Details of VAR-202004-1667

ID

VAR-202004-1667

CVE

CVE-2018-21221

TITLE

plural NETGEAR Classic buffer overflow vulnerability in device

Trust: 0.8

sources: JVNDB: JVNDB-2018-016335

DESCRIPTION

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, and R9000 before 1.0.2.52. NETGEAR D3600 , D6000 , R9000 A classic buffer overflow vulnerability exists on the device.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. NETGEAR R9000, etc. are all products of NETGEAR. NETGEAR R9000 is a wireless router. NETGEAR D3600 is a wireless modem. NETGEAR D6000 is a wireless modem. The vulnerability stems from the fact that when the network system or product performs operations on the memory, it does not correctly verify the data boundary, resulting in incorrect read and write operations to other associated memory locations. This affects D3600 prior to 1.0.0.67, D6000 prior to 1.0.0.67, and R9000 prior to 1.0.2.52

Trust: 2.25

sources: NVD: CVE-2018-21221 // JVNDB: JVNDB-2018-016335 // CNVD: CNVD-2021-48927 // VULMON: CVE-2018-21221

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-48927

AFFECTED PRODUCTS

vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.2.52	Trust: 1.6
vendor:	netgear	model:	d3600	scope:	lt	version:	1.0.0.67	Trust: 1.6
vendor:	netgear	model:	d6000	scope:	lt	version:	1.0.0.67	Trust: 1.6
vendor:	netgear	model:	d3600	scope:	eq	version:	1.0.0.67	Trust: 0.8
vendor:	netgear	model:	d6000	scope:	eq	version:	1.0.0.67	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	d3600	scope:	eq	version:	1.0.0.49	Trust: 0.2
vendor:	netgear	model:	d3600	scope:	eq	version:	-	Trust: 0.1
vendor:	netgear	model:	d3600	scope:	eq	version:	1.0.0.61	Trust: 0.1
vendor:	netgear	model:	d6000	scope:	eq	version:	-	Trust: 0.1
vendor:	netgear	model:	d6000	scope:	eq	version:	1.0.0.49	Trust: 0.1
vendor:	netgear	model:	d6000	scope:	eq	version:	1.0.0.61	Trust: 0.1
vendor:	netgear	model:	r9000	scope:	eq	version:	-	Trust: 0.1
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.4	Trust: 0.1
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.30	Trust: 0.1
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.40	Trust: 0.1

sources: CNVD: CNVD-2021-48927 // VULMON: CVE-2018-21221 // JVNDB: JVNDB-2018-016335 // NVD: CVE-2018-21221

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21221
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21221
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016335
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-48927
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2313
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21221
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21221
severity:	MEDIUM
baseScore:	5.8
vectorString:	AV:A/AC:L/AU:N/C:P/I:P/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	6.5
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.1
NVD:	JVNDB-2018-016335
severity:	MEDIUM
baseScore:	5.8
vectorString:	AV:A/AC:L/AU:N/C:P/I:P/A:P
accessVector:	ADJACENT NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
CNVD:	CNVD-2021-48927
severity:	MEDIUM
baseScore:	5.8
vectorString:	AV:A/AC:L/AU:N/C:P/I:P/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	6.5
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2018-21221
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
cve@mitre.org:	CVE-2018-21221
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.0
Trust: 1.0
NVD:	JVNDB-2018-016335
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT 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-2021-48927 // VULMON: CVE-2018-21221 // JVNDB: JVNDB-2018-016335 // CNNVD: CNNVD-202004-2313 // NVD: CVE-2018-21221 // NVD: CVE-2018-21221

PROBLEMTYPE DATA

problemtype:

CWE-120

Trust: 1.8

sources: JVNDB: JVNDB-2018-016335 // NVD: CVE-2018-21221

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2313

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2313

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016335

PATCH

title:	Security Advisory for Pre-Authentication Buffer Overflow on Some Routers and Gateways, PSV-2017-2459	url:	https://kb.netgear.com/000055116/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2459	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-48927)	url:	https://www.cnvd.org.cn/patchInfo/show/277351	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117404	Trust: 0.6

sources: CNVD: CNVD-2021-48927 // JVNDB: JVNDB-2018-016335 // CNNVD: CNNVD-202004-2313

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21221	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016335	Trust: 0.8
db:	CNVD	id:	CNVD-2021-48927	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2313	Trust: 0.6
db:	VULMON	id:	CVE-2018-21221	Trust: 0.1

sources: CNVD: CNVD-2021-48927 // VULMON: CVE-2018-21221 // JVNDB: JVNDB-2018-016335 // CNNVD: CNNVD-202004-2313 // NVD: CVE-2018-21221

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21221	Trust: 2.0
url:	https://kb.netgear.com/000055116/security-advisory-for-pre-authentication-buffer-overflow-on-some-routers-and-gateways-psv-2017-2459	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21221	Trust: 0.8
url:	https://cwe.mitre.org/data/definitions/120.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2021-48927 // VULMON: CVE-2018-21221 // JVNDB: JVNDB-2018-016335 // CNNVD: CNNVD-202004-2313 // NVD: CVE-2018-21221

SOURCES

db:	CNVD	id:	CNVD-2021-48927
db:	VULMON	id:	CVE-2018-21221
db:	JVNDB	id:	JVNDB-2018-016335
db:	CNNVD	id:	CNNVD-202004-2313
db:	NVD	id:	CVE-2018-21221

LAST UPDATE DATE

2024-11-23T21:59:20.084000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-48927	date:	2021-07-09T00:00:00
db:	VULMON	id:	CVE-2018-21221	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016335	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2313	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21221	date:	2024-11-21T04:03:12.800

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-48927	date:	2020-04-29T00:00:00
db:	VULMON	id:	CVE-2018-21221	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016335	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2313	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21221	date:	2020-04-28T17:15:12.867