CVE-2024-26146: Rack Denial of Service Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-54rr-7fvw-6x8f",
  "modified" : "2024-02-29T02:30:57Z",
  "published" : "2024-02-28T22:57:03Z",
  "aliases" : [ "CVE-2024-26146" ],
  "summary" : "Rack Header Parsing leads to Possible Denial of Service Vulnerability",
  "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't 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!",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.9.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2.0"
      }, {
        "fixed" : "2.2.8.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1.0"
      }, {
        "fixed" : "2.1.4.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.9.4"
      } ]
    } ]
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-28T22:57:03Z",
    "nvd_published_at" : "2024-02-29T00:15:51Z"
  }
}