Unauthenticated Command Injection in WODESYS WD-R608U Router

Mitigation Strategies

To mitigate this vulnerability, immediately restrict access to the adm.cgi endpoint on the WODESYS WD-R608U router to trusted users only, preferably by network segmentation or firewall rules. Since the vulnerability allows unauthenticated command execution, avoid exposing the device's management interface to untrusted networks. Additionally, monitor for any unusual device behavior such as unexpected restarts or configuration changes. Contact the vendor for any available patches or updates, although no details or fixes have been provided yet.

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Executive Summary

This vulnerability exists in the WODESYS WD-R608U router (also known as WDR122B V2.0 and WDR28) due to a lack of authentication in the configuration change module at the adm.cgi endpoint. An unauthenticated attacker can exploit this to execute commands such as creating backups, restarting the device, and resetting it to factory settings.

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Impact Analysis

The vulnerability allows an unauthenticated attacker to execute critical commands on the affected router, including creating backups, restarting the device, and resetting it to factory settings. This can lead to unauthorized control, disruption of network services, loss of configuration, and potential exposure of sensitive information.

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