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ID

VAR-202108-2475


CVE

CVE-2021-38784


TITLE

Allwinner R818 SoC Android Q SDK  In  NULL  Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-017892

DESCRIPTION

There is a NULL pointer dereference in the syscall open_exec function of Allwinner R818 SoC Android Q SDK V1.0 that could executable a malicious file to cause a system crash. R818 is a quad-core smart voice chip with screen. Zhuhai Allwinner Technology Co., Ltd. R818 has a binary vulnerability that can be exploited by attackers to cause a denial of service

Trust: 2.16

sources: NVD: CVE-2021-38784 // JVNDB: JVNDB-2021-017892 // CNVD: CNVD-2021-49172

IOT TAXONOMY

category:['IoT']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-49172

AFFECTED PRODUCTS

vendor:allwinnertechmodel:android q sdkscope:eqversion:1.0

Trust: 1.0

vendor:allwinnermodel:android q sdkscope:eqversion: -

Trust: 0.8

vendor:allwinnermodel:android q sdkscope:eqversion:1.0

Trust: 0.8

vendor:zhuhai allwinnermodel:r818scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2021-49172 // JVNDB: JVNDB-2021-017892 // NVD: CVE-2021-38784

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-38784
value: HIGH

Trust: 1.0

NVD: CVE-2021-38784
value: HIGH

Trust: 0.8

CNVD: CNVD-2021-49172
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202201-1512
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-38784
severity: HIGH
baseScore: 7.8
vectorString: AV:N/AC:L/AU:N/C:N/I:N/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: COMPLETE
exploitabilityScore: 10.0
impactScore: 6.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2021-49172
severity: MEDIUM
baseScore: 4.9
vectorString: AV:L/AC:L/AU:N/C:N/I:N/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 6.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-38784
baseSeverity: HIGH
baseScore: 7.5
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: 3.9
impactScore: 3.6
version: 3.1

Trust: 1.0

NVD: CVE-2021-38784
baseSeverity: HIGH
baseScore: 7.5
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-49172 // JVNDB: JVNDB-2021-017892 // CNNVD: CNNVD-202201-1512 // NVD: CVE-2021-38784

PROBLEMTYPE DATA

problemtype:CWE-476

Trust: 1.0

problemtype:NULL Pointer dereference (CWE-476) [NVD evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-017892 // NVD: CVE-2021-38784

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202201-1512

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202201-1512

PATCH

title:R818url:https://www.allwinnertech.com/index.php?c=product&a=index&id=92

Trust: 0.8

sources: JVNDB: JVNDB-2021-017892

EXTERNAL IDS

db:NVDid:CVE-2021-38784

Trust: 3.2

db:CNVDid:CNVD-2021-49172

Trust: 3.0

db:JVNDBid:JVNDB-2021-017892

Trust: 0.8

db:CNNVDid:CNNVD-202201-1512

Trust: 0.6

sources: CNVD: CNVD-2021-49172 // JVNDB: JVNDB-2021-017892 // CNNVD: CNNVD-202201-1512 // NVD: CVE-2021-38784

REFERENCES

url:https://www.cnvd.org.cn/flaw/show/cnvd-2021-49172

Trust: 2.4

url:https://github.com/pokerfacett/my_cve_credit/blob/master/allwinner%20r818%20soc%ef%bc%9asyscall%20open_exec%20has%20null%20pointer%20dereference%20vulnerability.md

Trust: 1.6

url:https://www.allwinnertech.com/index.php?c=product&a=index&id=92

Trust: 1.6

url:https://vul.wangan.com/a/cnvd-2021-49172

Trust: 1.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-38784

Trust: 1.4

sources: JVNDB: JVNDB-2021-017892 // CNNVD: CNNVD-202201-1512 // NVD: CVE-2021-38784

SOURCES

db:CNVDid:CNVD-2021-49172
db:JVNDBid:JVNDB-2021-017892
db:CNNVDid:CNNVD-202201-1512
db:NVDid:CVE-2021-38784

LAST UPDATE DATE

2024-08-14T14:37:53.482000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-49172date:2021-07-11T00:00:00
db:JVNDBid:JVNDB-2021-017892date:2023-02-28T02:23:00
db:CNNVDid:CNNVD-202201-1512date:2022-03-10T00:00:00
db:NVDid:CVE-2021-38784date:2022-01-26T17:32:25.367

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-49172date:2021-08-09T00:00:00
db:JVNDBid:JVNDB-2021-017892date:2023-02-28T00:00:00
db:CNNVDid:CNNVD-202201-1512date:2022-01-18T00:00:00
db:NVDid:CVE-2021-38784date:2022-01-18T14:15:08.097