CVE-2021-42659: Improper Restriction of Operations within the Bounds of a Memory Buffer

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.196318 and Tenda AC9 V3.0 V15.03.06.42multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs...