Details of VAR-202004-1657

ID

VAR-202004-1657

CVE

CVE-2018-21211

TITLE

plural NETGEAR Classic buffer overflow vulnerability in the product

Trust: 0.8

sources: JVNDB: JVNDB-2018-016359

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, D6100 before 1.0.0.56, D7800 before 1.0.1.30, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62. plural NETGEAR The product contains a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. NETGEAR D3600, etc. are all products of NETGEAR. NETGEAR D3600 is a wireless modem. NETGEAR R7500 is a wireless router. NETGEAR D6100 is a wireless modem. The vulnerability stems from the fact that when the network system or product performs operations on the memory, the data boundary is not correctly verified, 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, D6100 prior to 1.0.0.56, D7800 prior to 1.0.1.30, R7500 prior to 1.0.0.118, R7500v2 prior to 1.0.3.24, R7800 prior to 1.0.2.40, R9000 prior to 1.0.2.52, WNDR3700v4 prior to 1.0.2.96, WNDR4300 prior to 1.0.2.98, WNDR4300v2 prior to 1.0.0.50, WNDR4500v3 prior to 1.0.0.50, and WNR2000v5 prior to 1.0.0.62

Trust: 2.25

sources: NVD: CVE-2018-21211 // JVNDB: JVNDB-2018-016359 // CNVD: CNVD-2021-46563 // VULMON: CVE-2018-21211

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-46563

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.40	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.2.52	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.0.118	Trust: 1.6
vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.30	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.98	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:	d6100	scope:	lt	version:	1.0.0.56	Trust: 1.6
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.96	Trust: 1.0
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.3.24	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wnr2000	scope:	lt	version:	1.0.0.62	Trust: 1.0
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.118	Trust: 0.9
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:	d6100	scope:	eq	version:	1.0.0.56	Trust: 0.8
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.30	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.24	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.40	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.96	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.98	Trust: 0.8
vendor:	netgear	model:	wnr2000v5	scope:	lt	version:	1.0.0.62	Trust: 0.6
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.24	Trust: 0.6
vendor:	netgear	model:	wndr4300v2	scope:	lt	version:	1.0.0.50	Trust: 0.6
vendor:	netgear	model:	wndr4500v3	scope:	lt	version:	1.0.0.50	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.96	Trust: 0.6
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:	d6100	scope:	eq	version:	1.0.0.50 0.0.50	Trust: 0.1
vendor:	netgear	model:	d6100	scope:	eq	version:	1.0.0.55	Trust: 0.1
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.22	Trust: 0.1
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.24	Trust: 0.1
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.28	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.108	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.110	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.112	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.116	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.122	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.124	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.130	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.10	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.16	Trust: 0.1
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.20	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.16	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.28	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.30	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.32	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.36	Trust: 0.1
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.38	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
vendor:	netgear	model:	wndr3700	scope:	eq	version:	-	Trust: 0.1
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.86	Trust: 0.1
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.88	Trust: 0.1
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.92	Trust: 0.1
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.94	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.48	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.50	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.52	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.54	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.56	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.88	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.90	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.92	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.94	Trust: 0.1
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.96	Trust: 0.1
vendor:	netgear	model:	wndr4500	scope:	eq	version:	-	Trust: 0.1
vendor:	netgear	model:	wndr4500	scope:	eq	version:	1.0.0.48	Trust: 0.1
vendor:	netgear	model:	wnr2000	scope:	eq	version:	1.0.0.42	Trust: 0.1
vendor:	netgear	model:	wnr2000	scope:	eq	version:	1.0.0.48	Trust: 0.1
vendor:	netgear	model:	wnr2000	scope:	eq	version:	1.0.0.58	Trust: 0.1

sources: CNVD: CNVD-2021-46563 // VULMON: CVE-2018-21211 // JVNDB: JVNDB-2018-016359 // NVD: CVE-2018-21211

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21211
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21211
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016359
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-46563
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2284
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21211
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21211
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-2018-016359
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-2021-46563
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-2018-21211
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-2018-21211
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-2018-016359
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-2021-46563 // VULMON: CVE-2018-21211 // JVNDB: JVNDB-2018-016359 // CNNVD: CNNVD-202004-2284 // NVD: CVE-2018-21211 // NVD: CVE-2018-21211

PROBLEMTYPE DATA

problemtype:

CWE-120

Trust: 1.8

sources: JVNDB: JVNDB-2018-016359 // NVD: CVE-2018-21211

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2284

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2284

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016359

PATCH

title:	Security Advisory for Pre-Authentication Buffer Overflow on Some Routers and Gateways, PSV-2017-2491	url:	https://kb.netgear.com/000055138/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2491	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-46563)	url:	https://www.cnvd.org.cn/patchInfo/show/276321	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117376	Trust: 0.6

sources: CNVD: CNVD-2021-46563 // JVNDB: JVNDB-2018-016359 // CNNVD: CNNVD-202004-2284

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21211	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016359	Trust: 0.8
db:	CNVD	id:	CNVD-2021-46563	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2284	Trust: 0.6
db:	VULMON	id:	CVE-2018-21211	Trust: 0.1

sources: CNVD: CNVD-2021-46563 // VULMON: CVE-2018-21211 // JVNDB: JVNDB-2018-016359 // CNNVD: CNNVD-202004-2284 // NVD: CVE-2018-21211

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21211	Trust: 2.0
url:	https://kb.netgear.com/000055138/security-advisory-for-pre-authentication-buffer-overflow-on-some-routers-and-gateways-psv-2017-2491	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21211	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-2021-46563 // VULMON: CVE-2018-21211 // JVNDB: JVNDB-2018-016359 // CNNVD: CNNVD-202004-2284 // NVD: CVE-2018-21211

SOURCES

db:	CNVD	id:	CNVD-2021-46563
db:	VULMON	id:	CVE-2018-21211
db:	JVNDB	id:	JVNDB-2018-016359
db:	CNNVD	id:	CNNVD-202004-2284
db:	NVD	id:	CVE-2018-21211

LAST UPDATE DATE

2024-11-23T23:11:26.727000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-46563	date:	2021-07-02T00:00:00
db:	VULMON	id:	CVE-2018-21211	date:	2020-05-05T00:00:00
db:	JVNDB	id:	JVNDB-2018-016359	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2284	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21211	date:	2024-11-21T04:03:11.257

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-46563	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21211	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016359	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2284	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21211	date:	2020-04-28T16:15:13.950