GHSA-54RR-7FVW-6X8F

Vulnerability from github – Published: 2024-02-28 22:57 – Updated: 2024-02-29 02:30
VLAI?
Summary
Rack Header Parsing leads to Possible Denial of Service Vulnerability
Details

Possible Denial of Service Vulnerability in Rack Header Parsing

There is a possible denial of service vulnerability in the header parsing routines in Rack. This vulnerability has been assigned the CVE identifier CVE-2024-26146.

Versions Affected: All. Not affected: None Fixed Versions: 2.0.9.4, 2.1.4.4, 2.2.8.1, 3.0.9.1

Impact

Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted.

Ruby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2 or newer are unaffected.

Releases

The fixed releases are available at the normal locations.

Workarounds

There are no feasible workarounds for this issue.

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.

  • 2-0-header-redos.patch - Patch for 2.0 series
  • 2-1-header-redos.patch - Patch for 2.1 series
  • 2-2-header-redos.patch - Patch for 2.2 series
  • 3-0-header-redos.patch - Patch for 3.0 series

Credits

Thanks to svalkanov for reporting this and providing patches!

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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.0.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.1.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.9.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-26146"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-28T22:57:03Z",
    "nvd_published_at": "2024-02-29T00:15:51Z",
    "severity": "LOW"
  },
  "details": "# Possible Denial of Service Vulnerability in Rack Header Parsing\n\nThere is a possible denial of service vulnerability in the header parsing\nroutines in Rack.  This vulnerability has been assigned the CVE identifier\nCVE-2024-26146.\n\nVersions Affected:  All.\nNot affected:       None\nFixed Versions:     2.0.9.4, 2.1.4.4, 2.2.8.1, 3.0.9.1\n\nImpact\n------\nCarefully crafted headers can cause header parsing in Rack to take longer than\nexpected resulting in a possible denial of service issue. Accept and Forwarded\nheaders are impacted.\n\nRuby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2\nor newer are unaffected.\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nWorkarounds\n-----------\nThere are no feasible workarounds for this issue.\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches for\nthe two supported release series. They are in git-am format and consist of a\nsingle changeset.\n\n* 2-0-header-redos.patch - Patch for 2.0 series\n* 2-1-header-redos.patch - Patch for 2.1 series\n* 2-2-header-redos.patch - Patch for 2.2 series\n* 3-0-header-redos.patch - Patch for 3.0 series\n\nCredits\n-------\n\nThanks to [svalkanov](https://hackerone.com/svalkanov) for reporting this and\nproviding patches!",
  "id": "GHSA-54rr-7fvw-6x8f",
  "modified": "2024-02-29T02:30:57Z",
  "published": "2024-02-28T22:57:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26146"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccd"
    },
    {
      "type": "WEB",
      "url": "https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rack/rack"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "Rack Header Parsing leads to Possible Denial of Service Vulnerability"
}


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