FKIE_CVE-2021-23567

Vulnerability from fkie_nvd - Published: 2022-01-14 20:15 - Updated: 2026-06-17 03:38
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The package colors after 1.4.0 are vulnerable to Denial of Service (DoS) that was introduced through an infinite loop in the americanFlag module. Unfortunately this appears to have been a purposeful attempt by a maintainer of colors to make the package unusable, other maintainers' controls over this package appear to have been revoked in an attempt to prevent them from fixing the issue. Vulnerable Code js for (let i = 666; i < Infinity; i++;) { Alternative Remediation Suggested * Pin dependancy to 1.4.0
References
report@snyk.iohttps://github.com/Marak/colors.js/commit/074a0f8ed0c31c35d13d28632bd8a049ff136fb6%23diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R18Patch, Third Party Advisory
report@snyk.iohttps://github.com/Marak/colors.js/issues/285Exploit, Issue Tracking, Third Party Advisory
report@snyk.iohttps://github.com/Marak/colors.js/issues/285%23issuecomment-1008212640Exploit, Issue Tracking, Third Party Advisory
report@snyk.iohttps://snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-what/Exploit, Mitigation, Third Party Advisory
report@snyk.iohttps://snyk.io/vuln/SNYK-JS-COLORS-2331906Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/Marak/colors.js/commit/074a0f8ed0c31c35d13d28632bd8a049ff136fb6%23diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R18Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/Marak/colors.js/issues/285Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/Marak/colors.js/issues/285%23issuecomment-1008212640Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-what/Exploit, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JS-COLORS-2331906Exploit, Third Party Advisory
Impacted products
Vendor Product Version
colors.js_project colors.js 1.4.1
colors.js_project colors.js 1.4.44-liberty-2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "colors",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "next of 1.4.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "report@snyk.io"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:colors.js_project:colors.js:1.4.1:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "11F8102B-5C66-45FB-A8CD-22A5E83B669B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:colors.js_project:colors.js:1.4.44-liberty-2:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "F9672EA1-A4DC-48F5-B958-438D807C49B5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The package colors after 1.4.0 are vulnerable to Denial of Service (DoS) that was introduced through an infinite loop in the americanFlag module. Unfortunately this appears to have been a purposeful attempt by a maintainer of colors to make the package unusable, other maintainers\u0027 controls over this package appear to have been revoked in an attempt to prevent them from fixing the issue. Vulnerable Code js for (let i = 666; i \u003c Infinity; i++;) { Alternative Remediation Suggested * Pin dependancy to 1.4.0"
    },
    {
      "lang": "es",
      "value": "package colors versiones posteriores a 1.4.0, son vulnerables a una denegaci\u00f3n de servicio (DoS) que es introducida  mediante un bucle infinito en el m\u00f3dulo americanFlag. Desafortunadamente, esto parece haber sido un intento intencionado por parte de un mantenedor de colors para hacer el paquete inusable, los controles de otros mantenedores sobre este paquete parecen haber sido revocados en un intento de evitar que arreglen el problema. C\u00f3digo vulnerable js for (let i = 666; i \u0026lt; Infinity; i++;) { Remediaci\u00f3n alternativa sugerida * Fijar la dependencia a versi\u00f3n 1.4.0"
    }
  ],
  "id": "CVE-2021-23567",
  "lastModified": "2026-06-17T03:38:49.937",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "report@snyk.io",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-01-14T20:15:10.157",
  "references": [
    {
      "source": "report@snyk.io",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/commit/074a0f8ed0c31c35d13d28632bd8a049ff136fb6%23diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R18"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/issues/285"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/issues/285%23issuecomment-1008212640"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-what/"
    },
    {
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://snyk.io/vuln/SNYK-JS-COLORS-2331906"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/commit/074a0f8ed0c31c35d13d28632bd8a049ff136fb6%23diff-92bbac9a308cd5fcf9db165841f2d90ce981baddcb2b1e26cfff170929af3bd1R18"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/issues/285"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Marak/colors.js/issues/285%23issuecomment-1008212640"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://snyk.io/blog/open-source-maintainer-pulls-the-plug-on-npm-packages-colors-and-faker-now-what/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://snyk.io/vuln/SNYK-JS-COLORS-2331906"
    }
  ],
  "sourceIdentifier": "report@snyk.io",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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.