CVE-2021-30661 (GCVE-0-2021-30661)

Vulnerability from cvelistv5 – Published: 2021-09-08 14:48 – Updated: 2025-10-21 23:25
VLAI? CISA
Summary
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Assigner
References
Impacted products
Vendor Product Version
Apple iOS and iPadOS Affected: unspecified , < 14.5 (custom)
Create a notification for this product.
    Apple Safari Affected: unspecified , < 14.1 (custom)
Create a notification for this product.
    Apple tvOS Affected: unspecified , < 14.5 (custom)
Create a notification for this product.
    Apple watchOS Affected: unspecified , < 7.4 (custom)
Create a notification for this product.
    Apple macOS Affected: unspecified , < 11.3 (custom)
Create a notification for this product.
    Apple macOS Affected: unspecified , < 12.5 (custom)
Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2021-11-03

Due date: 2021-11-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Unknown

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-30661

Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:40:32.019Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212317"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212323"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212324"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212325"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212341"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://support.apple.com/en-us/HT212318"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-30661",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-29T17:25:03.198561Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30661"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:25:34.470Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30661"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00+00:00",
            "value": "CVE-2021-30661 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "iOS and iPadOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "14.5",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Safari",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "14.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "tvOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "14.5",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "watchOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "7.4",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "11.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "12.5",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Processing maliciously crafted web content may lead to arbitrary code execution.\u00a0Apple is aware of a report that this issue may have been actively exploited.",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-08T14:48:29.000Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212317"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212323"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212324"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212325"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212341"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://support.apple.com/en-us/HT212318"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "product-security@apple.com",
          "ID": "CVE-2021-30661",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "iOS and iPadOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "14.5"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Safari",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "14.1"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "tvOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "14.5"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "watchOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "7.4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "11.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "macOS",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "12.5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Apple"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Processing maliciously crafted web content may lead to arbitrary code execution.\u00a0Apple is aware of a report that this issue may have been actively exploited."
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.apple.com/en-us/HT212317",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212317"
            },
            {
              "name": "https://support.apple.com/en-us/HT212323",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212323"
            },
            {
              "name": "https://support.apple.com/en-us/HT212324",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212324"
            },
            {
              "name": "https://support.apple.com/en-us/HT212325",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212325"
            },
            {
              "name": "https://support.apple.com/en-us/HT212341",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212341"
            },
            {
              "name": "https://support.apple.com/en-us/HT212318",
              "refsource": "MISC",
              "url": "https://support.apple.com/en-us/HT212318"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2021-30661",
    "datePublished": "2021-09-08T14:48:29.000Z",
    "dateReserved": "2021-04-13T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:25:34.470Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2021-30661",
      "cwes": "[\"CWE-416\"]",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-11-17",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-30661",
      "product": "Multiple Products",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit Storage contain a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.",
      "vendorProject": "Apple",
      "vulnerabilityName": "Apple Multiple Products WebKit Storage Use-After-Free Vulnerability"
    },
    "fkie_nvd": {
      "cisaActionDue": "2021-11-17",
      "cisaExploitAdd": "2021-11-03",
      "cisaRequiredAction": "Apply updates per vendor instructions.",
      "cisaVulnerabilityName": "Apple Multiple Products WebKit Storage Use-After-Free Vulnerability",
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"14.1\", \"matchCriteriaId\": \"42EAB49D-2EA1-4B1F-BDAC-3165D1CB3759\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"14.5\", \"matchCriteriaId\": \"3EAAE2C1-EF21-4567-99F1-335D1EF955D1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"12.5.3\", \"matchCriteriaId\": \"443BF1FD-EC67-437D-A9CA-EEB3EF25B701\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"14.0\", \"versionEndExcluding\": \"14.5\", \"matchCriteriaId\": \"1CB84E58-2162-4B65-BD9E-F59C26DD4A60\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"11.0\", \"versionEndExcluding\": \"11.3\", \"matchCriteriaId\": \"4E699CCC-31F5-458E-A59C-79B3AF143747\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"14.5\", \"matchCriteriaId\": \"D5B77841-F161-47AB-8043-3E0346E3AA25\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"7.4\", \"matchCriteriaId\": \"CFFFE00C-0AA6-4F60-ABF4-E68877BFD8F8\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to 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 uso de la memoria previamente liberada con una administraci\\u00f3n de la memoria mejorada. Este problema es corregido en Safari versi\\u00f3n 14.1, iOS versi\\u00f3n 12.5.3, iOS versi\\u00f3n 14.5 y iPadOS versi\\u00f3n 14.5, watchOS versi\\u00f3n 7.4, tvOS versi\\u00f3n 14.5, macOS Big Sur versi\\u00f3n 11.3. El procesamiento de contenido web maliciosamente dise\\u00f1ado puede conllevar a una ejecuci\\u00f3n de c\\u00f3digo arbitrario. Apple est\\u00e1 al tanto de un informe de que este problema puede haber sido explotado activamente\"}]",
      "id": "CVE-2021-30661",
      "lastModified": "2024-11-21T06:04:23.010",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:P/A:P\", \"baseScore\": 6.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2021-09-08T15:15:13.320",
