fkie_cve-2021-1871
Vulnerability from fkie_nvd
Published
2021-04-02 19:15
Modified
2025-10-23 18:01
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
References
product-security@apple.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/Mailing List, Broken Link
product-security@apple.comhttps://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
product-security@apple.comhttps://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
product-security@apple.comhttps://www.debian.org/security/2021/dsa-4923Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/Mailing List, Broken Link
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4923Mailing List, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871US Government Resource
Impacted products
Vendor Product Version
apple ipados *
apple iphone_os *
apple mac_os_x *
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple mac_os_x 10.15.7
apple macos *
debian debian_linux 10.0
fedoraproject fedora 33


To clipboard 

{
  "cisaActionDue": "2021-11-17",
  "cisaExploitAdd": "2021-11-03",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability",
  "configurations": [
    {
      "nodes": [
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              "versionEndExcluding": "14.4",
              "vulnerable": true
            },
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              "versionEndExcluding": "10.15.7",
              "versionStartIncluding": "10.15",
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            },
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              "vulnerable": true
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              "matchCriteriaId": "C1C795B9-E58D-467C-83A8-2D45C792292F",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "084F8722-A895-4FC2-821E-DF0B129653BC",
              "versionEndExcluding": "11.2",
              "versionStartIncluding": "11.0.1",
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            }
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        }
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              "vulnerable": true
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.."
    },
    {
      "lang": "es",
      "value": "Se abord\u00f3 un problema de l\u00f3gica con unas restricciones mejoradas.\u0026#xa0;Este problema es corregido en macOS Big Sur versi\u00f3n 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS versi\u00f3n 14.4 y iPadOS versi\u00f3n 14.4.\u0026#xa0;Un atacante remoto puede conllevar a una ejecuci\u00f3n de c\u00f3digo arbitraria.\u0026#xa0;Apple tiene conocimiento de un reporte que indica que este problema puede haber sido explotado activamente."
    }
  ],
  "id": "CVE-2021-1871",
  "lastModified": "2025-10-23T18:01:41.567",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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      },
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          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
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        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2021-04-02T19:15:20.663",
  "references": [
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      "tags": [
        "Mailing List",
        "Broken Link"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/"
    },
    {
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    },
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    {
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      "tags": [
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      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871"
    }
  ],
  "sourceIdentifier": "product-security@apple.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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