1. Introduction
The Zinwave Series 3000 DAS Web Interface Default Credentials vulnerability affects the administration console for remote distributed antenna systems. This system is protected using a known set of administrative credentials, allowing unauthorised access. Businesses operating these systems face potential compromise of operating parameters and configurations. A successful attack could impact confidentiality, integrity, and availability of the network.
2. Technical Explanation
Nessus identified that the Zinwave Series 3000 DAS uses default administrative credentials for login. An attacker can exploit this by using these known credentials to gain access to the web interface. This allows them to view, change or delete operating parameters and switching matrix configurations, potentially disrupting service or gaining further network access.
- Root cause: Use of hardcoded, well-known default administrative credentials.
- Exploit mechanism: An attacker attempts login using the default username and password combination. If successful, they gain full administrative control over the device. For example, an attacker could use a simple HTTP request with the default credentials to access the administration console.
- Scope: Zinwave Series 3000 Distributed Antenna System (DAS) devices are affected.
3. Detection and Assessment
You can confirm if a system is vulnerable by checking the current login configuration, or scanning for known default credentials. A thorough method involves attempting to log in with the default username and password.
- Quick checks: Access the web interface and check user account details within the administration settings.
- Scanning: Nessus vulnerability ID 168297 can detect this issue. Other scanners may have similar signatures.
- Logs and evidence: Examine system logs for successful logins from default accounts or failed login attempts followed by a successful login with default credentials.
# No command available to check directly, access the web interface is required.4. Solution / Remediation Steps
Change the passwords on any default accounts used for accessing the administration console.
4.1 Preparation
- There are no specific dependencies for this fix. Change control approval may be needed depending on your organisation’s policies.
4.2 Implementation
- Step 1: Log in to the Zinwave Series 3000 DAS web interface using the current default credentials.
- Step 2: Navigate to the user account settings section within the administration console.
- Step 3: Change the password for all default accounts to strong, unique passwords.
- Step 4: Log out of the web interface and verify that you can no longer log in with the old credentials.
4.3 Config or Code Example
This fix involves changing a user account password via the web interface.
Before
Username: admin
Password: passwordAfter
Username: admin
Password: YourStrongNewPassword!4.4 Security Practices Relevant to This Vulnerability
Several security practices can help prevent this type of issue.
- Practice 1: Least privilege – limit access rights for user accounts to only what is necessary, reducing the impact if an account is compromised.
- Practice 2: Safe defaults – avoid using default credentials and enforce strong password policies from initial setup.
4.5 Automation (Optional)
Automation of this process may be possible via API scripting depending on the device’s capabilities, but requires careful testing.
# No script available as it depends on the specific API and access methods for Zinwave Series 3000 DAS.5. Verification / Validation
Confirm the fix by attempting to log in with the old default credentials, which should now fail. Then verify that you can log in with the new password.
- Post-fix check: Attempt to login using the original default username and password. Expected output: Login failed.
- Re-test: Re-run Nessus vulnerability scan 168297; it should no longer report the issue.
- Monitoring: Monitor system logs for failed login attempts with default credentials, which could indicate an ongoing attack.
# Attempt to log in via web interface using default credentials - should fail.6. Preventive Measures and Monitoring
Regular security assessments and policy enforcement can help prevent this vulnerability.
- Baselines: Update your system hardening baseline or security policy to include a requirement for changing default passwords on all new devices.
- Asset and patch process: Review configuration settings during regular asset audits, ensuring no default credentials remain in use.
7. Risks, Side Effects, and Roll Back
Changing passwords could temporarily disrupt access if the new password is forgotten or incorrectly entered. Always have a documented roll back plan.
- Risk or side effect 1: Loss of access to the administration console if the new password is lost. Mitigation: Document the new password securely and ensure multiple administrators know it.
8. References and Resources
Refer to official Zinwave documentation for further information.
- Vendor advisory or bulletin: https://www.zinwave.com/das-solutions-0