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GHSA-3XQ5-WJFH-PPJC

Vulnerability from github – Published: 2023-01-09 14:10 – Updated: 2024-02-12 06:30
VLAI
Summary
Luxon Inefficient Regular Expression Complexity vulnerability
Details

Impact

Luxon's `DateTime.fromRFC2822() has quadratic (N^2) complexity on some specific inputs. This causes a noticeable slowdown for inputs with lengths above 10k characters. Users providing untrusted data to this method are therefore vulnerable to (Re)DoS attacks.

This is the same bug as Moment's https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g

Workarounds

Limit the length of the input.

References

There is an excellent writeup of the same issue in Moment: https://github.com/moment/moment/pull/6015#issuecomment-1152961973

Details

DateTime.fromRFC2822("(".repeat(500000)) takes a couple minutes to complete.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "luxon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "1.28.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "luxon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "luxon"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-22467"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-01-09T14:10:49Z",
    "nvd_published_at": "2023-01-04T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "# Impact\nLuxon\u0027s `DateTime.fromRFC2822() has quadratic (N^2) complexity on some specific inputs. This causes a noticeable slowdown for inputs with lengths above 10k characters. Users providing untrusted data to this method are therefore vulnerable to (Re)DoS attacks.\n\nThis is the same bug as Moment\u0027s https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g\n\n# Workarounds\nLimit the length of the input.\n\n# References\nThere is an excellent writeup of the same issue in Moment: https://github.com/moment/moment/pull/6015#issuecomment-1152961973\n\n# Details\n`DateTime.fromRFC2822(\"(\".repeat(500000))` takes a couple minutes to complete.",
  "id": "GHSA-3xq5-wjfh-ppjc",
  "modified": "2024-02-12T06:30:33Z",
  "published": "2023-01-09T14:10:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/moment/luxon/security/advisories/GHSA-3xq5-wjfh-ppjc"
    },
    {
      "type": "WEB",
      "url": "https://github.com/moment/moment/security/advisories/GHSA-wc69-rhjr-hc9g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22467"
    },
    {
      "type": "WEB",
      "url": "https://github.com/moment/moment/pull/6015#issuecomment-1152961973"
    },
    {
      "type": "WEB",
      "url": "https://github.com/moment/luxon/commit/5ab3bf64a10da929a437629cdb2f059bb83212bf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/moment/luxon"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/44I3WAJKYXDLOVYRGMHAUXMIV4SPFXDZ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4LIVOASKBQH7FEUI5RWM3SOHR6VK7ZZR"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Luxon Inefficient Regular Expression Complexity vulnerability"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


Detection rules are retrieved from Rulezet.


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.