Executive Summary

The vulnerability affects NetComm NF20MESH routers running firmware R6B031 and earlier. It is an authentication bypass flaw caused by the use of a hardcoded AES-256 encryption key for session cookies in the router's web management interface.

Attackers who are unauthenticated can exploit this by forging valid encrypted session cookies using the shared hardcoded key. This allows them to bypass authentication checks and gain full administrative access to the router's management interface while any legitimate administrator session is active.

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Impact Analysis

This vulnerability can have a severe impact as it allows unauthenticated attackers to gain full administrative control over the affected router's management interface.

• Attackers can change router settings, potentially disrupting network operations.
• They can intercept or redirect network traffic, leading to data theft or manipulation.
• The attacker could create persistent backdoors or disable security features.
• Overall, this can compromise the security and integrity of the entire network connected to the router.

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade the firmware of your NetComm NF20MESH routers to a version later than R6B031, as the vulnerability affects firmware R6B031 and earlier.

Avoid using the affected firmware versions and monitor the vendor's support page for updated firmware releases that address this authentication bypass issue.

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Compliance Impact

The provided information does not specify how the authentication bypass vulnerability in NetComm NF20MESH routers impacts compliance with common standards and regulations such as GDPR or HIPAA.

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