CVE-2021-44528 Scanner

Rails, also known as Ruby on Rails, is a popular and widely used web application framework written in the Ruby programming language. It is used to build dynamic and interactive web applications with ease. In Rails, developers can quickly create models, views, and controllers that work together seamlessly. With its powerful backend features, Rails has been widely adopted by companies of all sizes, including Airbnb, GitHub, and Shopify.

The CVE-2021-44528 vulnerability, detected in Rails version 6.0.0 and above, is an open redirect vulnerability that can be exploited when a crafted "X-Forwarded-Host" header is combined with certain "allowed host" formats. The vulnerability exists in the Host Authorization middleware, which is used to redirect users to a specific website. With this vulnerability, an attacker can create a link that appears to be a trusted site, but in reality, the link will redirect the user to a malicious site controlled by the attacker.

When exploited, the CVE-2021-44528 vulnerability can lead to severe consequences, including stealing sensitive information from users, distributing malware, and conducting phishing attacks. An attacker can use the open redirect to lure users into clicking on a link that disguises a malicious site as a trusted source, revealing sensitive information such as login credentials and financial information.

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REFERENCES

• https://github.com/rails/rails/commit/0fccfb9a3097a9c4260c791f1a40b128517e7815