Details of VAR-202004-1713

ID

VAR-202004-1713

CVE

CVE-2018-21202

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016351

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.30, 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, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, and WNDR4500v3 before 1.0.0.54. plural NETGEAR The device is vulnerable to out-of-bounds writes.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 WNDR3700 is a wireless router. 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, 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, WNDR3700v4 prior to 1.0.2.96, WNDR4300 prior to 1.0.2.98, WNDR4300v2 prior to 1.0.0.54, and WNDR4500v3 prior to 1.0.0.54

Trust: 2.25

sources: NVD: CVE-2018-21202 // JVNDB: JVNDB-2018-016351 // CNVD: CNVD-2021-46354 // VULMON: CVE-2018-21202

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-46354

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:	r6100	scope:	lt	version:	1.0.1.20	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:	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:	1.0.0.54	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.54	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.54	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:	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:	wndr4500	scope:	eq	version:	1.0.0.54	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.0.118	Trust: 0.6
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.24	Trust: 0.6
vendor:	netgear	model:	wndr4300v2	scope:	lt	version:	1.0.0.54	Trust: 0.6
vendor:	netgear	model:	wndr4500v3	scope:	lt	version:	1.0.0.54	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.96	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:	1.0.0.118	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:	1.0.0.56	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:	wndr4500	scope:	eq	version:	1.0.0.50	Trust: 0.1
vendor:	netgear	model:	wndr4500	scope:	eq	version:	1.0.0.52	Trust: 0.1

sources: CNVD: CNVD-2021-46354 // VULMON: CVE-2018-21202 // JVNDB: JVNDB-2018-016351 // NVD: CVE-2018-21202

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21202
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21202
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016351
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-46354
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2268
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21202
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21202
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-2018-016351
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-2021-46354
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-2018-21202
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-2018-21202
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-2018-016351
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-2021-46354 // VULMON: CVE-2018-21202 // JVNDB: JVNDB-2018-016351 // CNNVD: CNNVD-202004-2268 // NVD: CVE-2018-21202 // NVD: CVE-2018-21202

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016351 // NVD: CVE-2018-21202

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2268

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2268

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016351

PATCH

title:	Security Advisory for Pre-Authentication Stack Overflow on Some Routers and Gateways, PSV-2017-2590	url:	https://kb.netgear.com/000055147/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2590	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-46354)	url:	https://www.cnvd.org.cn/patchInfo/show/276301	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117360	Trust: 0.6

sources: CNVD: CNVD-2021-46354 // JVNDB: JVNDB-2018-016351 // CNNVD: CNNVD-202004-2268

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21202	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016351	Trust: 0.8
db:	CNVD	id:	CNVD-2021-46354	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2268	Trust: 0.6
db:	VULMON	id:	CVE-2018-21202	Trust: 0.1

sources: CNVD: CNVD-2021-46354 // VULMON: CVE-2018-21202 // JVNDB: JVNDB-2018-016351 // CNNVD: CNNVD-202004-2268 // NVD: CVE-2018-21202

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21202	Trust: 2.0
url:	https://kb.netgear.com/000055147/security-advisory-for-pre-authentication-stack-overflow-on-some-routers-and-gateways-psv-2017-2590	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21202	Trust: 0.8
url:	https://cwe.mitre.org/data/definitions/787.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

sources: CNVD: CNVD-2021-46354 // VULMON: CVE-2018-21202 // JVNDB: JVNDB-2018-016351 // CNNVD: CNNVD-202004-2268 // NVD: CVE-2018-21202

SOURCES

db:	CNVD	id:	CNVD-2021-46354
db:	VULMON	id:	CVE-2018-21202
db:	JVNDB	id:	JVNDB-2018-016351
db:	CNNVD	id:	CNNVD-202004-2268
db:	NVD	id:	CVE-2018-21202

LAST UPDATE DATE

2024-11-23T22:05:39.905000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-46354	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21202	date:	2020-05-04T00:00:00
db:	JVNDB	id:	JVNDB-2018-016351	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2268	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21202	date:	2024-11-21T04:03:09.880

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-46354	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21202	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016351	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2268	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21202	date:	2020-04-28T16:15:13.327