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ID

VAR-202104-0619


CVE

CVE-2021-1796


TITLE

iOS  and  iPadOS  Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-012699

DESCRIPTION

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. iOS and iPadOS Exists in 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. Apple Bluetooth is a component used by Apple in the United States to support Bluetooth in Apple mobile devices. A security vulnerability exists in Apple iOS 14.4 and iPadOS 14.4 due to an out-of-bounds read of input. Apple iOS and iPadOS could allow a remote malicious user to execute arbitrary code on the system, caused by an out-of-bounds write in the Bluetooth component. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system with elevated privileges

Trust: 1.8

sources: NVD: CVE-2021-1796 // JVNDB: JVNDB-2021-012699 // VULHUB: VHN-376456 // VULMON: CVE-2021-1796

AFFECTED PRODUCTS

vendor:applemodel:iphone osscope:ltversion:14.4

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vendor:applemodel:ipad osscope:ltversion:14.4

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

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vendor:アップルmodel:ipadosscope:eqversion:14.4

Trust: 0.8

sources: JVNDB: JVNDB-2021-012699 // NVD: CVE-2021-1796

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-1796
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-1796
value: CRITICAL

Trust: 0.8

CNNVD: CNNVD-202102-151
value: CRITICAL

Trust: 0.6

VULHUB: VHN-376456
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-1796
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

VULHUB: VHN-376456
severity: HIGH
baseScore: 7.5
vectorString: AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2021-1796
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 5.9
version: 3.1

Trust: 1.0

NVD: CVE-2021-1796
baseSeverity: CRITICAL
baseScore: 9.8
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-376456 // JVNDB: JVNDB-2021-012699 // CNNVD: CNNVD-202102-151 // NVD: CVE-2021-1796

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.1

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

Trust: 0.8

sources: VULHUB: VHN-376456 // JVNDB: JVNDB-2021-012699 // NVD: CVE-2021-1796

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202102-151

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202102-151

PATCH

title:HT212146 Apple  Security updateurl:https://support.apple.com/en-us/HT212146

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title:Apple iOS and iPadOS Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=140363

Trust: 0.6

sources: JVNDB: JVNDB-2021-012699 // CNNVD: CNNVD-202102-151

EXTERNAL IDS

db:NVDid:CVE-2021-1796

Trust: 3.4

db:JVNDBid:JVNDB-2021-012699

Trust: 0.8

db:AUSCERTid:ESB-2021.0352

Trust: 0.6

db:CNNVDid:CNNVD-202102-151

Trust: 0.6

db:VULHUBid:VHN-376456

Trust: 0.1

db:VULMONid:CVE-2021-1796

Trust: 0.1

sources: VULHUB: VHN-376456 // VULMON: CVE-2021-1796 // JVNDB: JVNDB-2021-012699 // CNNVD: CNNVD-202102-151 // NVD: CVE-2021-1796

REFERENCES

url:https://support.apple.com/en-us/ht212146

Trust: 1.7

url:https://nvd.nist.gov/vuln/detail/cve-2021-1796

Trust: 1.4

url:https://www.auscert.org.au/bulletins/esb-2021.0352/

Trust: 0.6

url:https://exchange.xforce.ibmcloud.com/vulnerabilities/196030

Trust: 0.1

sources: VULHUB: VHN-376456 // VULMON: CVE-2021-1796 // JVNDB: JVNDB-2021-012699 // CNNVD: CNNVD-202102-151 // NVD: CVE-2021-1796

SOURCES

db:VULHUBid:VHN-376456
db:VULMONid:CVE-2021-1796
db:JVNDBid:JVNDB-2021-012699
db:CNNVDid:CNNVD-202102-151
db:NVDid:CVE-2021-1796

LAST UPDATE DATE

2024-08-14T12:18:43.852000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-376456date:2021-04-07T00:00:00
db:VULMONid:CVE-2021-1796date:2021-04-07T00:00:00
db:JVNDBid:JVNDB-2021-012699date:2022-09-06T02:20:00
db:CNNVDid:CNNVD-202102-151date:2021-04-08T00:00:00
db:NVDid:CVE-2021-1796date:2021-04-07T18:37:12.970

SOURCES RELEASE DATE

db:VULHUBid:VHN-376456date:2021-04-02T00:00:00
db:VULMONid:CVE-2021-1796date:2021-04-02T00:00:00
db:JVNDBid:JVNDB-2021-012699date:2022-09-06T00:00:00
db:CNNVDid:CNNVD-202102-151date:2021-02-02T00:00:00
db:NVDid:CVE-2021-1796date:2021-04-02T19:15:19.413