CVE-2023-43317
📋 TL;DR
This vulnerability allows remote attackers to escalate privileges in Coign CRM Portal v.06.06 by manipulating the userPermissionsList parameter in the Session Storage component. Attackers can gain administrative access without proper authentication. Organizations using this specific version of Coign CRM Portal are affected.
💻 Affected Systems
- Coign CRM Portal
📦 What is this software?
Coign by Coign
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where attackers gain administrative privileges, access sensitive customer data, modify system configurations, and potentially deploy ransomware or other malware.
Likely Case
Unauthorized privilege escalation leading to data theft, unauthorized access to CRM functions, and potential lateral movement within the network.
If Mitigated
Limited impact with proper network segmentation, strong authentication controls, and monitoring in place to detect privilege escalation attempts.
🎯 Exploit Status
Exploit requires some level of access but privilege escalation is straightforward once initial access is obtained. Public proof-of-concept code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates or consider upgrading to newer supported versions if available.
🔧 Temporary Workarounds
Session Validation Enhancement
allImplement server-side validation of session permissions to prevent client-side manipulation
Implement server-side validation in session management code to verify userPermissionsList integrity
Access Control Hardening
allImplement additional authentication checks for sensitive operations
Add multi-factor authentication for administrative functions
Implement role-based access control with server-side validation
🧯 If You Can't Patch
- Isolate Coign CRM Portal behind a web application firewall (WAF) with rules to detect privilege escalation attempts
- Implement strict network segmentation to limit the CRM portal's access to other systems
- Enable detailed logging of all session changes and permission modifications
- Implement regular credential rotation and monitor for unusual privilege changes
🔍 How to Verify
Check if Vulnerable:
Check if running Coign CRM Portal version 06.06. Attempt to manipulate userPermissionsList parameter in session storage and observe if privilege escalation occurs.Check Version:
Check application version in admin panel or configuration files. Look for version 06.06 in application metadata.Verify Fix Applied:
Test if session permission manipulation no longer results in privilege escalation. Verify server-side validation is properly implemented.📡 Detection & Monitoring
Log Indicators:
- Unusual session permission changes
- Multiple privilege escalation attempts
- Administrative actions from non-admin accounts
- Modified userPermissionsList parameters in logs
Network Indicators:
- Unusual patterns of session manipulation requests
- Multiple failed privilege escalation attempts followed by successful ones
SIEM Query:
source="coign_crm" AND (event_type="session_modification" OR user_permissions_changed="true") AND user_role_changed="true"