Details of VAR-202202-1238

ID

VAR-202202-1238

CVE

CVE-2021-46262

TITLE

Tenda AC series router AC11 Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2022-004962

DESCRIPTION

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the PPPoE module. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data. Tenda AC series router AC11 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. The Tenda AC11 is a router from the Chinese company Tenda

Trust: 2.16

sources: NVD: CVE-2021-46262 // JVNDB: JVNDB-2022-004962 // CNVD: CNVD-2022-15166

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2022-15166

AFFECTED PRODUCTS

vendor:	tenda	model:	ac11	scope:	eq	version:	02.03.01.104_cn	Trust: 1.0
vendor:	tenda	model:	ac11	scope:	eq	version:	ac11 firmware 02.03.01.104_cn	Trust: 0.8
vendor:	tenda	model:	ac11	scope:	eq	version:	-	Trust: 0.8
vendor:	tenda	model:	ac series router ac11 v02.03.01.104 cn	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2022-15166 // JVNDB: JVNDB-2022-004962 // NVD: CVE-2021-46262

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-46262
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2021-46262
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2022-15166
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202202-1299
value:	CRITICAL
Trust: 0.6

nvd@nist.gov:	CVE-2021-46262
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-2022-15166
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-2021-46262
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-2021-46262
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-2022-15166 // JVNDB: JVNDB-2022-004962 // CNNVD: CNNVD-202202-1299 // NVD: CVE-2021-46262

PROBLEMTYPE DATA

problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2022-004962 // NVD: CVE-2021-46262

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202202-1299

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202202-1299

PATCH

title:	Top Page	url:	https://www.tendacn.com/default.html	Trust: 0.8
title:	Patch for Tenda AC Series Router Buffer Overflow Vulnerability (CNVD-2022-15166)	url:	https://www.cnvd.org.cn/patchInfo/show/322281	Trust: 0.6

sources: CNVD: CNVD-2022-15166 // JVNDB: JVNDB-2022-004962

EXTERNAL IDS

db:	NVD	id:	CVE-2021-46262	Trust: 3.8
db:	JVNDB	id:	JVNDB-2022-004962	Trust: 0.8
db:	CNVD	id:	CNVD-2022-15166	Trust: 0.6
db:	CNNVD	id:	CNNVD-202202-1299	Trust: 0.6

sources: CNVD: CNVD-2022-15166 // JVNDB: JVNDB-2022-004962 // CNNVD: CNNVD-202202-1299 // NVD: CVE-2021-46262

REFERENCES

url:	https://github.com/ainevsia/cve-request/tree/main/tenda/7	Trust: 2.4
url:	https://nvd.nist.gov/vuln/detail/cve-2021-46262	Trust: 1.4

sources: CNVD: CNVD-2022-15166 // JVNDB: JVNDB-2022-004962 // CNNVD: CNNVD-202202-1299 // NVD: CVE-2021-46262

SOURCES

db:	CNVD	id:	CNVD-2022-15166
db:	JVNDB	id:	JVNDB-2022-004962
db:	CNNVD	id:	CNNVD-202202-1299
db:	NVD	id:	CVE-2021-46262

LAST UPDATE DATE

2024-11-23T21:58:30.878000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2022-15166	date:	2022-02-27T00:00:00
db:	JVNDB	id:	JVNDB-2022-004962	date:	2023-05-12T03:35:00
db:	CNNVD	id:	CNNVD-202202-1299	date:	2022-03-10T00:00:00
db:	NVD	id:	CVE-2021-46262	date:	2024-11-21T06:33:49.880

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2022-15166	date:	2022-02-27T00:00:00
db:	JVNDB	id:	JVNDB-2022-004962	date:	2023-05-12T00:00:00
db:	CNNVD	id:	CNNVD-202202-1299	date:	2022-02-15T00:00:00
db:	NVD	id:	CVE-2021-46262	date:	2022-02-15T20:15:07.527