Details of VAR-202004-1716

ID

VAR-202004-1716

CVE

CVE-2018-21205

TITLE

plural NETGEAR Classic buffer overflow vulnerability in device

Trust: 0.8

sources: JVNDB: JVNDB-2018-016347

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.30, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, WN3100RPv2 before 1.0.0.56, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50. plural NETGEAR 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 D7800, etc. are all products of NETGEAR. NETGEAR D7800 is a wireless modem. NETGEAR EX2700 is a wireless network signal extender. 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. Attackers can use this vulnerability to cause buffer overflow or heap overflow. This affects D7800 prior to 1.0.1.30, EX2700 prior to 1.0.1.28, R6100 prior to 1.0.1.20, 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, WN2000RPTv3 prior to 1.0.1.20, WN3000RPv3 prior to 1.0.2.50, WN3100RPv2 prior to 1.0.0.56, WNDR3700v4 prior to 1.0.2.96, WNDR4300 prior to 1.0.2.98, WNDR4300v2 prior to 1.0.0.50, and WNDR4500v3 prior to 1.0.0.50

Trust: 2.25

sources: NVD: CVE-2018-21205 // JVNDB: JVNDB-2018-016347 // CNVD: CNVD-2021-46357 // VULMON: CVE-2018-21205

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-46357

AFFECTED PRODUCTS

vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.30	Trust: 1.6
vendor:	netgear	model:	ex2700	scope:	lt	version:	1.0.1.28	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:	r7800	scope:	lt	version:	1.0.2.40	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.98	Trust: 1.6
vendor:	netgear	model:	r900	scope:	lt	version:	1.0.2.52	Trust: 1.0
vendor:	netgear	model:	wn3100rp	scope:	lt	version:	1.0.0.56	Trust: 1.0
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:	wn3000rp	scope:	lt	version:	1.0.2.50	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wn2000rpt	scope:	lt	version:	1.0.1.20	Trust: 1.0
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.118	Trust: 0.9
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.30	Trust: 0.8
vendor:	netgear	model:	ex2700	scope:	eq	version:	1.0.1.28	Trust: 0.8
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.20	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.3.24	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.2.40	Trust: 0.8
vendor:	netgear	model:	wn2000rpt	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.1.20	Trust: 0.8
vendor:	netgear	model:	wn3100rp	scope:	eq	version:	1.0.2.50	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.0.56	Trust: 0.8
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.24	Trust: 0.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.2.52	Trust: 0.6
vendor:	netgear	model:	wn2000rptv3	scope:	lt	version:	1.0.1.20	Trust: 0.6
vendor:	netgear	model:	wn3000rpv3	scope:	lt	version:	1.0.2.50	Trust: 0.6
vendor:	netgear	model:	wn3100rpv2	scope:	lt	version:	1.0.0.56	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:	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:	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:	wn2000rpt	scope:	eq	version:	1.0.1.8	Trust: 0.1
vendor:	netgear	model:	wn2000rpt	scope:	eq	version:	1.0.1.14	Trust: 0.1
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.0.52	Trust: 0.1
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.0.56	Trust: 0.1
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.0.68	Trust: 0.1
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.2.44	Trust: 0.1
vendor:	netgear	model:	wn3100rp	scope:	eq	version:	1.0.0.20	Trust: 0.1
vendor:	netgear	model:	wn3100rp	scope:	eq	version:	1.0.0.40	Trust: 0.1
vendor:	netgear	model:	wn3100rp	scope:	eq	version:	1.0.0.42	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

sources: CNVD: CNVD-2021-46357 // VULMON: CVE-2018-21205 // JVNDB: JVNDB-2018-016347 // NVD: CVE-2018-21205

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21205
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21205
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016347
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-46357
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2275
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21205
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21205
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-2018-016347
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-2021-46357
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-2018-21205
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-2018-21205
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-2018-016347
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-2021-46357 // VULMON: CVE-2018-21205 // JVNDB: JVNDB-2018-016347 // CNNVD: CNNVD-202004-2275 // NVD: CVE-2018-21205 // NVD: CVE-2018-21205

PROBLEMTYPE DATA

problemtype:

CWE-120

Trust: 1.8

sources: JVNDB: JVNDB-2018-016347 // NVD: CVE-2018-21205

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2275

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2275

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016347

PATCH

title:	Security Advisory for Pre-Authentication Stack Overflow on Some Routers, Gateways, and Extenders, PSV-2017-2568	url:	https://kb.netgear.com/000055144/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2568	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-46357)	url:	https://www.cnvd.org.cn/patchInfo/show/276311	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117367	Trust: 0.6

sources: CNVD: CNVD-2021-46357 // JVNDB: JVNDB-2018-016347 // CNNVD: CNNVD-202004-2275

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21205	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016347	Trust: 0.8
db:	CNVD	id:	CNVD-2021-46357	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2275	Trust: 0.6
db:	VULMON	id:	CVE-2018-21205	Trust: 0.1

sources: CNVD: CNVD-2021-46357 // VULMON: CVE-2018-21205 // JVNDB: JVNDB-2018-016347 // CNNVD: CNNVD-202004-2275 // NVD: CVE-2018-21205

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21205	Trust: 2.0
url:	https://kb.netgear.com/000055144/security-advisory-for-pre-authentication-stack-overflow-on-some-routers-gateways-and-extenders-psv-2017-2568	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21205	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-2021-46357 // VULMON: CVE-2018-21205 // JVNDB: JVNDB-2018-016347 // CNNVD: CNNVD-202004-2275 // NVD: CVE-2018-21205

SOURCES

db:	CNVD	id:	CNVD-2021-46357
db:	VULMON	id:	CVE-2018-21205
db:	JVNDB	id:	JVNDB-2018-016347
db:	CNNVD	id:	CNNVD-202004-2275
db:	NVD	id:	CVE-2018-21205

LAST UPDATE DATE

2024-11-23T22:25:32.220000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-46357	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21205	date:	2020-05-05T00:00:00
db:	JVNDB	id:	JVNDB-2018-016347	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2275	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21205	date:	2024-11-21T04:03:10.330

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-46357	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21205	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016347	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2275	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21205	date:	2020-04-28T16:15:13.497