Sign-up

ID

VAR-202108-2348


CVE

CVE-2021-38786


TITLE

Allwinner R818 SoC Android Q SDK  In  NULL  Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-017937

DESCRIPTION

There is a NULL pointer dereference in media/libcedarc/vdecoder of Allwinner R818 SoC Android Q SDK V1.0, which could cause a media crash (denial of service). 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-2021-38786 // JVNDB: JVNDB-2021-017937 // CNVD: CNVD-2021-49173

IOT TAXONOMY

category:['IoT']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-49173

AFFECTED PRODUCTS

vendor:allwinnertechmodel:android q sdkscope:eqversion:1.0

Trust: 1.0

vendor:allwinnermodel:android q sdkscope:eqversion:1.0

Trust: 0.8

vendor:allwinnermodel:android q sdkscope:eqversion: -

Trust: 0.8

vendor:zhuhai allwinnermodel:r818scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2021-49173 // JVNDB: JVNDB-2021-017937 // NVD: CVE-2021-38786

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-38786
value: HIGH

Trust: 1.0

NVD: CVE-2021-38786
value: HIGH

Trust: 0.8

CNVD: CNVD-2021-49173
value: MEDIUM

Trust: 0.6

CNNVD: CNNVD-202201-1690
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-38786
severity: MEDIUM
baseScore: 5.0
vectorString: AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: PARTIAL
exploitabilityScore: 10.0
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2021-49173
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-2021-38786
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-2021-38786
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-2021-49173 // JVNDB: JVNDB-2021-017937 // CNNVD: CNNVD-202201-1690 // NVD: CVE-2021-38786

PROBLEMTYPE DATA

problemtype:CWE-476

Trust: 1.0

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

Trust: 0.8

sources: JVNDB: JVNDB-2021-017937 // NVD: CVE-2021-38786

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202201-1690

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202201-1690

PATCH

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

Trust: 0.8

title:Allwinner Technology R818 Fixes for code issue vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=179708

Trust: 0.6

sources: JVNDB: JVNDB-2021-017937 // CNNVD: CNNVD-202201-1690

EXTERNAL IDS

db:NVDid:CVE-2021-38786

Trust: 3.2

db:CNVDid:CNVD-2021-49173

Trust: 3.0

db:JVNDBid:JVNDB-2021-017937

Trust: 0.8

db:CNNVDid:CNNVD-202201-1690

Trust: 0.6

sources: CNVD: CNVD-2021-49173 // JVNDB: JVNDB-2021-017937 // CNNVD: CNNVD-202201-1690 // NVD: CVE-2021-38786

REFERENCES

url:https://vul.wangan.com/a/cnvd-2021-49173

Trust: 2.4

url:https://www.cnvd.org.cn/flaw/show/cnvd-2021-49173

Trust: 1.6

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

Trust: 1.6

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

Trust: 1.6

url:https://nvd.nist.gov/vuln/detail/cve-2021-38786

Trust: 1.4

sources: JVNDB: JVNDB-2021-017937 // CNNVD: CNNVD-202201-1690 // NVD: CVE-2021-38786

SOURCES

db:CNVDid:CNVD-2021-49173
db:JVNDBid:JVNDB-2021-017937
db:CNNVDid:CNNVD-202201-1690
db:NVDid:CVE-2021-38786

LAST UPDATE DATE

2024-08-14T15:37:58.121000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-49173date:2021-07-11T00:00:00
db:JVNDBid:JVNDB-2021-017937date:2023-03-08T06:50:00
db:CNNVDid:CNNVD-202201-1690date:2022-02-14T00:00:00
db:NVDid:CVE-2021-38786date:2022-01-26T17:32:42.777

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-49173date:2021-08-09T00:00:00
db:JVNDBid:JVNDB-2021-017937date:2023-03-08T00:00:00
db:CNNVDid:CNNVD-202201-1690date:2022-01-19T00:00:00
db:NVDid:CVE-2021-38786date:2022-01-19T12:15:09.927