Sign-up

ID

VAR-202202-0682


CVE

CVE-2021-45740


TITLE

TOTOLINK A720R  Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2022-004509

DESCRIPTION

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter. TOTOLINK A720R 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. TOTOLINK A720R is a router device. A buffer overflow vulnerability exists in TOTOLINK A720R setWiFiWpsStart, which can be exploited by a remote attacker to submit a special request, execute arbitrary code in the application context or crash the application

Trust: 2.16

sources: NVD: CVE-2021-45740 // JVNDB: JVNDB-2022-004509 // CNVD: CNVD-2022-12738

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2022-12738

AFFECTED PRODUCTS

vendor:totolinkmodel:a720rscope:eqversion:4.1.5cu.470_b20200911

Trust: 1.0

vendor:totolinkmodel:a720rscope:eqversion: -

Trust: 0.8

vendor:totolinkmodel:a720rscope:eqversion:a720r firmware 4.1.5cu.470_b20200911

Trust: 0.8

vendor:totolinkmodel:a720r v4.1.5cu.470 b2020091scope: - version: -

Trust: 0.6

sources: CNVD: CNVD-2022-12738 // JVNDB: JVNDB-2022-004509 // NVD: CVE-2021-45740

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-45740
value: CRITICAL

Trust: 1.0

NVD: CVE-2021-45740
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2022-12738
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202202-254
value: CRITICAL

Trust: 0.6

nvd@nist.gov: CVE-2021-45740
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

CNVD: CNVD-2022-12738
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: 0.6

nvd@nist.gov: CVE-2021-45740
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-2021-45740
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: CNVD: CNVD-2022-12738 // JVNDB: JVNDB-2022-004509 // CNNVD: CNNVD-202202-254 // NVD: CVE-2021-45740

PROBLEMTYPE DATA

problemtype:NVD-CWE-noinfo

Trust: 1.0

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

Trust: 0.8

sources: JVNDB: JVNDB-2022-004509 // NVD: CVE-2021-45740

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202202-254

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202202-254

PATCH

title:Top Pageurl:https://www.totolink.net/

Trust: 0.8

sources: JVNDB: JVNDB-2022-004509

EXTERNAL IDS

db:NVDid:CVE-2021-45740

Trust: 3.8

db:JVNDBid:JVNDB-2022-004509

Trust: 0.8

db:CNVDid:CNVD-2022-12738

Trust: 0.6

db:CNNVDid:CNNVD-202202-254

Trust: 0.6

sources: CNVD: CNVD-2022-12738 // JVNDB: JVNDB-2022-004509 // CNNVD: CNNVD-202202-254 // NVD: CVE-2021-45740

REFERENCES

url:https://github.com/pjqwudi/my_vuln/blob/main/totolink/vuln_4/4.md

Trust: 2.2

url:https://nvd.nist.gov/vuln/detail/cve-2021-45740

Trust: 1.4

sources: CNVD: CNVD-2022-12738 // JVNDB: JVNDB-2022-004509 // CNNVD: CNNVD-202202-254 // NVD: CVE-2021-45740

SOURCES

db:CNVDid:CNVD-2022-12738
db:JVNDBid:JVNDB-2022-004509
db:CNNVDid:CNNVD-202202-254
db:NVDid:CVE-2021-45740

LAST UPDATE DATE

2024-11-23T22:24:59.631000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2022-12738date:2022-02-20T00:00:00
db:JVNDBid:JVNDB-2022-004509date:2023-04-14T07:36:00
db:CNNVDid:CNNVD-202202-254date:2022-03-24T00:00:00
db:NVDid:CVE-2021-45740date:2024-11-21T06:32:59.687

SOURCES RELEASE DATE

db:CNVDid:CNVD-2022-12738date:2022-02-18T00:00:00
db:JVNDBid:JVNDB-2022-004509date:2023-04-14T00:00:00
db:CNNVDid:CNNVD-202202-254date:2022-02-04T00:00:00
db:NVDid:CVE-2021-45740date:2022-02-04T02:15:08.387