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ID

VAR-202108-1243


CVE

CVE-2021-30928


TITLE

Out-of-bounds write vulnerability in multiple Apple products

Trust: 0.8

sources: JVNDB: JVNDB-2021-020971

DESCRIPTION

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.6, watchOS 8, tvOS 15, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15. Processing a maliciously crafted image may lead to arbitrary code execution. iPadOS , iOS , macOS Multiple Apple products have an out-of-bounds write vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apple macOS. Interaction with the CoreGraphics library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.The specific flaw exists within the parsing of PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none

Trust: 2.43

sources: NVD: CVE-2021-30928 // JVNDB: JVNDB-2021-020971 // ZDI: ZDI-22-356 // VULHUB: VHN-390661 // VULMON: CVE-2021-30928

AFFECTED PRODUCTS

vendor:applemodel:icloudscope:eqversion:13.0

Trust: 1.0

vendor:applemodel:ipadosscope:ltversion:14.8

Trust: 1.0

vendor:applemodel:tvosscope:ltversion:15.0

Trust: 1.0

vendor:applemodel:macosscope:gteversion:11.0

Trust: 1.0

vendor:applemodel:watchosscope:ltversion:8.0

Trust: 1.0

vendor:applemodel:macosscope:ltversion:11.6

Trust: 1.0

vendor:applemodel:iphone osscope:ltversion:15.0

Trust: 1.0

vendor:アップルmodel:ipadosscope: - version: -

Trust: 0.8

vendor:アップルmodel:icloudscope: - version: -

Trust: 0.8

vendor:アップルmodel:tvosscope: - version: -

Trust: 0.8

vendor:アップルmodel:iosscope: - version: -

Trust: 0.8

vendor:アップルmodel:watchosscope:eqversion:8.0

Trust: 0.8

vendor:アップルmodel:macosscope: - version: -

Trust: 0.8

vendor:applemodel:macosscope: - version: -

Trust: 0.7

sources: ZDI: ZDI-22-356 // JVNDB: JVNDB-2021-020971 // NVD: CVE-2021-30928

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-30928
value: HIGH

Trust: 1.0

NVD: CVE-2021-30928
value: HIGH

Trust: 0.8

ZDI: CVE-2021-30928
value: LOW

Trust: 0.7

CNNVD: CNNVD-202108-2024
value: HIGH

Trust: 0.6

VULHUB: VHN-390661
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2021-30928
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

VULHUB: VHN-390661
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2021-30928
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.8
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: CVE-2021-30928
baseSeverity: HIGH
baseScore: 7.8
vectorString: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

ZDI: CVE-2021-30928
baseSeverity: LOW
baseScore: 3.3
vectorString: AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 1.8
impactScore: 1.4
version: 3.0

Trust: 0.7

sources: ZDI: ZDI-22-356 // VULHUB: VHN-390661 // JVNDB: JVNDB-2021-020971 // CNNVD: CNNVD-202108-2024 // NVD: CVE-2021-30928

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.1

problemtype:Out-of-bounds writing (CWE-787) [NVD evaluation ]

Trust: 0.8

sources: VULHUB: VHN-390661 // JVNDB: JVNDB-2021-020971 // NVD: CVE-2021-30928

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202108-2024

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202108-2024

PATCH

title:HT212815 Apple  Security updateurl:https://support.apple.com/en-us/HT212804

Trust: 0.8

title:Apple has issued an update to correct this vulnerability.url:https://support.apple.com/HT212804

Trust: 0.7

title:Apple Repair measures for buffer errors and vulnerabilities in many productsurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=186813

Trust: 0.6

sources: ZDI: ZDI-22-356 // JVNDB: JVNDB-2021-020971 // CNNVD: CNNVD-202108-2024

EXTERNAL IDS

db:NVDid:CVE-2021-30928

Trust: 4.1

db:ZDIid:ZDI-22-356

Trust: 1.3

db:JVNDBid:JVNDB-2021-020971

Trust: 0.8

db:ZDI_CANid:ZDI-CAN-14515

Trust: 0.7

db:CNNVDid:CNNVD-202108-2024

Trust: 0.6

db:VULHUBid:VHN-390661

Trust: 0.1

db:VULMONid:CVE-2021-30928

Trust: 0.1

sources: ZDI: ZDI-22-356 // VULHUB: VHN-390661 // VULMON: CVE-2021-30928 // JVNDB: JVNDB-2021-020971 // CNNVD: CNNVD-202108-2024 // NVD: CVE-2021-30928

REFERENCES

url:https://support.apple.com/kb/ht212953

Trust: 2.5

url:https://support.apple.com/en-us/ht212804

Trust: 1.7

url:https://support.apple.com/en-us/ht212807

Trust: 1.7

url:https://support.apple.com/en-us/ht212814

Trust: 1.7

url:https://support.apple.com/en-us/ht212815

Trust: 1.7

url:https://support.apple.com/en-us/ht212819

Trust: 1.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-30928

Trust: 0.8

url:https://support.apple.com/ht212804

Trust: 0.7

url:https://www.zerodayinitiative.com/advisories/zdi-22-356/

Trust: 0.6

url:https://nvd.nist.gov

Trust: 0.1

sources: ZDI: ZDI-22-356 // VULHUB: VHN-390661 // VULMON: CVE-2021-30928 // JVNDB: JVNDB-2021-020971 // CNNVD: CNNVD-202108-2024 // NVD: CVE-2021-30928

CREDITS

Mickey Jin (@patch1t) of Trend Micro

Trust: 1.3

sources: ZDI: ZDI-22-356 // CNNVD: CNNVD-202108-2024

SOURCES

db:ZDIid:ZDI-22-356
db:VULHUBid:VHN-390661
db:VULMONid:CVE-2021-30928
db:JVNDBid:JVNDB-2021-020971
db:CNNVDid:CNNVD-202108-2024
db:NVDid:CVE-2021-30928

LAST UPDATE DATE

2024-08-14T14:11:15.819000+00:00


SOURCES UPDATE DATE

db:ZDIid:ZDI-22-356date:2022-02-16T00:00:00
db:VULHUBid:VHN-390661date:2022-10-11T00:00:00
db:VULMONid:CVE-2021-30928date:2021-08-24T00:00:00
db:JVNDBid:JVNDB-2021-020971date:2024-07-17T01:51:00
db:CNNVDid:CNNVD-202108-2024date:2022-05-30T00:00:00
db:NVDid:CVE-2021-30928date:2023-11-07T03:33:54.373

SOURCES RELEASE DATE

db:ZDIid:ZDI-22-356date:2022-02-16T00:00:00
db:VULHUBid:VHN-390661date:2021-08-24T00:00:00
db:VULMONid:CVE-2021-30928date:2021-08-24T00:00:00
db:JVNDBid:JVNDB-2021-020971date:2024-07-17T00:00:00
db:CNNVDid:CNNVD-202108-2024date:2021-08-24T00:00:00
db:NVDid:CVE-2021-30928date:2021-08-24T19:15:20.170