FKIE_CVE-2020-25580

Vulnerability from fkie_nvd - Published: 2021-03-26 21:15 - Updated: 2026-06-17 03:06
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
In FreeBSD 12.2-STABLE before r369346, 11.4-STABLE before r369345, 12.2-RELEASE before p4 and 11.4-RELEASE before p8 a regression in the login.access(5) rule processor has the effect of causing rules to fail to match even when they should not. This means that rules denying access may be ignored.
References
secteam@freebsd.orghttps://security.FreeBSD.org/advisories/FreeBSD-SA-21:03.pam_login_access.ascVendor Advisory
secteam@freebsd.orghttps://security.netapp.com/advisory/ntap-20210423-0005/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.FreeBSD.org/advisories/FreeBSD-SA-21:03.pam_login_access.ascVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210423-0005/Third Party Advisory
Impacted products
Vendor Product Version
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 11.4
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "FreeBSD",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "FreeBSD 12.2-RELEASE before p4, 11.4-RELEASE before p8"
            }
          ]
        }
      ],
      "source": "secteam@freebsd.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*",
              "matchCriteriaId": "4A865EA1-01D7-4E5A-9D13-80780F8A9D7A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:*",
              "matchCriteriaId": "9FCA6A72-2A72-45FD-A43D-B5BF7C329121",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:*",
              "matchCriteriaId": "90F9B3CB-3B60-4AA8-9EAF-4F0BE7D27691",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:*",
              "matchCriteriaId": "C04EE177-C7D1-4049-B680-F961A27C677F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:*",
              "matchCriteriaId": "218AF216-7B03-4C02-B55F-2316AF14074B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:*",
              "matchCriteriaId": "33266717-0359-4243-868B-B84436E2A89E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p6:*:*:*:*:*:*",
              "matchCriteriaId": "99965487-D5FD-4507-A43B-F241FEEA5237",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:11.4:p7:*:*:*:*:*:*",
              "matchCriteriaId": "050F0B6A-4674-45E9-A079-60A68CFA4D25",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*",
              "matchCriteriaId": "73D9C08B-8F5B-40C4-A5BD-B00D2E4C012D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*",
              "matchCriteriaId": "62A178A3-6A52-4981-9A27-FB07AD8AF778",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*",
              "matchCriteriaId": "54A487B1-E5CE-4C76-87E8-518D24C5D86D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p3:*:*:*:*:*:*",
              "matchCriteriaId": "9F084CAB-D138-4BF6-ABC2-2314F0FDE0D1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In FreeBSD 12.2-STABLE before r369346, 11.4-STABLE before r369345, 12.2-RELEASE before p4 and 11.4-RELEASE before p8 a regression in the login.access(5) rule processor has the effect of causing rules to fail to match even when they should not. This means that rules denying access may be ignored."
    },
    {
      "lang": "es",
      "value": "En FreeBSD versiones 12.2-STABLE anteriores a r369346, 11.4-STABLE anteriores a r369345, 12.2-RELEASE anteriores a p4 y 11.4-RELEASE anteriores a p8, una regresi\u00f3n en el procesador de reglas login.access(5) tiene el efecto de causar que las reglas no coincidan incluso cuando no deber\u00eda.\u0026#xa0;Esto significa que las reglas que niegan el acceso pueden ignorarse."
    }
  ],
  "id": "CVE-2020-25580",
  "lastModified": "2026-06-17T03:06:55.613",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "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": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-03-26T21:15:12.787",
  "references": [
    {
      "source": "secteam@freebsd.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:03.pam_login_access.asc"
    },
    {
      "source": "secteam@freebsd.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210423-0005/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:03.pam_login_access.asc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210423-0005/"
    }
  ],
  "sourceIdentifier": "secteam@freebsd.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-697"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

Author Source Type Date Other

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.