BaseFortify

Executive Summary

This vulnerability is a remote code execution flaw in the Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router version 1.3.241114.024540 and earlier. An attacker can exploit it by sending a specially crafted request to the www\cgi-bin\upgrade file to execute arbitrary code on the device.

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Detection Guidance

Check for unauthorized access to the /cgi-bin/upgrade endpoint by monitoring HTTP POST requests to this path. Look for unusual command injection patterns in query parameters, especially those using decimal IP encoding (e.g., 3232235692 instead of 192.168.0.172). Inspect network traffic for reverse shell connections initiated from the router.

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Impact Analysis

If exploited, this vulnerability could allow an attacker to take full control of the affected router. This may lead to network compromise, unauthorized access to connected devices, interception of network traffic, or disruption of network services.

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Compliance Impact

This vulnerability allows unauthenticated remote code execution on affected Netcore routers, which could lead to unauthorized access to sensitive data transmitted or stored by the device. For GDPR, this may result in breaches of personal data confidentiality. Under HIPAA, it could expose protected health information if the router is used in a healthcare environment. Both standards require strict access controls and encryption to protect data integrity and confidentiality.

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Mitigation Strategies

Isolate the affected router from the network immediately. Disable remote administration features if enabled. Update the firmware to the latest version if a patch is available. Block external access to the /cgi-bin/upgrade endpoint at the firewall level. Monitor for signs of compromise such as unexpected outbound connections.

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