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How the mentioned CVE works:
The vulnerability exists in NetBird VPN installations performed using the vendor’s official script. The setup process automatically creates an administrative account within the integrated ZITADEL identity management system. However, the script fails to invalidate or change the default password assigned to this account during deployment. This leaves a known, static credential active on the system. An attacker, aware of this flaw, can use these default credentials to authenticate and gain administrative access to the NetBird management interface. This compromise allows for full control over the VPN infrastructure, enabling the creation or modification of user accounts, manipulation of peer configurations, and potential access to the entire network protected by the VPN. The issue primarily affects script-based installations but can also impact Docker deployments if the default password remains unchanged.
DailyCVE Form:
Platform: NetBird VPN
Version: <0.57.0
Vulnerability : Default Credentials
Severity: Critical
date: 2024-10-20
Prediction: Patch Available
What Undercode Say:
Check NetBird version netbird version Example curl attempt using default credentials (values are illustrative) curl -u admin:defaultpassword https://management.netbird.io/api/endpoint Script to identify potentially vulnerable Docker containers docker ps --filter "ancestor=netbird"
Simple credential testing script (conceptual)
import requests
auth = ('admin', 'default_pass')
response = requests.get('https://[bash]/api/config', auth=auth)
if response.status_code == 200:
print("Vulnerable: Default credentials accepted.")
How Exploit:
1. Identify a NetBird management instance.
2. Use default admin credentials.
3. Authenticate and gain admin privileges.
4. Control VPN peers and settings.
Protection from this CVE:
Upgrade to version 0.57.0.
Manually change all default passwords.
Remove unused default admin accounts.
Employ network access controls.
Impact:
Full VPN infrastructure compromise.
Unauthorized network access.
Data interception and manipulation.
Complete loss of VPN security.
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Sources:
Reported By: github.com
Extra Source Hub:
Undercode
