Ax12 Firmware Security Vulnerabilities - February 2022

CVE-2021-45391

A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in the goform/setIPv6Status binary file /usr/sbin/httpd via the conType parameter, which causes a Denial of Service.

CVE-2021-45392

A Buffer Overflow vulnerability exists in Tenda Router AX12 V22.03.01.21_CN in the sub_422CE4 function in page /goform/setIPv6Status via the prefixDelegate parameter, which causes a Denial of Service.

CVE-2022-24143

Tenda AX3 v16.03.12.10_CN and AX12 22.03.01.2_CN was discovered to contain a stack overflow in the function form_fast_setting_wifi_set. This vulnerability allows attackers to cause a Denial of Service (DoS) via the timeZone parameter.