CVE-2020-19047
📋 TL;DR
This CSRF vulnerability in iWebShop v5.3 allows attackers to trick authenticated administrators into executing arbitrary code via a malicious POST request. Attackers can compromise the entire system by exploiting admin privileges through forged requests. All iWebShop v5.3 installations with admin interfaces accessible to users are affected.
💻 Affected Systems
- iWebShop
📦 What is this software?
Iwebshop by Iwebshop
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, data theft, and potential lateral movement to other systems.
Likely Case
Unauthorized administrative actions, configuration changes, or data manipulation through forged admin requests.
If Mitigated
Limited impact with proper CSRF protections, though some administrative functions could still be vulnerable.
🎯 Exploit Status
Exploitation requires tricking an authenticated admin into clicking a malicious link or visiting a crafted page.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing CSRF protections manually.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all admin forms and validate them on POST requests.
Modify /index.php?controller=system&action=admin_edit_act to include and validate CSRF tokens
Restrict Admin Access
allLimit admin interface access to specific IP addresses or VPN-only connections.
Add IP restrictions in .htaccess or web server configuration for admin paths
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious POST requests to admin endpoints
- Monitor admin activity logs for unusual POST requests from unexpected sources
🔍 How to Verify
Check if Vulnerable:
Check if /index.php?controller=system&action=admin_edit_act accepts POST requests without CSRF token validation when admin is logged in.Check Version:
Check iWebShop version in admin panel or configuration filesVerify Fix Applied:
Test that POST requests to the vulnerable endpoint now require valid CSRF tokens and reject forged requests.📡 Detection & Monitoring
Log Indicators:
- Multiple POST requests to /index.php?controller=system&action=admin_edit_act from unusual IPs or user agents
- Admin actions performed without corresponding admin login events
Network Indicators:
- POST requests to admin endpoints with missing or invalid Referer headers
- Unusual traffic patterns to admin interfaces
SIEM Query:
source="web_logs" AND uri="/index.php?controller=system&action=admin_edit_act" AND method="POST" AND (NOT referer CONTAINS "expected_domain")