Before we get into the manipulation of the URL, let’s define its parts.
The first part of the URL is called the protocol, which tells the computing network which language is being used to communicate on said network. Most of the time, the URL will use the protocol “HTTP”. The HyperText Transfer Protocol makes it possible to exchange web pages. Other protocols that are used include File Transfer Protocol, News, and Mailto.
The second part of the URL is the ID and password, which makes it possible to access secure servers on the network. This part is typically removed because the password will be visible and transfer unencrypted over the computer network.
The third part of the URL is the server name. It allows users to access information stored on specific servers whether through a domain or the IP address associated with the server.
The fourth part of the URL is the port number. This number is associated with a service and tells the server what type of resources are being requested. The default port is port 80, which can be left off the URL as long as the information that is being requested is associated with port 80.
Finally, the fifth, and last, part of the URL is the path. The path gives direct access to the resources found tied to the IP (or domain).
Manipulating the URL
By manipulating parts of the URL, a hacker can gain access to web pages found on servers that they wouldn’t normally have access to. Most users will visit a website and then use the links provided by the website. This will get them to where they need to go without much problem, but it creates their own perimeters.
When a hacker wants to test the site for vulnerabilities, he’ll start by manually modifying the parameters to try different values. If the web designer hasn’t anticipated this behavior, a hacker could potentially obtain access to a typically-protected part of the website. This trial and error method, where a hacker tests directories and file extensions randomly to find important information can be automated, allowing hackers to get through whole websites in seconds.
With this method they can try searching for directories that make it possible to control the site, scripts that reveal information about the site, or for hidden files.
Directory traversal attacks, also known as path traversal attacks, are also popular. This is where the hacker will modify the tree structure path in a URL to force a server to access unauthorized parts of the website. On vulnerable servers, hackers will be able to move through directories simply.
What You Can Do?
Securing your server against URL attacks is important. You need to ensure that all of your software is updated with the latest threat definitions, and keeping a detailed configuration will keep users in their lanes, even those who know all the tricks.
The IT experts at Aspire can help you keep your business’ IT infrastructure from working against you. Call us today at (469) 7-ASPIRE for more information about how to maintain your organization’s network security.