A vulnerability has been found in Beetel 777VR1 up to 01.00.09. The impacted element is an unknown function of the component Web Management Interface. The manipulation leads to hard-coded credentials. The attack needs to be initiated within the local network. The exploit has been disclosed to the public and may be used. It is advisable to modify the configuration settings. The vendor was contacted early about this disclosure but did not respond in any way.
Beetel 777VR1 routers are vulnerable to a critical security flaw allowing for unauthorized access via hard-coded credentials within the Web Management Interface. This vulnerability, publicly disclosed and unpatched, enables attackers on the local network to potentially fully compromise the device, leading to network control and data exfiltration.
Step 1: Network Reconnaissance: The attacker identifies a Beetel 777VR1 router on the local network. Step 2: Web Interface Access: The attacker attempts to access the router's Web Management Interface, typically via HTTP or HTTPS on port 80 or 443. Step 3: Credential Injection: The attacker uses the known hard-coded credentials to log in to the web interface. These credentials are likely publicly available due to the disclosure. Step 4: Configuration Manipulation: Upon successful login, the attacker gains administrative access and can modify the router's configuration. Step 5: Network Compromise: The attacker can then reconfigure the router, potentially redirecting traffic, installing malware, or gaining access to the internal network.
The vulnerability stems from the use of hard-coded credentials within the Web Management Interface of the Beetel 777VR1 router. The specific function responsible for authentication likely fails to properly validate user input or retrieve credentials securely. This flaw allows an attacker to bypass authentication by leveraging these pre-defined credentials, granting them administrative access to the router's configuration and potentially the connected network. The root cause is a lack of secure coding practices, specifically the absence of proper authentication mechanisms and the storage of sensitive information in plain text within the device's firmware.
While no specific APTs are directly linked to this CVE, the ease of exploitation and the potential for network compromise make it attractive to various threat actors. This could be used by opportunistic attackers, or as a stepping stone for more sophisticated attacks. Not listed on CISA KEV due to the lack of widespread reporting.
Monitor network traffic for unusual activity originating from the router's IP address.
Analyze router logs for suspicious login attempts or configuration changes.
Implement intrusion detection systems (IDS) to identify attempts to access the Web Management Interface with known hard-coded credentials.
Check for unexpected outbound connections from the router to external IP addresses.
Monitor for changes to DNS settings or other network configurations.
Replace the affected router with a device from a different vendor that is actively maintained and receives security updates.
If replacement is not immediately possible, isolate the router on a separate VLAN to limit the impact of a compromise.
Disable remote management of the router's web interface.
Monitor network traffic for any suspicious activity originating from the router.
Consider implementing a network segmentation strategy to limit the blast radius of a potential compromise.
Contact the vendor to pressure them to release a patch or provide mitigation steps.