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                              To: BugTraq
                              Subject: myServer 0.4.3 Directory Traversal 
                              Vulnerability
                              Date: Sep 25 2003 9:01PM
                              Author: scrap <webmaster securiteinfo com>
                              Message-ID: 
                              <200309252301.22711.webmaster@securiteinfo.com>


myServer 0.4.3 Directory Traversal Vulnerability

.oO Overview Oo.
myServer version 0.4.3 shows files and directories that reside outside the 
normal web root directory.
Discovered on 2003, August, 23th
Vendor: Myserver (http://myserverweb.sourceforge.net/forum/portal.php)

MyServer is a free, powerful web server program designed to be easily run on a 
personal computer by the average computer user. It is a multithread 
application and supports HTTP, CGI, ISAPI, WinCGI and FastCGI protocols. It 
is available on Windows and Linux Operating Systems. This web server can 
shows file and directory content that reside outside the normal web root 
directory.

Original text is at
http://www.securiteinfo.com/attaques/hacking/myServer0_4_3.shtml

.oO Details Oo.
The vulnerability can be done using any browser. You just have to send a 
specially crafted dot-dot URL to retreive any file outside of the root 
directory. 

.oO Exploit Oo.
You have to create a dot-dot URL with the same number of "/./" and "/../" + 1.
For example, you can use :
/././..
/./././../..
/././././../../..
/./././././../../../..
etc...

.oO Solution Oo.
The vendor has been informed and has solved the problem.
Download MyServer 0.5 at 
http://sourceforge.net/project/showfiles.php?group_id=63119 

.oO Discovered by Oo.
Arnaud Jacques aka scrap
webmaster securiteinfo com
http://www.securiteinfo.com 







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