CVE-2021-47911
📋 TL;DR
Affiliate Pro 1.7 contains reflected cross-site scripting vulnerabilities in index module input fields (fullname, username, email). Attackers can inject malicious scripts to steal session cookies, redirect users, or perform actions on their behalf. This affects all users of Affiliate Pro 1.7 who haven't applied input validation/sanitization.
💻 Affected Systems
- Affiliate Pro Affiliate Management System
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of the affiliate management system, and compromise all user data including financial information.
Likely Case
Attackers steal user session cookies to hijack accounts, redirect users to phishing sites, or deface pages with malicious content.
If Mitigated
With proper input validation and output encoding, scripts are neutralized before execution, preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) but is technically simple with publicly available proof-of-concept examples.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://jdwebdesigner.com/
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. If no patch available, implement input validation and output encoding. 3. Sanitize fullname, username, and email parameters before processing.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF rules to block XSS payloads in URL parameters
Input Validation Filter
allAdd server-side validation to reject malicious input patterns
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Deploy reverse proxy with XSS filtering for the affected endpoints
🔍 How to Verify
Check if Vulnerable:
Test by injecting <script>alert('XSS')</script> into fullname, username, or email parameters in index module URLs and check if script executes.Check Version:
Check version in admin panel or review source code comments for version information.Verify Fix Applied:
Repeat XSS test payloads and verify scripts are properly sanitized/encoded and do not execute.📡 Detection & Monitoring
Log Indicators:
- Unusual long parameter values in access logs
- Script tags or JavaScript in URL parameters
- Multiple failed login attempts with suspicious parameters
Network Indicators:
- HTTP requests with script tags in query parameters
- Redirects to unexpected domains from index module
SIEM Query:
source="web_access_logs" AND (url="*<script>*" OR url="*javascript:*" OR url="*onerror=*" OR url="*onload=*")🔗 References
- https://codecanyon.net/item/affiliate-pro-affiliate-management-system/12908496
- https://jdwebdesigner.com/
- https://www.vulncheck.com/advisories/affiliate-pro-reflected-cross-site-scripting-via-index-module
- https://www.vulnerability-lab.com/get_content.php?id=2281
- https://www.vulnerability-lab.com/get_content.php?id=2281