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CVE-2020-28053

Status: ModifiedMedium (6.5)—

HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Hashicorp — Consul

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-28053",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-11-23T14:15:12.377",
  "references": [
    {
      "url": "https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#186-november-19-2020",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/202208-09",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.hashicorp.com/blog/category/consul",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/hashicorp/consul/blob/master/CHANGELOG.md#186-november-19-2020",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202208-09",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.hashicorp.com/blog/category/consul",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6."
    },
    {
      "lang": "es",
      "value": "HashiCorp Consul y Consul Enterprise versiones 1.2.0 hasta 1.8.5, permitieron a operadores con operador: leer unos permisos ACL para leer la configuración de la clave privada de Connect CA. Corregido en versiones 1.6.10, 1.7.10 y 1.8.6"
    }
  ],
  "lastModified": "2026-06-17T03:10:04.663",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BE7453B5-137B-417F-A899-ED32E3DB2EE3",
              "versionEndExcluding": "1.6.10",
              "versionStartIncluding": "1.2.0"
            },
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E1875B29-C61E-4D9C-808D-ADBFF6A33454",
              "versionEndExcluding": "1.6.10",
              "versionStartIncluding": "1.2.0"
            },
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B01C7128-EAE5-402B-9BFA-33065E96433E",
              "versionEndExcluding": "1.7.10",
              "versionStartIncluding": "1.7.0"
            },
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BB45A597-7C0A-459E-96CC-EA7CD0B1C2C5",
              "versionEndExcluding": "1.7.10",
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            },
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5940D8A9-9791-4EE8-9F4B-D93564753D78",
              "versionEndExcluding": "1.8.6",
              "versionStartIncluding": "1.8.0"
            },
            {
              "criteria": "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0EEAB2A3-86CE-461A-8E50-DEFC883DF179",
              "versionEndExcluding": "1.8.6",
              "versionStartIncluding": "1.8.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}