Stack Overflow Vulnerability in Tenda G1 and G3 Routers

CVE-2021-45996

Summary

A stack overflow vulnerability exists in the Tenda G1 and G3 routers that can be exploited through the portMappingServer function. Attackers can manipulate various parameters, including portMappingProtocol, portMappingWan, portMappingInternal, and portMappingExternal, to trigger Denial of Service (DoS) conditions. Successful exploitation could render the affected devices inoperable, interrupting network services and impacting users significantly.

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