Details of VAR-202004-1664

ID

VAR-202004-1664

CVE

CVE-2018-21218

TITLE

plural NETGEAR Classic buffer overflow vulnerability in the product

Trust: 0.8

sources: JVNDB: JVNDB-2018-016343

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, R6100 before 1.0.1.20, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, 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 D6100 is a wireless modem. NETGEAR R6100 is a wireless router. 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, R6100 prior to 1.0.1.20, R7500 prior to 1.0.0.118, R7500v2 prior to 1.0.3.24, 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-2018-21218 // JVNDB: JVNDB-2018-016343 // CNVD: CNVD-2021-46570 // VULMON: CVE-2018-21218

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-46570

AFFECTED PRODUCTS

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:	d7800	scope:	lt	version:	1.0.1.30	Trust: 1.6
vendor:	netgear	model:	r6100	scope:	lt	version:	1.0.1.20	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.0.118	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.2.52	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.98	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:	wndr4300	scope:	eq	version:	1.0.0.50	Trust: 0.9
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.30	Trust: 0.8
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.20	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.24	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:	wndr4500	scope:	eq	version:	1.0.0.50	Trust: 0.8
vendor:	netgear	model:	wnr2000	scope:	eq	version:	1.0.0.62	Trust: 0.8
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.24	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.96	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:	wnr2000v5	scope:	lt	version:	1.0.0.62	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:	r6100	scope:	eq	version:	1.0.1.12	Trust: 0.1
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.14	Trust: 0.1
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.16	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:	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:	1.0.0.52	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-2021-46570 // VULMON: CVE-2018-21218 // JVNDB: JVNDB-2018-016343 // NVD: CVE-2018-21218

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21218
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21218
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016343
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-46570
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2295
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21218
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21218
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-2018-016343
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-2021-46570
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-2018-21218
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-2018-21218
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-2018-016343
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-2021-46570 // VULMON: CVE-2018-21218 // JVNDB: JVNDB-2018-016343 // CNNVD: CNNVD-202004-2295 // NVD: CVE-2018-21218 // NVD: CVE-2018-21218

PROBLEMTYPE DATA

problemtype:

CWE-120

Trust: 1.8

sources: JVNDB: JVNDB-2018-016343 // NVD: CVE-2018-21218

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2295

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2295

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016343

PATCH

title:	Security Advisory for Pre-Authentication Buffer Overflow on Some Routers and Gateways, PSV-2017-2483	url:	https://kb.netgear.com/000055119/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2483	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-46570)	url:	https://www.cnvd.org.cn/patchInfo/show/276571	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117387	Trust: 0.6

sources: CNVD: CNVD-2021-46570 // JVNDB: JVNDB-2018-016343 // CNNVD: CNNVD-202004-2295

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21218	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016343	Trust: 0.8
db:	CNVD	id:	CNVD-2021-46570	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2295	Trust: 0.6
db:	VULMON	id:	CVE-2018-21218	Trust: 0.1

sources: CNVD: CNVD-2021-46570 // VULMON: CVE-2018-21218 // JVNDB: JVNDB-2018-016343 // CNNVD: CNNVD-202004-2295 // NVD: CVE-2018-21218

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21218	Trust: 2.0
url:	https://kb.netgear.com/000055119/security-advisory-for-pre-authentication-buffer-overflow-on-some-routers-and-gateways-psv-2017-2483	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21218	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-2021-46570 // VULMON: CVE-2018-21218 // JVNDB: JVNDB-2018-016343 // CNNVD: CNNVD-202004-2295 // NVD: CVE-2018-21218

SOURCES

db:	CNVD	id:	CNVD-2021-46570
db:	VULMON	id:	CVE-2018-21218
db:	JVNDB	id:	JVNDB-2018-016343
db:	CNNVD	id:	CNNVD-202004-2295
db:	NVD	id:	CVE-2018-21218

LAST UPDATE DATE

2024-11-23T22:16:30.009000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-46570	date:	2021-07-02T00:00:00
db:	VULMON	id:	CVE-2018-21218	date:	2020-05-04T00:00:00
db:	JVNDB	id:	JVNDB-2018-016343	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2295	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21218	date:	2024-11-21T04:03:12.327

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-46570	date:	2020-07-02T00:00:00
db:	VULMON	id:	CVE-2018-21218	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016343	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2295	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21218	date:	2020-04-28T16:15:14.310