FKIE_CVE-2021-4235

Vulnerability from fkie_nvd - Published: 2022-12-27 22:15 - Updated: 2025-04-11 17:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.
References
security@golang.orghttps://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241Patch, Third Party Advisory
security@golang.orghttps://github.com/go-yaml/yaml/pull/375Exploit, Patch, Third Party Advisory
security@golang.orghttps://lists.debian.org/debian-lts-announce/2023/07/msg00001.html
security@golang.orghttps://pkg.go.dev/vuln/GO-2021-0061Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/go-yaml/yaml/pull/375Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/07/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://pkg.go.dev/vuln/GO-2021-0061Third Party Advisory
Impacted products
Vendor Product Version
yaml_project yaml *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:yaml_project:yaml:*:*:*:*:*:go:*:*",
              "matchCriteriaId": "6ADB4662-19BA-4FB2-88FB-0D8309DE5DB0",
              "versionEndExcluding": "2.2.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector."
    },
    {
      "lang": "es",
      "value": "Debido a la b\u00fasqueda ilimitada de alias, un archivo YAML creado con fines malintencionados puede hacer que el sistema consuma importantes recursos. Si se analiza la entrada del usuario, esto se puede utilizar como un vector de denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2021-4235",
  "lastModified": "2025-04-11T17:15:35.497",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2022-12-27T22:15:11.960",
  "references": [
    {
      "source": "security@golang.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241"
    },
    {
      "source": "security@golang.org",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/go-yaml/yaml/pull/375"
    },
    {
      "source": "security@golang.org",
      "url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00001.html"
    },
    {
      "source": "security@golang.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://pkg.go.dev/vuln/GO-2021-0061"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/go-yaml/yaml/pull/375"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://pkg.go.dev/vuln/GO-2021-0061"
    }
  ],
  "sourceIdentifier": "security@golang.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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