CVE-2021-30855 (GCVE-0-2021-30855)
Vulnerability from cvelistv5
Published
2021-08-24 18:49
Modified
2024-08-03 22:48
Severity ?
CWE
  • An application may be able to access restricted files
Summary
A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files.
References
Impacted products
Vendor Product Version
Apple macOS Version: unspecified   < 11.6
 Create a notification for this product.
   Apple macOS Version: unspecified   < 2021
 Create a notification for this product.
   Apple macOS Version: unspecified   < 14.8
 Create a notification for this product.
   Apple macOS Version: unspecified   < 15
 Create a notification for this product.
   Apple macOS Version: unspecified   < 8
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:48:13.886Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212804"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212805"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212807"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://support.apple.com/kb/HT212815"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212814"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212819"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "11.6",
              "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": "14.8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "15",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "8",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "An application may be able to access restricted files",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-01-20T20:06:38",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212804"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212805"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212807"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://support.apple.com/kb/HT212815"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212814"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212819"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "product-security@apple.com",
          "ID": "CVE-2021-30855",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "11.6"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "2021"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "14.8"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "15"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "8"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Apple"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "An application may be able to access restricted files"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.apple.com/en-us/HT212804",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212804"
            },
            {
              "name": "https://support.apple.com/en-us/HT212805",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212805"
            },
            {
              "name": "https://support.apple.com/en-us/HT212807",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212807"
            },
            {
              "name": "https://support.apple.com/kb/HT212815",
              "refsource": "CONFIRM",
              "url": "https://support.apple.com/kb/HT212815"
            },
            {
              "name": "https://support.apple.com/en-us/HT212814",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212814"
            },
            {
              "name": "https://support.apple.com/en-us/HT212819",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212819"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2021-30855",
    "datePublished": "2021-08-24T18:49:21",
    "dateReserved": "2021-04-13T00:00:00",
    "dateUpdated": "2024-08-03T22:48:13.886Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-30855\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2021-08-24T19:15:14.020\",\"lastModified\":\"2024-11-21T06:04:50.983\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files.\"},{\"lang\":\"es\",\"value\":\"Se present\u00f3 un problema de comprobaci\u00f3n en el manejo de los enlaces simb\u00f3licos. Este problema se abord\u00f3 con una comprobaci\u00f3n de enlaces simb\u00f3licos mejorada. Este problema se corrigi\u00f3 en Security Update 2021-005 Catalina, iOS versi\u00f3n 14.8 y iPadOS versi\u00f3n 14.8, iOS versi\u00f3n 15 y iPadOS versi\u00f3n 15, watchOS versi\u00f3n 8, macOS Big Sur versi\u00f3n 11.6. Una aplicaci\u00f3n podr\u00eda acceder a archivos restringidos\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-59\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.8\",\"matchCriteriaId\":\"FCD67B72-0B1D-46A8-A149-8149ED749FEC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.8\",\"matchCriteriaId\":\"56F86481-D995-43D7-982F-5DC6E4682A65\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"10.15.7\",\"matchCriteriaId\":\"EF8C1CB5-DACB-449C-9E07-E477142C589F\"},{\"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_2020-001:*:*:*:*:*:*\",\"matchCriteriaId\":\"F1F4BF7F-90D4-4668-B4E6-B06F4070F448\"},{\"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:supplemental_update:*:*:*:*:*:*\",\"matchCriteriaId\":\"C1C795B9-E58D-467C-83A8-2D45C792292F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"11.6\",\"matchCriteriaId\":\"5F52D69C-8621-4E01-ABDE-8473A590BCB6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"15.0\",\"matchCriteriaId\":\"B32A978E-673C-421D-93A1-CA84D90B67E4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"8.0\",\"matchCriteriaId\":\"5364285F-B3F2-465B-B738-2FC1C8913A44\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/HT212804\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212805\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212807\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212814\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212819\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/kb/HT212815\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212804\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/en-us/HT212805\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/en-us/HT212807\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/en-us/HT212814\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/en-us/HT212819\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/kb/HT212815\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.