Source: vulnreport@tenable.com
Netgear Nighthawk R6700 version 1.0.4.120 stores sensitive information in plaintext. All usernames and passwords for the device's associated services are stored in plaintext on the device. For example, the admin password is stored in plaintext in the primary configuration file on the device.
Critical vulnerability exists in Netgear Nighthawk R6700 routers, exposing all user credentials, including the administrator password, in plaintext. This allows attackers to gain complete control of the device and potentially the network it protects, leading to severe data breaches and network compromise.
Step 1: Reconnaissance: Identify vulnerable devices using network scanning tools (e.g., Nmap) to detect Netgear R6700 routers, specifically those running firmware version 1.0.4.120. Step 2: Access the Configuration File: Determine the location of the configuration file on the device. This might involve accessing the device's web interface, using default credentials, or exploiting other vulnerabilities to gain initial access. Step 3: File Retrieval: Download the configuration file from the router. This can be achieved through various methods, including direct file access via HTTP/HTTPS or exploiting other vulnerabilities to gain shell access. Step 4: Credential Extraction: Open the downloaded configuration file using a text editor. The plaintext usernames and passwords for all services (including the admin password) will be readily visible. Step 5: Privilege Escalation: Use the extracted credentials to log into the router's web interface or other services, gaining full control of the device and potentially the network.
The vulnerability stems from insecure storage practices within the Netgear R6700's firmware. The configuration files, which store crucial device settings and user credentials, are designed to store sensitive information in plaintext format. This indicates a failure to implement secure password hashing or encryption mechanisms. The root cause is likely a design flaw where the developers prioritized ease of access and configuration over security, leading to the direct storage of sensitive data without any protection. The lack of proper security measures, such as password hashing algorithms (e.g., bcrypt, Argon2) and encryption, makes the device highly susceptible to credential theft.
While no specific APT groups are definitively linked to exploiting this vulnerability, the ease of exploitation makes it attractive to a wide range of threat actors, including script kiddies and financially motivated attackers. The vulnerability's impact on network security makes it a prime target for initial access and lateral movement. CISA KEV status: Not listed, but should be considered a high-priority vulnerability.
Network traffic analysis: Look for unusual HTTP/HTTPS traffic patterns to the router, especially attempts to download configuration files.
File system analysis: Examine the router's file system for suspicious file downloads or modifications, particularly related to configuration files.
Log analysis: Review router logs for unauthorized logins, configuration changes, or attempts to access sensitive areas.
Honeypot deployment: Deploy a honeypot mimicking a vulnerable R6700 to attract and analyze attacker activity.
IDS/IPS signatures: Implement signatures to detect attempts to download configuration files or access the router's configuration interface.
Upgrade Firmware: Update the Netgear R6700 firmware to the latest version, which should address the plaintext storage issue. Check Netgear's website for the latest firmware updates.
Change Default Credentials: Immediately change the default administrator password to a strong, unique password.
Disable Remote Management: Disable remote management access to the router if not required. This reduces the attack surface.
Implement Network Segmentation: Segment the network to limit the impact of a compromised router. Place critical assets on a separate VLAN.
Monitor Network Traffic: Regularly monitor network traffic for suspicious activity, such as unauthorized access attempts or data exfiltration.
Enable Two-Factor Authentication (if available): Enable two-factor authentication for the router's administrative interface, if supported by the firmware.
Regular Security Audits: Conduct regular security audits and penetration tests to identify and address vulnerabilities.