Discuz! <= 4.0.0 rc4 Arbitrary File Upload Flaw (CVE-2005-2614)

According to its version, the installation of Discuz! on the remote host fails to properly check for multiple extensions in uploaded files.依据其版本，在远程主机上安装Discuz!时，对上传文件中多个扩展名的检查未能得到恰当执行。