Sign-up

ID

VAR-202201-0857


CVE

CVE-2021-40396


TITLE

Advantech DeviceOn/iService  Vulnerability regarding improper default permissions in

Trust: 0.8

sources: JVNDB: JVNDB-2022-004461

DESCRIPTION

A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iService 1.1.7. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability. Advantech DeviceOn/iService There is a vulnerability in improper default permissions.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. Advantech is an application system of China Advantech Company providing intelligent electric bus management system. There is a security vulnerability in Advantech DeviceOn/iService 1.1.7, which can be exploited by an attacker to replace a specially crafted file in the system to elevate the privilege to NT SYSTEM

Trust: 1.71

sources: NVD: CVE-2021-40396 // JVNDB: JVNDB-2022-004461 // VULHUB: VHN-401744

AFFECTED PRODUCTS

vendor:advantechmodel:deviceon\/iservicescope:eqversion:1.1.7

Trust: 1.0

vendor:アドバンテック株式会社model:deviceon/iservicescope:eqversion: -

Trust: 0.8

vendor:アドバンテック株式会社model:deviceon/iservicescope:eqversion:1.1.7

Trust: 0.8

sources: JVNDB: JVNDB-2022-004461 // NVD: CVE-2021-40396

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-40396
value: HIGH

Trust: 1.0

talos-cna@cisco.com: CVE-2021-40396
value: HIGH

Trust: 1.0

NVD: CVE-2021-40396
value: HIGH

Trust: 0.8

CNNVD: CNNVD-202201-1557
value: HIGH

Trust: 0.6

VULHUB: VHN-401744
value: HIGH

Trust: 0.1

nvd@nist.gov: CVE-2021-40396
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: 1.8

VULHUB: VHN-401744
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: 0.1

talos-cna@cisco.com: CVE-2021-40396
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.0
impactScore: 6.0
version: 3.0

Trust: 1.8

nvd@nist.gov: CVE-2021-40396
baseSeverity: HIGH
baseScore: 8.8
vectorString: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
attackVector: LOCAL
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.0
impactScore: 6.0
version: 3.1

Trust: 1.0

sources: VULHUB: VHN-401744 // JVNDB: JVNDB-2022-004461 // CNNVD: CNNVD-202201-1557 // NVD: CVE-2021-40396 // NVD: CVE-2021-40396

PROBLEMTYPE DATA

problemtype:CWE-276

Trust: 1.1

problemtype:Inappropriate default permissions (CWE-276) [NVD evaluation ]

Trust: 0.8

sources: VULHUB: VHN-401744 // JVNDB: JVNDB-2022-004461 // NVD: CVE-2021-40396

THREAT TYPE

local

Trust: 0.6

sources: CNNVD: CNNVD-202201-1557

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202201-1557

PATCH

title:Top Pageurl:https://www.advantech.com/en

Trust: 0.8

title:Advantech Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=178426

Trust: 0.6

sources: JVNDB: JVNDB-2022-004461 // CNNVD: CNNVD-202201-1557

EXTERNAL IDS

db:NVDid:CVE-2021-40396

Trust: 3.3

db:TALOSid:TALOS-2021-1408

Trust: 2.5

db:JVNDBid:JVNDB-2022-004461

Trust: 0.8

db:CS-HELPid:SB2022011915

Trust: 0.6

db:CNNVDid:CNNVD-202201-1557

Trust: 0.6

db:CNVDid:CNVD-2022-08289

Trust: 0.1

db:VULHUBid:VHN-401744

Trust: 0.1

sources: VULHUB: VHN-401744 // JVNDB: JVNDB-2022-004461 // CNNVD: CNNVD-202201-1557 // NVD: CVE-2021-40396

REFERENCES

url:https://talosintelligence.com/vulnerability_reports/talos-2021-1408

Trust: 3.1

url:https://nvd.nist.gov/vuln/detail/cve-2021-40396

Trust: 1.4

url:https://www.cybersecurity-help.cz/vdb/sb2022011915

Trust: 0.6

sources: VULHUB: VHN-401744 // JVNDB: JVNDB-2022-004461 // CNNVD: CNNVD-202201-1557 // NVD: CVE-2021-40396

CREDITS

Discovered by Yuri Kramarz of Cisco Talos.

Trust: 0.6

sources: CNNVD: CNNVD-202201-1557

SOURCES

db:VULHUBid:VHN-401744
db:JVNDBid:JVNDB-2022-004461
db:CNNVDid:CNNVD-202201-1557
db:NVDid:CVE-2021-40396

LAST UPDATE DATE

2024-11-23T22:36:58.898000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-401744date:2022-05-31T00:00:00
db:JVNDBid:JVNDB-2022-004461date:2023-04-12T07:48:00
db:CNNVDid:CNNVD-202201-1557date:2022-06-01T00:00:00
db:NVDid:CVE-2021-40396date:2024-11-21T06:24:02.327

SOURCES RELEASE DATE

db:VULHUBid:VHN-401744date:2022-01-28T00:00:00
db:JVNDBid:JVNDB-2022-004461date:2023-04-12T00:00:00
db:CNNVDid:CNNVD-202201-1557date:2022-01-18T00:00:00
db:NVDid:CVE-2021-40396date:2022-01-28T20:15:11.440