Vulnerability-Lookup

FKIE_CVE-2021-30877

Vulnerability from fkie_nvd - Published: 2021-08-24 19:15 - Updated: 2026-06-17 03:51

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Summary

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory.

References

	URL	Tags
	product-security@apple.com	https://support.apple.com/en-us/HT212869
	product-security@apple.com	https://support.apple.com/en-us/HT212871
	product-security@apple.com	https://support.apple.com/en-us/HT212872
	af854a3a-2127-422b-91ae-364da2661108	https://support.apple.com/en-us/HT212869
	af854a3a-2127-422b-91ae-364da2661108	https://support.apple.com/en-us/HT212871
	af854a3a-2127-422b-91ae-364da2661108	https://support.apple.com/en-us/HT212872

Impacted products

Vendor	Product	Version
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	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	mac_os_x	10.15.7
apple	macos	*
apple	macos	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "12.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "2021",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "11.6",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "product-security@apple.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "141A3268-DBD7-4F40-8BE4-CF8D9A0DF3E1",
              "versionEndIncluding": "10.15.6",
              "versionStartIncluding": "10.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*",
              "matchCriteriaId": "A654B8A2-FC30-4171-B0BB-366CD7ED4B6A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*",
              "matchCriteriaId": "F12CC8B5-C1EB-419E-8496-B9A3864656AD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*",
              "matchCriteriaId": "F1F4BF7F-90D4-4668-B4E6-B06F4070F448",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*",
              "matchCriteriaId": "7FD7176C-F4D1-43A7-9E49-BA92CA0D9980",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*",
              "matchCriteriaId": "2703DE0B-8A9E-4A9D-9AE8-028E22BF47CA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*",
              "matchCriteriaId": "0F441A43-1669-478D-9EC8-E96882DE4F9F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*",
              "matchCriteriaId": "D425C653-37A2-448C-BF2F-B684ADB08A26",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*",
              "matchCriteriaId": "A54D63B7-B92B-47C3-B1C5-9892E5873A98",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*",
              "matchCriteriaId": "3456176F-9185-4EE2-A8CE-3D989D674AB7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:*",
              "matchCriteriaId": "D337EE21-2F00-484D-9285-F2B0248D7A19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*",
              "matchCriteriaId": "012052B5-9AA7-4FD3-9C80-5F615330039D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*",
              "matchCriteriaId": "C1C795B9-E58D-467C-83A8-2D45C792292F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3ADD7C81-7CB2-4505-ACA0-9EC193E347D1",
              "versionEndExcluding": "11.6.1",
              "versionStartIncluding": "11.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4399FFF6-97BA-473E-8211-9837EA86784E",
              "versionEndExcluding": "12.0.1",
              "versionStartIncluding": "12.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory."
    },
    {
      "lang": "es",
      "value": "Se abord\u00f3 una lectura fuera de l\u00edmites con una comprobaci\u00f3n de l\u00edmites mejorada. Este problema se corrigi\u00f3 en macOS Monterey versi\u00f3n 12.0.1, actualizaci\u00f3n de seguridad 2021-007 Catalina, macOS Big Sur versi\u00f3n 11.6.1. El procesamiento de un binario de AppleScript dise\u00f1ado de forma maliciosa puede resultar en una finalizaci\u00f3n no esperada de la aplicaci\u00f3n o una revelaci\u00f3n de la memoria del proceso"
    }
  ],
  "id": "CVE-2021-30877",
  "lastModified": "2026-06-17T03:51:03.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-24T19:15:15.790",
  "references": [
    {
      "source": "product-security@apple.com",
      "url": "https://support.apple.com/en-us/HT212869"
    },
    {
      "source": "product-security@apple.com",
      "url": "https://support.apple.com/en-us/HT212871"
    },
    {
      "source": "product-security@apple.com",
      "url": "https://support.apple.com/en-us/HT212872"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://support.apple.com/en-us/HT212869"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://support.apple.com/en-us/HT212871"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://support.apple.com/en-us/HT212872"
    }
  ],
  "sourceIdentifier": "product-security@apple.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-30877 (GCVE-0-2021-30877)

Vulnerability from cvelistv5 – Published: 2021-08-24 18:49 – Updated: 2024-08-03 22:48

Summary

Severity

No CVSS data available.

CWE

Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory

Assigner

apple mitre root

References

3 references

URL	Tags
https://support.apple.com/en-us/HT212869	x_refsource_MISC
https://support.apple.com/en-us/HT212871	x_refsource_MISC
https://support.apple.com/en-us/HT212872	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
Apple	macOS	Affected: unspecified , < 12.0 (custom)
Apple	macOS	Affected: unspecified , < 2021 (custom)
Apple	macOS	Affected: unspecified , < 11.6 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:48:13.906Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212869"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212871"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212872"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "12.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "2021",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "11.6",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Monterey 12.0.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-28T18:28:20.000Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://support.apple.com/en-us/HT212869"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212871"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212872"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "product-security@apple.com",
          "ID": "CVE-2021-30877",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "12.0"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "2021"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "11.6"
                          }
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                      }
                    }
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                "vendor_name": "Apple"
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            }
          ]
        },
        "problemtype": {
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                {
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                  "value": "Processing a maliciously crafted AppleScript binary may result in unexpected application termination or disclosure of process memory"
                }
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        },
        "references": {
          "reference_data": [
            {
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              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212869"
            },
            {
              "name": "https://support.apple.com/en-us/HT212871",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212871"
            },
            {
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              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212872"
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  },
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    "state": "PUBLISHED"
  },
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2021-30877

CVE-2021-30877 (GCVE-0-2021-30877)

Tags

Sightings

Nomenclature

Related by attack behaviour