1. Introduction
Yosemite Backup Service Driver Detection indicates a database service is running on your network, specifically Yosemite Backup software. This backup solution targets small to medium sized businesses using Windows, Linux and Novell NetWare systems. A listening database service presents an attack surface that could allow unauthorised access to backed-up data. Confidentiality, integrity and availability of backups may be impacted if exploited.
2. Technical Explanation
Yosemite Backup includes a database component which listens for connections. This is normal operation but creates a remote exposure point. An attacker could attempt to connect to the database service to gain access to backup data or potentially compromise the host system. There is no known CVE associated with this specific detection, however it represents an increased risk due to the exposed service. A realistic example would be an attacker using standard database tools to enumerate users and attempt brute-force attacks against the database credentials.
- Root cause: The Yosemite Backup database service listens on a network port by default.
- Exploit mechanism: An attacker attempts to connect to the database service, potentially exploiting weak or default credentials.
- Scope: Windows, Linux and Novell NetWare systems running Yosemite Backup software.
3. Detection and Assessment
- Quick checks: Use Task Manager on Windows to look for Yosemite Backup processes or use
netstat -an | find "Yosemite"in a command prompt. - Scanning: Nessus plugin ID 165329 may identify the service, but results should be verified.
- Logs and evidence: Check Windows Event Logs for Yosemite Backup related events.
netstat -an | find "Yosemite"4. Solution / Remediation Steps
These steps provide a precise way to fix the issue by reviewing network exposure and access controls. Only apply these steps to systems running Yosemite Backup software.
4.1 Preparation
- Ensure you have administrator credentials for the affected systems. A roll back plan is to restore from the pre-change snapshot.
- A change window may be needed depending on business impact. Approval should be sought from the IT Manager.
4.2 Implementation
- Step 1: Review the Yosemite Backup configuration for network access settings. Ensure only necessary IP addresses are allowed to connect.
- Step 2: Change the default database credentials to strong, unique passwords.
- Step 3: If possible, restrict the database service to listen on localhost (127.0.0.1) instead of all interfaces.
4.3 Config or Code Example
Before
Listening on: 0.0.0.0 (all interfaces)After
Listening on: 127.0.0.1 (localhost only)4.4 Security Practices Relevant to This Vulnerability
These practices directly address the risks associated with exposed services and database security.
- Practice 1: Least privilege access controls limit damage if an attacker gains access.
- Practice 2: Strong password policies prevent brute-force attacks against database credentials.
4.5 Automation (Optional)
# Example PowerShell script to check listening ports
Get-NetTCPConnection | Where-Object {$_.LocalPort -eq 1433} # Replace 1433 with Yosemite Backup port
5. Verification / Validation
Confirm the fix worked by checking network access and re-running detection methods. A smoke test will ensure backups are still functioning.
- Post-fix check: Run
netstat -an | find "Yosemite"again, expecting no results if listening on localhost only. - Re-test: Re-run the Nessus scan (ID 165329) to confirm it no longer detects the service.
- Monitoring: Check Windows Event Logs for Yosemite Backup errors or connection attempts from unexpected IP addresses.
netstat -an | find "Yosemite"6. Preventive Measures and Monitoring
These measures help prevent similar issues in the future by improving security baselines and asset management.
- Baselines: Update your system hardening baseline to include restrictions on network listening ports for all database services.
- Asset and patch process: Review the vendor’s security advisories regularly and apply patches promptly.
7. Risks, Side Effects, and Roll Back
- Risk or side effect 1: Restricting network access may prevent legitimate backups if not configured correctly.
- Risk or side effect 2: Changing database credentials could disrupt existing backup jobs if not updated in all configurations.
- Roll back: Restore from the pre-change system snapshot. Revert the Yosemite Backup configuration to its original settings.
8. References and Resources
- Vendor advisory or bulletin: https://www.barracuda.com/products/backup