Lab: File path traversal, traversal sequences blocked with absolute path bypass
This lab contains a file path traversal vulnerability in the display of product images.
The application blocks traversal sequences but treats the supplied filename as being relative to a default working directory.
To solve the lab, retrieve the contents of the /etc/passwd file.
Use Burp Suite to intercept and modify a request that fetches a product image.
Modify the filename parameter, giving it the value /etc/passwd.
Observe that the response contains the contents of the /etc/passwd file.