UBUNTU-CVE-2021-22881

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Source
https://ubuntu.com/security/CVE-2021-22881
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22881.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-22881
Upstream
Published
2021-02-11T18:15:00Z
Modified
2025-09-08T16:46:58Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The Host Authorization middleware in Action Pack before 6.1.2.1, 6.0.3.5 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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:4.2.6-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:4.*

2:4.1.10-1
2:4.2.5-1
2:4.2.5.1-1
2:4.2.5.2-2
2:4.2.6-1
2:4.2.6-1ubuntu0.1~esm1
2:4.2.6-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:4.2.6-1ubuntu0.1~esm2"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:4.2.10-0ubuntu4+esm2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:4.*

2:4.2.9-2
2:4.2.9-4
2:4.2.10-0ubuntu4
2:4.2.10-0ubuntu4+esm1
2:4.2.10-0ubuntu4+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:4.2.10-0ubuntu4+esm2"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:5.2.3+dfsg-3ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:5.*

2:5.2.2.1+dfsg-1ubuntu1
2:5.2.3+dfsg-3
2:5.2.3+dfsg-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:5.2.3+dfsg-3ubuntu0.1~esm1"
        }
    ]
}

Ubuntu:22.04:LTS / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:6.1.4.1+dfsg-8ubuntu2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:6.*

2:6.0.3.7+dfsg-2
2:6.1.4.1+dfsg-8ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2"
        }
    ]
}

Ubuntu:24.04:LTS / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:6.1.7.3+dfsg-3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:6.*

2:6.1.7.3+dfsg-2build1
2:6.1.7.3+dfsg-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.7.3+dfsg-3"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.7.3+dfsg-3"
        }
    ]
}

Ubuntu:25.04 / rails

Package

Name
rails
Purl
pkg:deb/ubuntu/rails@2:6.1.7.3+dfsg-7?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:6.*

2:6.1.7.3+dfsg-3
2:6.1.7.3+dfsg-4
2:6.1.7.3+dfsg-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rails",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.7.3+dfsg-7"
        },
        {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.7.3+dfsg-7"
        }
    ]
}