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ID

VAR-202103-1352


CVE

CVE-2021-26943


TITLE

ASUS UX360CA BIOS  Vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-005198

DESCRIPTION

The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3). ASUS UX360CA BIOS Contains an unspecified vulnerability.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Asus UX360CA BIOS through 303 is a notebook computer from Asus, Japan. UX360CA BIOS through 303 on ASUS has a security vulnerability

Trust: 2.25

sources: NVD: CVE-2021-26943 // JVNDB: JVNDB-2021-005198 // CNVD: CNVD-2021-27799 // VULMON: CVE-2021-26943

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2021-27799

AFFECTED PRODUCTS

vendor:asusmodel:ux360ca biosscope:ltversion:304

Trust: 1.6

vendor:asustek computermodel:ux360ca biosscope:eqversion: -

Trust: 0.8

vendor:asustek computermodel:ux360ca biosscope:lteversion:303 until

Trust: 0.8

sources: CNVD: CNVD-2021-27799 // JVNDB: JVNDB-2021-005198 // NVD: CVE-2021-26943

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-26943
value: HIGH

Trust: 1.0

NVD: CVE-2021-26943
value: HIGH

Trust: 0.8

CNVD: CNVD-2021-27799
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202103-1711
value: HIGH

Trust: 0.6

VULMON: CVE-2021-26943
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-26943
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.9

CNVD: CNVD-2021-27799
severity: HIGH
baseScore: 7.2
vectorString: AV:L/AC:L/AU:N/C:C/I:C/A:C
accessVector: LOCAL
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 3.9
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

nvd@nist.gov: CVE-2021-26943
baseSeverity: HIGH
baseScore: 8.2
vectorString: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: HIGH
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.5
impactScore: 6.0
version: 3.1

Trust: 1.0

NVD: CVE-2021-26943
baseSeverity: HIGH
baseScore: 8.2
vectorString: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: HIGH
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2021-27799 // VULMON: CVE-2021-26943 // JVNDB: JVNDB-2021-005198 // CNNVD: CNNVD-202103-1711 // NVD: CVE-2021-26943

PROBLEMTYPE DATA

problemtype:NVD-CWE-noinfo

Trust: 1.0

problemtype:Lack of information (CWE-noinfo) [NVD Evaluation ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-005198 // NVD: CVE-2021-26943

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202103-1711

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202103-1711

PATCH

title:[UX360CA/Notebook] BIOS Security Updateurl:https://www.asus.com/support/FAQ/1045541/

Trust: 0.8

title:Patch for UX360CA BIOS through 303 on ASUS code execution vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/257421

Trust: 0.6

title:UX360CA BIOS through 303 on ASUS Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=146869

Trust: 0.6

title:SmmExploiturl:https://github.com/tandasat/SmmExploit

Trust: 0.1

title:PoCurl:https://github.com/Jonathan-Elias/PoC

Trust: 0.1

sources: CNVD: CNVD-2021-27799 // VULMON: CVE-2021-26943 // JVNDB: JVNDB-2021-005198 // CNNVD: CNNVD-202103-1711

EXTERNAL IDS

db:NVDid:CVE-2021-26943

Trust: 3.9

db:JVNDBid:JVNDB-2021-005198

Trust: 0.8

db:CNVDid:CNVD-2021-27799

Trust: 0.6

db:CNNVDid:CNNVD-202103-1711

Trust: 0.6

db:VULMONid:CVE-2021-26943

Trust: 0.1

sources: CNVD: CNVD-2021-27799 // VULMON: CVE-2021-26943 // JVNDB: JVNDB-2021-005198 // CNNVD: CNNVD-202103-1711 // NVD: CVE-2021-26943

REFERENCES

url:https://nvd.nist.gov/vuln/detail/cve-2021-26943

Trust: 2.0

url:https://www.asus.com/support/faq/1045541/

Trust: 1.7

url:https://www.youtube.com/watch?v=1h3afavyeuk

Trust: 1.7

url:https://cwe.mitre.org/data/definitions/.html

Trust: 0.1

url:https://github.com/tandasat/smmexploit

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2021-27799 // VULMON: CVE-2021-26943 // JVNDB: JVNDB-2021-005198 // CNNVD: CNNVD-202103-1711 // NVD: CVE-2021-26943

SOURCES

db:CNVDid:CNVD-2021-27799
db:VULMONid:CVE-2021-26943
db:JVNDBid:JVNDB-2021-005198
db:CNNVDid:CNNVD-202103-1711
db:NVDid:CVE-2021-26943

LAST UPDATE DATE

2024-08-14T15:27:48.001000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2021-27799date:2021-04-13T00:00:00
db:VULMONid:CVE-2021-26943date:2021-04-07T00:00:00
db:JVNDBid:JVNDB-2021-005198date:2021-12-09T06:43:00
db:CNNVDid:CNNVD-202103-1711date:2021-04-21T00:00:00
db:NVDid:CVE-2021-26943date:2021-04-07T14:12:42.170

SOURCES RELEASE DATE

db:CNVDid:CNVD-2021-27799date:2021-04-11T00:00:00
db:VULMONid:CVE-2021-26943date:2021-03-31T00:00:00
db:JVNDBid:JVNDB-2021-005198date:2021-12-09T00:00:00
db:CNNVDid:CNNVD-202103-1711date:2021-03-31T00:00:00
db:NVDid:CVE-2021-26943date:2021-03-31T20:15:14.130