CVE-2024-53356
📋 TL;DR
This vulnerability allows remote attackers to generate valid JWT tokens using a hardcoded weak secret, enabling privilege escalation in affected EasyVirt products. Attackers can access sensitive information and perform unauthorized actions within the application. Organizations using EasyVirt DCScope ≤8.6.0 or CO2Scope ≤1.3.0 are affected.
💻 Affected Systems
- EasyVirt DCScope
- EasyVirt CO2Scope
📦 What is this software?
Co2scope by Easyvirt
Dcscope by Easyvirt
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where attackers gain administrative privileges, access all data, and execute arbitrary commands within the application.
Likely Case
Unauthorized access to sensitive data and functionality, potentially leading to data theft, configuration changes, or service disruption.
If Mitigated
Limited impact with proper network segmentation and monitoring, though authentication bypass remains possible.
🎯 Exploit Status
Exploitation requires understanding JWT token generation but uses predictable hardcoded secret.
🛠️ 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. Upgrade to latest version of DCScope (>8.6.0) or CO2Scope (>1.3.0). 2. Verify the hardcoded secret has been replaced with a secure random value. 3. Invalidate all existing JWT tokens.
🔧 Temporary Workarounds
Implement External JWT Validation
allDeploy a reverse proxy or API gateway that validates JWT tokens using a custom secret before forwarding requests to the application.
🧯 If You Can't Patch
- Isolate affected systems behind strict network segmentation to limit attack surface.
- Implement comprehensive monitoring for unusual authentication patterns or privilege escalation attempts.
🔍 How to Verify
Check if Vulnerable:
Check application version in admin interface or configuration files. If DCScope ≤8.6.0 or CO2Scope ≤1.3.0, system is vulnerable.Check Version:
Check application documentation for version command, typically in admin interface or configuration files.Verify Fix Applied:
Verify upgraded version and attempt to generate JWT token using hardcoded secret 'somerandomaccesstoken' - should fail validation.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful login with unusual privileges
- JWT token generation from unexpected IP addresses
Network Indicators:
- Unusual API calls to authentication endpoints
- Requests with self-generated JWT tokens
SIEM Query:
source="application_logs" AND (event="authentication_success" AND user="*" AND ip NOT IN [trusted_ips]) OR (event="jwt_generation" AND secret="somerandomaccesstoken")