GHSA-QPHC-HF5Q-V8FC

Vulnerability from github – Published: 2021-12-14 21:19 – Updated: 2024-02-08 12:30
VLAI?
Summary
actionpack Open Redirect in Host Authorization Middleware
Details

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.

Impacted applications will have allowed hosts with a leading dot. For example, configuration files that look like this:

config.hosts <<  '.EXAMPLE.com'

When an allowed host contains a leading dot, a specially crafted Host header can be used to redirect to a malicious website.

This vulnerability is similar to CVE-2021-22881 and CVE-2021-22942.

Releases

The fixed releases are available at the normal locations.

Patches

To aid users who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.

  • 6-0-host-authorzation-open-redirect.patch - Patch for 6.0 series
  • 6-1-host-authorzation-open-redirect.patch - Patch for 6.1 series
  • 7-0-host-authorzation-open-redirect.patch - Patch for 7.0 series

Please note that only the 6.1.Z, 6.0.Z, and 5.2.Z series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.

Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Show details on source website
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.0.4.1"
      },
      "package": {
        "ecosystem": "RubyGems",
        "name": "actionpack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.0.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.1.4.1"
      },
      "package": {
        "ecosystem": "RubyGems",
        "name": "actionpack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.1.0"
            },
            {
              "fixed": "6.1.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-44528"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-12-14T21:12:06Z",
    "nvd_published_at": "2022-01-10T14:10:00Z",
    "severity": "MODERATE"
  },
  "details": "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.\n\nImpacted applications will have allowed hosts with a leading dot. For example, configuration files that look like this:\n\n```\nconfig.hosts \u003c\u003c  \u0027.EXAMPLE.com\u0027\n```\n\nWhen an allowed host contains a leading dot, a specially crafted Host header can be used to redirect to a malicious website.\n\nThis vulnerability is similar to CVE-2021-22881 and CVE-2021-22942.\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.\n\n* 6-0-host-authorzation-open-redirect.patch - Patch for 6.0 series\n* 6-1-host-authorzation-open-redirect.patch - Patch for 6.1 series\n* 7-0-host-authorzation-open-redirect.patch - Patch for 7.0 series\n\nPlease note that only the 6.1.Z, 6.0.Z, and 5.2.Z series are supported at present. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.",
  "id": "GHSA-qphc-hf5q-v8fc",
  "modified": "2024-02-08T12:30:47Z",
  "published": "2021-12-14T21:19:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44528"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/commit/0fccfb9a3097a9c4260c791f1a40b128517e7815"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/commit/aecba3c301b80e9d5a63c30ea1b287bceaf2c107"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rails/rails"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/blob/v6.1.4.2/actionpack/CHANGELOG.md#rails-6142-december-14-2021"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2021-44528.yml"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/ruby-security-ann/c/vG9gz3nk1pM/m/7-NU4MNrDAAJ"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/ruby-security-ann/c/vG9gz3nk1pM/m/7-NU4MNrDAAJ?utm_medium=email\u0026utm_source=footer"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20240208-0003"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5372"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "actionpack Open Redirect in Host Authorization Middleware"
}


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  • 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.



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