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Open Redirect Affecting rails package, versions >=6.1.0, <6.1.4.1 >=6.0.0, <6.0.4.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Availability High

    Threat Intelligence

    EPSS 0.11% (44th percentile)
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NVD
6.1 medium
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Red Hat
5.4 medium

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  • Snyk ID SNYK-RUBY-RAILS-1567785
  • published 20 Aug 2021
  • disclosed 20 Aug 2021
  • credit Unknown
Report a new vulnerability Found a mistake?

Introduced: 20 Aug 2021

CVE-2021-22942 Open this link in a new tab
CWE-601 Open this link in a new tab

How to fix?

Upgrade rails to version 6.1.4.1, 6.0.4.1 or higher.

Overview

rails is an opensource MVC web framework.

Affected versions of this package are vulnerable to Open Redirect. Specially crafted “X-Forwarded-Host” headers in combination with certain “allowed host” formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website.

NOTE: This is similar to CVE-2021-22881, and only affects applications that allow hosts with leading dots. Example of a config file that allows this:

config.hosts <<  '.EXAMPLE.com'