myServer version 0.4.3 shows files and directories that reside outside the normal web root directory.
Discovered on 2003, August, 23th
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.
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.
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 :
The vendor has been informed and has solved the problem.
Download MyServer 0.5
Arnaud Jacques aka scrap