StockApi= Here, the server will fetch the contents of the /admin URL and return it to the user. In this situation, an attacker can modify the request to specify a URL local to the server itself. This causes the server to make a request to the specified URL, retrieve the stock status, and return this to the user. So when a user views the stock status for an item, their browser makes a request like this:Ĭontent-Type: application/x-www-form-urlencoded The function is implemented by passing the URL to the relevant back-end API endpoint via a front-end HTTP request. To provide the stock information, the application must query various back-end REST APIs, dependent on the product and store in question. This will typically involve supplying a URL with a hostname like 127.0.0.1 (a reserved IP address that points to the loopback adapter) or localhost (a commonly used name for the same adapter).įor example, consider a shopping application that lets the user view whether an item is in stock in a particular store. In an SSRF attack against the server itself, the attacker induces the application to make an HTTP request back to the server that is hosting the application, via its loopback network interface. These trust relationships might exist in relation to the server itself, or in relation to other back-end systems within the same organization. SSRF attacks often exploit trust relationships to escalate an attack from the vulnerable application and perform unauthorized actions. In some situations, the SSRF vulnerability might allow an attacker to perform arbitrary command execution.Īn SSRF exploit that causes connections to external third-party systems might result in malicious onward attacks that appear to originate from the organization hosting the vulnerable application. View all SSRF labs What is the impact of SSRF attacks?Ī successful SSRF attack can often result in unauthorized actions or access to data within the organization, either in the vulnerable application itself or on other back-end systems that the application can communicate with. Some of you may already know about Filter Forge because it’s one of the most popular plug-ins in the industry today.If you're already familiar with the basic concepts behind SSRF vulnerabilities and just want to practice exploiting them on some realistic, deliberately vulnerable targets, you can access all of the labs in this topic from the link below. For those who don’t, it’s a pretty robust plug-in for Photoshop that’s aimed at everyone from novice to expert, so there’s something for everyone here. Filter Forge provides graphic artists, 3D modelers, Web designers, and photographers with the ability to create a wide variety of photo effects, as well as abstract and realistic textures that you can use for pretty much whatever your creativity can come up with. The long-awaited Filter Forge 3 has finally launched and it’s packed full of features that really take the possibilities up a notch, so let’s take a look at what they are. We’ll start with a peek at just how much is here out of the box (so to speak)! You won’t feel shorted on extras because Filter Forge 3 offers more than 3,800 graphic effects and 4,300+ backgrounds and textures-a total of 8,593 filters! You can also use the visual filter editor to create your own filters by assembling them from various components-blurs, gradients, color adjustments, noises, distortions, or blends. Next up is probably one of the most requested features (and also the biggest drawback in prior Filter Forge versions): Support for multiple source images, which has now become a reality.
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