Webhooks are a modular way to extend the functionality of an application by including flexible and standardized “plugins.” The external site plugins (webhooks) are called after a triggering event in the origin application. In this blog post I’ll review the technical details of SSRF, how it was utilized in the Capital One breach, why it’s so critical to understand for today’s cloud-hosted web apps, and how organizations can protect … Why do developers introduce risky practices that can lead to SSRF? As a general rule, all untrusted input should always be validated, and SSRF vulnerabilities can be avoided by using good coding practices. However, although Fortify is known for false positives, I have not seen it make that type of mistake (i.e. Typical risky SSRF Use Cases We use optional third-party analytics cookies to understand how you use GitHub.com so we can build better products. By tracking all input data in real-time and seeing how the application is actually using it, an IAST will reliably detect that an untrusted input is involved in sensitive operations, both internal and external.

The following is the result of an Acunetix scan with AcuMonitor to detect Server-Side Request Forgery (SSRF). There is no validation. This information can help the developers identify the source of the problem and fix it. All About Dynamic Application Security Testing tools. If uri is indeed hard-coded, then the attacker has no ability to influence where the request is going, so it would indeed look to be a false positive. Runtime Application Self Protection technology (RASP) shares some of the architectural advantages with the IAST approach discussed above, in the vulnerability detection section. Perimeter defenses such as WAFs rely on blacklists and pattern matching to guess what activities constitute attacks.

* http://localhost:8080/ssrf/request/sec?url=http://test.joychou.org, * http://localhost:8080/ssrf/openStream?url=file:///etc/passwd, * http://localhost:8080/ssrf/httpclient/sec?url=http://www.baidu.com, * http://localhost:8080/ssrf/commonsHttpClient/sec?url=http://www.baidu.com, * http://localhost:8080/ssrf/Jsoup?url=http://www.baidu.com, * http://localhost:8080/ssrf/IOUtils/sec?url=http://www.baidu.com. Server Side Request Forgery example This results in SASTs missing SSRF vulnerabilities, and also false positives due to the SAST pattern matching approach. they're used to gather information about the pages you visit and how many clicks you need to accomplish a task.

GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. We use essential cookies to perform essential website functions, e.g. Passive IASTs, in particular, do not need to use specific inputs or probing traffic, and can reliably identify SSRF vulnerabilities with no false positives. they're used to log you in. When information in a web application has to be retrieved from an external resource, which could also be internal services, such as a RSS feed from another website, server side requests are used to fetch the resource and include it in the web application.

What is SSRF During a scan, Acunetix will make requests containing a unique AcuMonitor URL. Active IASTs will have to rely on specific attack traffic to identify SSRF vulnerabilities.

See the original article here. In the above example, since the attacker has full control of the URL parameter, in addition to being able to make arbitrary GET requests to any website on the Internet, an attacker can also make requests to resources on the server.

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