CVE-2021-30900

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.

CVSS v3 7.8 HIGH
CVSS v2.0 9.3 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://support.apple.com/en-us/HT212867	Vendor Advisory
https://support.apple.com/en-us/HT212868	Vendor Advisory
https://support.apple.com/kb/HT212872	Vendor Advisory
https://support.apple.com/en-us/HT212867	Vendor Advisory
https://support.apple.com/en-us/HT212868	Vendor Advisory
https://support.apple.com/kb/HT212872	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:apple:ipados::::::::
	cpe:2.3:o:apple:ipados:15.0:::::::*
	cpe:2.3:o:apple:iphone_os::::::::
	cpe:2.3:o:apple:iphone_os:15.0:::::::*
	cpe:2.3:o:apple:macos::::::::

History

03 Apr 2025, 20:52

Type	Values Removed	Values Added
CPE	cpe:2.3:o:apple:ipad_os::::::::	cpe:2.3:o:apple:ipados::::::::

Information

Published : 2021-08-24 19:15

Updated : 2025-04-03 20:52

NVD link : CVE-2021-30900

Mitre link : CVE-2021-30900

CVE.ORG link : CVE-2021-30900

JSON object : View

Products Affected

apple

ipados
iphone_os
macos

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2021-30900", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 9.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/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"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/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"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2021-08-24T19:15:18.083", "references": [{"url": "https://support.apple.com/en-us/HT212867", "tags": ["Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/HT212868", "tags": ["Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/kb/HT212872", "tags": ["Vendor Advisory"], "source": "product-security@apple.com"}, {"url": "https://support.apple.com/en-us/HT212867", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://support.apple.com/en-us/HT212868", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://support.apple.com/kb/HT212872", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges."}, {"lang": "es", "value": "Se abord\u00f3 un problema de escritura fuera de l\u00edmites con una comprobaci\u00f3n de l\u00edmites mejorada. Este problema se corrigi\u00f3 en iOS versi\u00f3n 14.8.1 y iPadOS versi\u00f3n 14.8.1, iOS versi\u00f3n 15.1 y iPadOS versi\u00f3n 15.1. Una aplicaci\u00f3n maliciosa puede ser capaz de ejecutar c\u00f3digo arbitrario con privilegios del kernel"}], "lastModified": "2025-04-03T20:52:23.230", "cisaActionDue": "2023-04-20", "cisaExploitAdd": "2023-03-30", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DD8D9814-E083-498D-BAC3-6E8FD1A259B7", "versionEndExcluding": "14.8.1"}, {"criteria": "cpe:2.3:o:apple:ipados:15.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6361C54F-4F5D-4624-8A1F-69DBC6AD4A69"}, {"criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54888682-EF77-4F2A-B07F-AA86B0C65717", "versionEndExcluding": "14.8.1"}, {"criteria": "cpe:2.3:o:apple:iphone_os:15.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A332DEC8-FB74-404E-BE6A-46DB0DEDAA59"}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AA9BFC9C-A4FE-4CE2-8DE8-0782082EEDE6", "versionEndExcluding": "11.6.1"}], "operator": "OR"}]}], "sourceIdentifier": "product-security@apple.com", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability"}