Absolute Path Traversal

From OWASP
Revision as of 23:21, 7 August 2008 by Mchalmers (Talk | contribs)

Jump to: navigation, search


This page has been recommended for deletion.
You can help OWASP by improving it or discussing it on its Talk page. See FixME
Comment: Tagged via Template:Delete


This is an Attack. To view all attacks, please see the Attack Category page.


Last revision (mm/dd/yy): 08/7/2008

Description

If a product expects a filename as input it is possible that it can construct an absolute path such as "/rootdir/subdir," which is then processed by the operating system to access a file or resource that is outside of a restricted path that was intended by the developer.

This is similar to path traversal but uses only "/" and not ".." to gain access. More detailed information can be found on Path_Traversal

Risk Factors

Examples

How does the attack work?

The following URLs maybe are vulnerable to this attack:
http://testsite.com/get.php?f=list
http://testsite.com/get.cgi?f=2
http://testsite.com/get.asp?f=test
A simple way to execute this attack is like this:
http://testsite.com/get.php?f=/var/www/html/get.php
http://testsite.com/get.cgi?f=/var/www/html/admin/get.inc
http://testsite.com/get.asp?f=/etc/passwd
When the web server returns information about errors in a web application, it is much easier for the attacker to guess the correct locations (e.g. path to the file with a source code, which then may be displayed).

Related Threat Agents

Related Attacks

Related Vulnerabilities


Related Controls

References