to submit certificate forms. Public proof-of-concept demonstrates the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Implement input validation and output encoding in certificate-form.php. Sanitize user input in the full name field before storage and display.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side validation to reject malicious input and encode output to prevent script execution.
Edit certificate-form.php to add: htmlspecialchars($fullname, ENT_QUOTES, 'UTF-8') before output
Add input validation: preg_match('/^[a-zA-Z\s]+$/', $fullname)
Content Security Policy (CSP)
allImplement CSP headers to restrict script execution sources.
Add to .htaccess or PHP header: Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Disable user certificate submission functionality temporarily
- Implement web application firewall (WAF) rules to block XSS payloads in the full name parameter
🔍 How to Verify
Check if Vulnerable:
Submit a test payload like <script>alert('XSS')</script> in the full name field of certificate-form.php and check if it executes when viewing the certificate.Check Version:
Check system documentation or configuration files for version information. No standard command available.Verify Fix Applied:
After implementing fixes, test with the same payload to ensure it's properly sanitized and doesn't execute.📡 Detection & Monitoring
Log Indicators:
- Unusual characters in full name fields (e.g., <script>, javascript:)
- Multiple certificate submissions from single user with suspicious content
Network Indicators:
- HTTP requests with script tags in POST parameters to certificate-form.php
SIEM Query:
source="web_logs" AND (uri="/user/certificate-form.php" AND (param="fullname" CONTAINS "<script>" OR param="fullname" CONTAINS "javascript:"))