CVE-2021-47892
📋 TL;DR
PEEL Shopping 9.3.0 contains a stored cross-site scripting vulnerability in the 'Comments / Special Instructions' field of the purchase page. Attackers can inject malicious JavaScript that executes when users view or refresh the page, potentially stealing session cookies, redirecting users, or performing actions on their behalf. This affects all PEEL Shopping 9.3.0 installations with the vulnerable purchase page functionality.
💻 Affected Systems
- PEEL Shopping
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full administrative access to the shopping platform, modify product prices, steal customer payment information, or deploy malware to site visitors.
Likely Case
Attackers steal user session cookies to hijack accounts, redirect users to phishing sites, or deface the purchase page with malicious content.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before execution, preventing client-side attacks.
🎯 Exploit Status
Exploit requires attacker to have purchase page access (typically customer access). The vulnerability is stored, meaning payload persists until removed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://web.archive.org/web/20210302174407/https://www.peel.fr/
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. If patch exists, download and install. 3. Test purchase page functionality after update.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side validation to sanitize user input in the Comments/Special Instructions field and encode output before rendering in HTML.
Content Security Policy (CSP)
allImplement a strict CSP header to prevent execution of inline scripts and restrict script sources to trusted domains only.
Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Disable the Comments/Special Instructions field in the purchase page configuration if not essential for business operations.
- Implement a web application firewall (WAF) with XSS protection rules to filter malicious payloads before they reach the application.
🔍 How to Verify
Check if Vulnerable:
Test by submitting a simple XSS payload like <script>alert('XSS')</script> in the Comments/Special Instructions field during purchase and check if it executes when page is refreshed.Check Version:
Check PEEL Shopping admin panel or configuration files for version information. Typically found in admin dashboard or /admin/ section.Verify Fix Applied:
After applying fixes, repeat the test with the same payload. The script should not execute and should appear as plain text or be sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusually long or script-like entries in purchase comment logs
- Multiple failed purchase attempts with suspicious comment content
Network Indicators:
- HTTP requests containing script tags or JavaScript code in comment parameters
- Unexpected redirects from purchase pages
SIEM Query:
source="web_logs" AND (uri="/purchase" OR uri="/checkout") AND (comment CONTAINS "<script>" OR comment CONTAINS "javascript:")