CVE-2024-53355
📋 TL;DR
This CVE describes multiple incorrect access control vulnerabilities in EasyVirt DCScope and CO2Scope management software. Remote authenticated attackers with low privileges can perform administrative actions like creating admin users, modifying groups, and managing roles. All organizations running affected versions of these products are vulnerable.
💻 Affected Systems
- EasyVirt DCScope
- EasyVirt CO2Scope
📦 What is this software?
Co2scope by Easyvirt
Dcscope by Easyvirt
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative control over the system, allowing them to create persistent backdoors, exfiltrate sensitive data, disrupt operations, and potentially pivot to other systems.
Likely Case
Attackers elevate privileges to gain administrative access, modify user accounts and permissions, and potentially access sensitive management data.
If Mitigated
With proper network segmentation and access controls, impact is limited to the management system itself without lateral movement.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward via API calls. Attackers need only low-privilege credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: DCScope > 8.6.0, CO2Scope > 1.3.0
Vendor Advisory: Not provided in references
Restart Required: No
Instructions:
1. Check current version. 2. Upgrade to latest version beyond affected ranges. 3. Verify API endpoints now enforce proper authorization checks.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to management interfaces to only trusted administrative networks
API Endpoint Blocking
allUse WAF or reverse proxy to block unauthorized access to vulnerable API endpoints
🧯 If You Can't Patch
- Implement strict network segmentation to isolate management interfaces
- Enforce principle of least privilege for all user accounts and monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check version numbers in system settings or via version API endpoints. If DCScope <= 8.6.0 or CO2Scope <= 1.3.0, system is vulnerable.Check Version:
Check system administration interface or consult product documentation for version checking methodVerify Fix Applied:
After upgrade, test API endpoints with low-privilege accounts to ensure they now return authorization errors instead of allowing administrative actions.📡 Detection & Monitoring
Log Indicators:
- Unusual API calls to user/group/role management endpoints from non-admin accounts
- Multiple failed authorization attempts followed by successful administrative actions
Network Indicators:
- POST/PUT requests to /api/user/* endpoints from unexpected source IPs
- Pattern of API calls that follow privilege escalation sequence
SIEM Query:
source="easylvirt" AND (uri_path="/api/user/addalias" OR uri_path="/api/user/updatealias" OR uri_path="/api/user/delalias" OR uri_path="/api/user/adduser" OR uri_path="/api/user/updateuser" OR uri_path="/api/user/deluser" OR uri_path="/api/user/addrole" OR uri_path="/api/user/updaterole" OR uri_path="/api/user/delrole") AND user_role!="admin"