Detections
Analytics
CVE-2018-5721
high
Description
Stack-based buffer overflow in the ej_update_variables function in router/httpd/web.c on ASUS routers (when using software from https://github.com/RMerl/asuswrt-merlin) allows web authenticated attackers to execute code via a request that updates a setting. In ej_update_variables, the length of the variable action_script is not checked, as long as it includes a "_wan_if" substring.
References
http://www.w0lfzhang.com/2018/01/17/ASUS-router-stack-overflow-in-http-server/