Overview
myServer version 0.4.3 shows files and directories that reside outside the normal web root directory.
Discovered on 2003, August, 23th
Vendor: Myserver
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.
Risk
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| Vulnerability spreading |
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Details
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.
Exploit
Here is an example of the vulnerability. The query sent was /././../ :
In fact, you have to create a dot-dot URL with the same number of "/./" and "/../" + 1.
For example, you can use :
/././..
/./././../..
/././././../../..
/./././././../../../..
etc...
Solution
The vendor has been informed and has solved the problem.
Download MyServer 0.5.
Discovered by
Arnaud Jacques aka scrap
webmaster@securiteinfo.com
Tags
RECHERCHE DE VULNERABILITÉS
SERVEUR WEB
FUITE D'INFORMATIONS
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