bugtraq id 1328
　　class Design Error
　　cve CVE-2000-0499
　　remote Yes
　　local Yes
　　published June 08, 2000
　　updated November 10, 2000
　　vulnerable BEA Systems Weblogic 4.5.1
　　- Microsoft Windows NT 4.0
　　BEA Systems Weblogic 4.0.4
　　- Microsoft Windows NT 4.0
　　BEA Systems Weblogic 3.1.8
　　- Microsoft Windows NT 4.0
　　IBM Websphere Application Server 3.0.21
　　- Sun Solaris 8.0
　　- Microsoft Windows NT 4.0
　　- Linux kernel 2.3.x
　　- IBM AIX 4.3
　　Unify eWave ServletExec 3.0
　　- Sun Solaris 8.0
　　- Microsoft Windows 98
　　- Microsoft Windows NT 4.0
　　- Microsoft Windows NT 2000
　　- Linux kernel 2.3.x
　　- IBM AIX 4.3.2
　　- HP HP-UX 11.4
　　
　　
　　
　　Many webservers are case-sensitive, but do not have all possible combinations of cases in mapped extensions mapped properly.
　　
　　By changing the letters in a JSP or a JHTML file extension from lower case to upper case (eg: .jsp or .jhtml becomes .JSP or .JHTML) in a URL the server does not recognize the file extension and sends the file normally. In that manner, a user is able to access the source code to those specific files.