CVE-2024-39090
📋 TL;DR
This vulnerability in PHPGurukul Online Shopping Portal Project version 2.0 allows attackers to perform CSRF attacks that lead to stored XSS. When exploited, it enables execution of arbitrary JavaScript in users' sessions, potentially compromising accounts. Users of this specific e-commerce platform are affected.
💻 Affected Systems
- PHPGurukul Online Shopping Portal Project
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, data theft, and potential administrative access compromise leading to full system control.
Likely Case
Session hijacking of regular users, unauthorized actions performed on behalf of users, and potential data exfiltration.
If Mitigated
Limited impact with proper CSRF tokens and input validation, potentially only minor data manipulation.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) but the attack chain is straightforward once CSRF is achieved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Review the GitHub repository for any updates. 2. Implement CSRF protection tokens on all state-changing requests. 3. Add proper input validation and output encoding for XSS prevention.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to all forms and state-changing endpoints
// PHP example: Generate and validate CSRF tokens
session_start();
$_SESSION['csrf_token'] = bin2hex(random_bytes(32));
// Include in forms: <input type="hidden" name="csrf_token" value="<?php echo $_SESSION['csrf_token']; ?>">
// Validate on submission: if($_POST['csrf_token'] !== $_SESSION['csrf_token']) { die('Invalid CSRF token'); }
Enable Content Security Policy
allImplement CSP headers to restrict script execution
// Add to .htaccess or PHP header
Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
// PHP alternative:
header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Implement WAF rules to detect and block CSRF and XSS patterns
- Restrict user permissions and implement session timeouts to limit exposure
🔍 How to Verify
Check if Vulnerable:
Check if the application lacks CSRF tokens on forms and doesn't properly sanitize user input that gets stored and displayed.Check Version:
Check the application's version file or configuration; typically in config files or about.php pages.Verify Fix Applied:
Test that all forms include unique CSRF tokens and that user input is properly sanitized before storage and display.📡 Detection & Monitoring
Log Indicators:
- Multiple failed CSRF token validations
- Unusual POST requests without referrer headers
- Suspicious JavaScript payloads in form submissions
Network Indicators:
- Requests with malicious script tags in parameters
- Cross-origin requests to sensitive endpoints
SIEM Query:
source="web_logs" AND (csrftoken="missing" OR csrftoken="invalid") OR (uri="*admin*" AND referrer NOT LIKE "%yourdomain%")