Bug Bounty course
What you will learn
☑ path tarversal attack
☑ bug bounty
☑ website security
☑ bypass website security filter
Description
Overview
A path traversal attack (also known as directory traversal) aims to access files and directories that are stored outside the web root folder. By manipulating variables that reference files with “dot-dot-slash (../)” sequences and its variations or by using absolute file paths, it may be possible to access arbitrary files and directories stored on file system including application source code or configuration and critical system files. It should be noted that access to files is limited by system operational access control (such as in the case of locked or in-use files on the Microsoft Windows operating system).
This attack is also known as “dot-dot-slash”, “directory traversal”, “directory climbing” and “backtracking”
How to identify if you are vulnerable
- Be sure you understand how the underlying operating system will process filenames handed off to it.
- Don’t store sensitive configuration files inside the web root
- For Windows IIS servers, the web root should not be on the system disk, to prevent recursive traversal back to system directories.
A path traversal vulnerability allows an attacker to access files on your web server to which they should not have access. They do this by tricking either the web server or the web application running on it into returning files that exist outside of the web root folder.
English
Language
Content
Introduction
Introduction
File path traversal, simple case
File path traversal, simple case
File path traversal, traversal sequences blocked with absolute path bypass
Find File path traversal using source code
File path traversal, traversal sequences stripped non-recursively
File path traversal, traversal sequences stripped non-recursively
File path traversal, traversal sequences stripped with superfluous URL-decode
File path traversal, traversal sequences stripped with superfluous URL-decode
File path traversal, validation of start of path
File path traversal, validation of start of path
File path traversal, validation of file extension with null byte bypass
File path traversal, validation of file extension with null byte bypass