Design/Logic Flaw

TP-Link TL-WVR, TL-WAR, TL-ER, and TL-R devices allow remote authenticated users to execute arbitrary commands via shell metacharacters in the t_bindif field of an admin/bridge command to cgi-bin/luci, related to the get_device_byif function in /usr/lib/lua/luci/controller/admin/bridge.lua in uhttpd.