CVE-2023-36345
📋 TL;DR
A Cross-Site Request Forgery vulnerability in POS Codekop v2.0 allows attackers to trick authenticated users into performing unintended actions, potentially leading to privilege escalation. This affects all users of POS Codekop v2.0 who have administrative or user accounts. Attackers can exploit this to gain higher privileges within the system.
💻 Affected Systems
- POS Codekop
📦 What is this software?
Codekop by Codekop
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative privileges, allowing full system compromise, data theft, and complete control over the POS system.
Likely Case
Attackers escalate privileges to perform unauthorized transactions, modify pricing, or access sensitive customer data.
If Mitigated
With proper CSRF protections, the attack fails and user sessions remain secure with no privilege escalation.
🎯 Exploit Status
Exploitation requires tricking an authenticated user into visiting a malicious page. Public proof-of-concept videos demonstrate the attack.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider implementing CSRF tokens in all state-changing requests or upgrading to a secure version if available.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to all forms and state-changing endpoints in the application code.
Manual code modification required - add CSRF token generation and validation to all POST/PUT/DELETE endpoints
SameSite Cookie Attribute
allSet SameSite=Strict or SameSite=Lax on session cookies to prevent cross-site requests.
Set-Cookie: session=value; SameSite=Strict; Secure; HttpOnly
🧯 If You Can't Patch
- Implement web application firewall rules to detect and block CSRF attempts
- Require re-authentication for sensitive actions and implement double-submit cookie pattern
🔍 How to Verify
Check if Vulnerable:
Check if your POS Codekop installation is version 2.0. Test by attempting to submit a form without CSRF tokens from a different origin.Check Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Verify that all forms include CSRF tokens and that state-changing requests validate these tokens. Test that cross-origin requests are rejected.📡 Detection & Monitoring
Log Indicators:
- Multiple failed privilege escalation attempts
- Unusual admin actions from non-admin users
- Requests missing CSRF tokens
Network Indicators:
- Cross-origin requests to sensitive endpoints
- Requests with mismatched referer headers
SIEM Query:
source="web_logs" AND (uri="/admin/*" OR uri="/user/*") AND (status=200 OR status=302) AND referer NOT CONTAINS "yourdomain.com"