CVE-2021-22881

URL Redirection to Untrusted Site (Open Redirect) in gem/rails

Identifier

CVE-2021-22881

Package Slug

gem/rails

Vulnerability

URL Redirection to Untrusted Site (Open Redirect)

Description

The Host Authorization middleware in Action Pack suffers from an open redirect vulnerability. Specially crafted 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. Impacted applications will have allowed hosts with a leading dot. When an allowed host contains a leading dot, a specially crafted Host header can be used to redirect to a malicious website.

Affected Versions

All versions starting from 6.0.0 before 6.0.3.5, all versions starting from 6.1.0 before 6.1.2.1

Solution

Upgrade to versions 6.0.3.5, 6.1.2.1 or above.

Last Modified

2021-02-19

source