CVE-2025-67305: RUCKUS Network Director Auth Bypass Flaw

CVE-2025-67305 Overview

A critical security vulnerability exists in RUCKUS Network Director (RND) versions prior to 4.5.0.56 where the OVA appliance contains hardcoded SSH keys for the postgres user. These cryptographic keys are identical across all deployments of the affected appliance, creating a significant security risk. An attacker with network access to the appliance can authenticate via SSH without requiring a password, bypassing standard authentication controls entirely.

Once authenticated through the hardcoded SSH keys, the attacker gains access to the PostgreSQL database with superuser privileges. This level of access enables the creation of administrative users for the web interface and provides a pathway for further privilege escalation within the network management infrastructure.

Critical Impact

Attackers with network access can leverage hardcoded SSH keys to gain unauthorized database superuser access, create admin accounts, and potentially achieve full system compromise of RUCKUS Network Director deployments.

Affected Products

• RUCKUS Network Director (RND) versions prior to 4.5.0.56
• RUCKUS Network Director OVA appliance deployments

Discovery Timeline

• 2026-02-19 - CVE CVE-2025-67305 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2025-67305

Vulnerability Analysis

This vulnerability represents a classic case of hardcoded credentials, specifically involving SSH private keys embedded within the OVA appliance image. The fundamental security flaw stems from the deployment of identical cryptographic material across all instances of the RUCKUS Network Director appliance. When SSH keys are hardcoded and shared across deployments, any attacker who extracts these keys from one installation can use them to authenticate to any other deployment of the same product.

The vulnerability chain enables significant escalation: initial SSH access leads to PostgreSQL superuser access, which then enables administrative web interface access. This cascading privilege model transforms what might appear as a single credential issue into a complete compromise scenario.

Root Cause

The root cause of this vulnerability is the inclusion of static, pre-generated SSH key pairs within the OVA appliance image for the postgres user account. During the appliance build or packaging process, SSH keys were generated and embedded into the image rather than being generated uniquely during the initial deployment or first boot of each appliance instance. This design decision, likely made for convenience or consistency during development, violates fundamental cryptographic key management principles that require unique keys per deployment.

Attack Vector

The attack vector requires network connectivity to the SSH service running on the RUCKUS Network Director appliance. An attacker would need to:

1. Obtain the hardcoded SSH private key from a known RUCKUS Network Director deployment or from publicly disclosed sources
2. Identify target RUCKUS Network Director appliances accessible over the network
3. Connect via SSH as the postgres user using the extracted private key
4. Leverage PostgreSQL superuser privileges to manipulate the database
5. Create administrative accounts in the web interface or execute additional commands

The vulnerability does not require any prior authentication and can be exploited remotely by anyone with network access to the appliance's SSH port. For additional technical details, refer to the GitHub Advisory MCSAID-2025-012 and the CommScope Security Advisory.

Detection Methods for CVE-2025-67305

Indicators of Compromise

• Unexpected SSH connections to the RUCKUS Network Director appliance targeting the postgres user account
• New administrative user accounts appearing in the web interface without authorized creation
• Unusual PostgreSQL database queries or modifications, particularly to user/credential tables
• SSH authentication logs showing successful postgres user logins from unexpected source IP addresses

Detection Strategies

• Monitor SSH authentication logs on RUCKUS Network Director appliances for postgres user login attempts
• Implement network-level monitoring for SSH connections to network management appliances from unauthorized sources
• Audit the web interface administrative user list regularly for unauthorized accounts
• Deploy network intrusion detection rules to identify SSH connection patterns targeting management appliances

Monitoring Recommendations

• Enable verbose SSH logging on RUCKUS Network Director appliances to capture all authentication events
• Configure SIEM alerts for any successful SSH authentication as the postgres user
• Implement database audit logging within PostgreSQL to track superuser operations
• Establish baseline network behavior for the appliance and alert on anomalous SSH traffic patterns

How to Mitigate CVE-2025-67305

Immediate Actions Required

• Upgrade RUCKUS Network Director to version 4.5.0.56 or later immediately
• Restrict network access to the SSH port on RUCKUS Network Director appliances using firewall rules or network segmentation
• Audit existing administrative accounts in the web interface for any unauthorized additions
• Review PostgreSQL database for unauthorized modifications or suspicious entries

Patch Information

CommScope has addressed this vulnerability in RUCKUS Network Director version 4.5.0.56 and later releases. Organizations should obtain the updated software through official CommScope/RUCKUS support channels. Review the CommScope Security Advisory for complete patch details and upgrade instructions.

Workarounds

• Implement strict network access controls to limit SSH connectivity to the appliance from trusted management networks only
• Regenerate SSH keys for the postgres user on existing deployments if vendor-supported procedures exist
• Place RUCKUS Network Director appliances on isolated management networks with strict firewall policies
• Monitor for exploitation attempts while planning upgrade activities

# Example firewall rule to restrict SSH access to management network only
# Adjust interface and IP ranges according to your environment
iptables -A INPUT -p tcp --dport 22 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j DROP