      "references": "[{\"url\": \"https://support.apple.com/en-us/HT212317\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212318\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212323\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212324\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212325\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"source\": \"product-security@apple.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212317\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212318\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212323\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212324\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212325\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://support.apple.com/en-us/HT212341\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "product-security@apple.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-30661\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2021-09-08T15:15:13.320\",\"lastModified\":\"2025-10-23T14:53:48.827\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to 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 uso de la memoria previamente liberada con una administraci\u00f3n de la memoria mejorada. Este problema es corregido en Safari versi\u00f3n 14.1, iOS versi\u00f3n 12.5.3, iOS versi\u00f3n 14.5 y iPadOS versi\u00f3n 14.5, watchOS versi\u00f3n 7.4, tvOS versi\u00f3n 14.5, macOS Big Sur versi\u00f3n 11.3. El procesamiento de contenido web maliciosamente dise\u00f1ado puede conllevar a una ejecuci\u00f3n de c\u00f3digo arbitrario. Apple est\u00e1 al tanto de un informe de que este problema puede haber sido explotado activamente\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Apple Multiple Products WebKit Storage Use-After-Free Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.1\",\"matchCriteriaId\":\"42EAB49D-2EA1-4B1F-BDAC-3165D1CB3759\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.5\",\"matchCriteriaId\":\"3EAAE2C1-EF21-4567-99F1-335D1EF955D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"12.5.3\",\"matchCriteriaId\":\"443BF1FD-EC67-437D-A9CA-EEB3EF25B701\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"14.0\",\"versionEndExcluding\":\"14.5\",\"matchCriteriaId\":\"1CB84E58-2162-4B65-BD9E-F59C26DD4A60\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"11.0\",\"versionEndExcluding\":\"11.3\",\"matchCriteriaId\":\"4E699CCC-31F5-458E-A59C-79B3AF143747\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.5\",\"matchCriteriaId\":\"D5B77841-F161-47AB-8043-3E0346E3AA25\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"7.4\",\"matchCriteriaId\":\"CFFFE00C-0AA6-4F60-ABF4-E68877BFD8F8\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/HT212317\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212318\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212323\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212324\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212325\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212341\",\"source\":\"product-security@apple.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212317\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212318\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212323\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212324\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212325\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212341\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30661\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"product\": \"iOS and iPadOS\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"14.5\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}, {\"product\": \"Safari\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"14.1\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}, {\"product\": \"tvOS\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"14.5\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}, {\"product\": \"watchOS\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"7.4\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}, {\"product\": \"macOS\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"11.3\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}, {\"product\": \"macOS\", \"vendor\": \"Apple\", \"versions\": [{\"lessThan\": \"12.5\", \"status\": \"affected\", \"version\": \"unspecified\", \"versionType\": \"custom\"}]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..\"}], \"problemTypes\": [{\"descriptions\": [{\"description\": \"Processing maliciously crafted web content may lead to arbitrary code execution.\\u00a0Apple is aware of a report that this issue may have been actively exploited.\", \"lang\": \"en\", \"type\": \"text\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2021-09-08T14:48:29.000Z\", \"orgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"shortName\": \"apple\"}, \"references\": [{\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212317\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212323\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212324\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212325\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212341\"}, {\"tags\": [\"x_refsource_MISC\"], \"url\": \"https://support.apple.com/en-us/HT212318\"}], \"x_legacyV4Record\": {\"CVE_data_meta\": {\"ASSIGNER\": \"product-security@apple.com\", \"ID\": \"CVE-2021-30661\", \"STATE\": \"PUBLIC\"}, \"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"product_name\": \"iOS and iPadOS\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"14.5\"}]}}, {\"product_name\": \"Safari\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"14.1\"}]}}, {\"product_name\": \"tvOS\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"14.5\"}]}}, {\"product_name\": \"watchOS\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"7.4\"}]}}, {\"product_name\": \"macOS\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"11.3\"}]}}, {\"product_name\": \"macOS\", \"version\": {\"version_data\": [{\"version_affected\": \"\u003c\", \"version_value\": \"12.5\"}]}}]}, \"vendor_name\": \"Apple\"}]}}, \"data_format\": \"MITRE\", \"data_type\": \"CVE\", \"data_version\": \"4.0\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"Processing maliciously crafted web content may lead to arbitrary code execution.\\u00a0Apple is aware of a report that this issue may have been actively exploited.\"}]}]}, \"references\": {\"reference_data\": [{\"name\": \"https://support.apple.com/en-us/HT212317\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212317\"}, {\"name\": \"https://support.apple.com/en-us/HT212323\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212323\"}, {\"name\": \"https://support.apple.com/en-us/HT212324\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212324\"}, {\"name\": \"https://support.apple.com/en-us/HT212325\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212325\"}, {\"name\": \"https://support.apple.com/en-us/HT212341\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212341\"}, {\"name\": \"https://support.apple.com/en-us/HT212318\", \"refsource\": \"MISC\", \"url\": \"https://support.apple.com/en-us/HT212318\"}]}}}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T22:40:32.019Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212317\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212323\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212324\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212325\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212341\"}, {\"tags\": [\"x_refsource_MISC\", \"x_transferred\"], \"url\": \"https://support.apple.com/en-us/HT212318\"}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 8.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-30661\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-01-29T17:25:03.198561Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30661\"}}}], \"timeline\": [{\"time\": \"2021-11-03T00:00:00+00:00\", \"lang\": \"en\", \"value\": \"CVE-2021-30661 added to CISA KEV\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-01-29T17:23:59.695Z\"}}]}",
      "cveMetadata": "{\"assignerOrgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"assignerShortName\": \"apple\", \"cveId\": \"CVE-2021-30661\", \"datePublished\": \"2021-09-08T14:48:29.000Z\", \"dateReserved\": \"2021-04-13T00:00:00.000Z\", \"dateUpdated\": \"2025-07-30T01:38:00.670Z\", \"state\": \"PUBLISHED\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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 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.