Description

This attack is a variant of Path Traversal and can be exploited when the application accepts the use of relative traversal sequences such as "../".

More detailed information can be found on Path_Traversal

Severity

High

Likelihood of exploitation

High

Examples

The following URLs are vulnerable to this attack:

 http://some_site.com.br/get-files.jsp?file=report.pdf  
 http://some_site.com.br/get-page.php?home=aaa.html  
 http://some_site.com.br/some-page.asp?page=index.html  

A simple way to execute this attack is like this:

 http://some_site.com.br/get-files?file=../../../../some dir/some file  
 http://some_site.com.br/../../../../etc/shadow  
 http://some_site.com.br/get-files?file=../../../../etc/passwd