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CVE-2021-30851 (GCVE-0-2021-30851)

Vulnerability from cvelistv5 – Published: 2021-08-24 18:49 – Updated: 2024-08-03 22:48
VLAI
Summary
A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.
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 code execution
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple iOS and iPadOS Affected: unspecified , < 15 (custom)
guessed Create a notification for this product.
Apple tvOS Affected: unspecified , < 15 (custom)
guessed Create a notification for this product.
Apple Safari Affected: unspecified , < 15 (custom)
guessed Create a notification for this product.
Apple watchOS Affected: unspecified , < 8 (custom)
guessed Create a notification for this product.
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c\u00f3digo\"}],\"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}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"15.0\",\"matchCriteriaId\":\"F80E547D-86D4-4790-8C0B-8222019C476D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"15.0\",\"matchCriteriaId\":\"090FB24C-D685-4422-A936-821B30F9655D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"15.0\",\"matchCriteriaId\":\"A5354DEB-CF04-4795-8D90-E280F0A859CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"12.0.1\",\"matchCriteriaId\":\"579B2A0D-A84F-45C2-B545-35ECEA3297DA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:12.0.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4480A933-CBEF-4BA6-BFF2-ADBF23F5C9A3\"},{\"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\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2021/10/31/1\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/\",\"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/HT212815\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212816\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/en-us/HT212819\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://support.apple.com/kb/HT212869\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://www.debian.org/security/2021/dsa-4995\",\"source\":\"product-security@apple.com\"},{\"url\":\"https://www.debian.org/security/2021/dsa-4996\",\"source\":\"product-security@apple.com\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2021/10/31/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6MGXCX7P5AHWOQ6IRT477UKT7IS4DAD/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ON5SDVVPVPCAGFPW2GHYATZVZYLPW2L4/\",\"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/HT212815\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://support.apple.com/en-us/HT212816\",\"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/HT212869\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2021/dsa-4995\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.debian.org/security/2021/dsa-4996\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T15:54:17+00:00",
      "cve": "CVE-2021-30851",
      "id": "CVE-2021-30851",
      "initial_release_date": "2021-10-26T00:00:00+00:00",
      "product_status:fixed": "70",
      "product_status:known_affected": "9",
      "product_status:known_not_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "webkitgtk: Memory corruption issue leading to arbitrary code execution",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-30851.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-04T00:46:22Z",
      "cve": "CVE-2021-30851",
      "id": "CVE-2021-30851",
      "initial_release_date": "2023-02-15T03:41:34Z",
      "product_status:known_affected": "47",
      "product_status:known_not_affected": "10",
      "product_status:recommended": "993",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-30851",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-30851.json",
      "version": "20"
    }
  }
}



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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.