Vulnerability-Lookup

UBUNTU-CVE-2021-22881 (CVE-2021-22881)

Vulnerability from osv_ubuntu – Published: 2021-02-11 18:15 – Updated: 2026-05-20 14:53 – Source website

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.

Severity

6.1 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-22881	REPORT
	https://discuss.rubyonrails.org/t/cve-2021-22881-…	REPORT
	https://hackerone.com/reports/1047447	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-22881	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:4.2.6-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "2:4.2.10-0ubuntu4+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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:4.2.10-0ubuntu4+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "2:5.2.3+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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:5.2.3+dfsg-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-activejob",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-rails",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          },
          {
            "binary_name": "ruby-railties",
            "binary_version": "2:6.1.4.1+dfsg-8ubuntu2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:6.1.4.1+dfsg-8ubuntu2+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:6.0.3.7+dfsg-2",
        "2:6.1.4.1+dfsg-8ubuntu2",
        "2:6.1.4.1+dfsg-8ubuntu2+esm1"
      ]
    },
    {
      "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"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:6.1.7.3+dfsg-3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:6.1.7.3+dfsg-2build1",
        "2:6.1.7.3+dfsg-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rails",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activejob",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-rails",
            "binary_version": "2:7.2.2.1+dfsg-7"
          },
          {
            "binary_name": "ruby-railties",
            "binary_version": "2:7.2.2.1+dfsg-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:7.2.2.1+dfsg-7?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:6.1.7.3+dfsg-7",
        "2:7.2.2.1+dfsg-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "rails",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actioncable",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actionmailbox",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actionmailer",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actionpack",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actiontext",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-actionview",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activejob",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activemodel",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activerecord",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activestorage",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-activesupport",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-rails",
            "binary_version": "2:7.2.3+dfsg-2"
          },
          {
            "binary_name": "ruby-railties",
            "binary_version": "2:7.2.3+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "rails",
        "purl": "pkg:deb/ubuntu/rails@2:7.2.3+dfsg-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:7.2.2.1+dfsg-7",
        "2:7.2.2.2+dfsg-2",
        "2:7.2.3+dfsg-2"
      ]
    }
  ],
  "aliases": [],
  "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.",
  "id": "UBUNTU-CVE-2021-22881",
  "modified": "2026-05-20T14:53:08Z",
  "published": "2021-02-11T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-22881"
    },
    {
      "type": "REPORT",
      "url": "https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130"
    },
    {
      "type": "REPORT",
      "url": "https://hackerone.com/reports/1047447"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-22881"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-22881"
  ]
}

CVE-2021-22881 (GCVE-0-2021-22881)

Vulnerability from cvelistv5 – Published: 2021-02-11 16:12 – Updated: 2024-08-03 18:58

Summary

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.

Severity

No CVSS data available.

CWE

CWE-601 - Open Redirect (CWE-601)

Assigner

hackerone mitre root

References

7 references

URL	Tags
https://hackerone.com/reports/1047447	x_refsource_MISC
https://discuss.rubyonrails.org/t/cve-2021-22881-…	x_refsource_MISC
https://benjamin-bouchet.com/cve-2021-22881-faill…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://www.openwall.com/lists/oss-security/2021/05/05/2	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/08/20/1	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/12/14/5	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	https://github.com/rails/rails	Affected: Fixed in 6.1.2.1, 6.0.3.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:58:24.786Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1047447"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/"
          },
          {
            "name": "FEDORA-2021-b571fca1b8",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/"
          },
          {
            "name": "[oss-security] 20210505 [CVE-2021-22903] Possible Open Redirect Vulnerability in Action Pack",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/05/05/2"
          },
          {
            "name": "[oss-security] 20210819 [CVE-2021-22942] Possible Open Redirect in Host Authorization Middleware",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/08/20/1"
          },
          {
            "name": "[oss-security] 20211214 [CVE-2021-44528] Possible Open Redirect in Host Authorization Middleware",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/12/14/5"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "https://github.com/rails/rails",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Fixed in 6.1.2.1, 6.0.3.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "Open Redirect (CWE-601)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-14T21:06:20.000Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1047447"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/"
        },
        {
          "name": "FEDORA-2021-b571fca1b8",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/"
        },
        {
          "name": "[oss-security] 20210505 [CVE-2021-22903] Possible Open Redirect Vulnerability in Action Pack",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/05/05/2"
        },
        {
          "name": "[oss-security] 20210819 [CVE-2021-22942] Possible Open Redirect in Host Authorization Middleware",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/08/20/1"
        },
        {
          "name": "[oss-security] 20211214 [CVE-2021-44528] Possible Open Redirect in Host Authorization Middleware",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/12/14/5"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "support@hackerone.com",
          "ID": "CVE-2021-22881",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "https://github.com/rails/rails",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Fixed in 6.1.2.1, 6.0.3.5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Open Redirect (CWE-601)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://hackerone.com/reports/1047447",
              "refsource": "MISC",
              "url": "https://hackerone.com/reports/1047447"
            },
            {
              "name": "https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130",
              "refsource": "MISC",
              "url": "https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130"
            },
            {
              "name": "https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/",
              "refsource": "MISC",
              "url": "https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/"
            },
            {
              "name": "FEDORA-2021-b571fca1b8",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/"
            },
            {
              "name": "[oss-security] 20210505 [CVE-2021-22903] Possible Open Redirect Vulnerability in Action Pack",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/05/05/2"
            },
            {
              "name": "[oss-security] 20210819 [CVE-2021-22942] Possible Open Redirect in Host Authorization Middleware",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/08/20/1"
            },
            {
              "name": "[oss-security] 20211214 [CVE-2021-44528] Possible Open Redirect in Host Authorization Middleware",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/12/14/5"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2021-22881",
    "datePublished": "2021-02-11T16:12:34.000Z",
    "dateReserved": "2021-01-06T00:00:00.000Z",
    "dateUpdated": "2024-08-03T18:58:24.786Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2021-22881 (CVE-2021-22881)

CVE-2021-22881 (GCVE-0-2021-22881)

Tags

Sightings

Nomenclature

Related by attack behaviour