Details of VAR-202004-1715

ID

VAR-202004-1715

CVE

CVE-2018-21204

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016346

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 1.0.0.50, and WNDR4500v3 before 1.0.0.50. 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 1.0.0.50, and WNDR4500v3 prior to 1.0.0.50

Trust: 2.25

sources: NVD: CVE-2018-21204 // JVNDB: JVNDB-2018-016346 // CNVD: CNVD-2021-46356 // VULMON: CVE-2018-21204

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-46356

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:	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:	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:	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:	1.0.0.118	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:	1.0.0.50	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:	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

sources: CNVD: CNVD-2021-46356 // JVNDB: JVNDB-2018-016346 // NVD: CVE-2018-21204

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21204
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21204
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2018-016346
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-46356
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2271
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21204
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21204
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-2018-016346
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-2021-46356
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-2018-21204
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-2018-21204
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-2018-016346
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-2021-46356 // VULMON: CVE-2018-21204 // JVNDB: JVNDB-2018-016346 // CNNVD: CNNVD-202004-2271 // NVD: CVE-2018-21204 // NVD: CVE-2018-21204

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016346 // NVD: CVE-2018-21204

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2271

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2271

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016346

PATCH

title:	Security Advisory for Pre-Authentication Stack Overflow on Some Routers and Gateways, PSV-2017-2569	url:	https://kb.netgear.com/000055145/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2569	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-46356)	url:	https://www.cnvd.org.cn/patchInfo/show/276306	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117363	Trust: 0.6

sources: CNVD: CNVD-2021-46356 // JVNDB: JVNDB-2018-016346 // CNNVD: CNNVD-202004-2271

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21204	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016346	Trust: 0.8
db:	CNVD	id:	CNVD-2021-46356	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2271	Trust: 0.6
db:	VULMON	id:	CVE-2018-21204	Trust: 0.1

sources: CNVD: CNVD-2021-46356 // VULMON: CVE-2018-21204 // JVNDB: JVNDB-2018-016346 // CNNVD: CNNVD-202004-2271 // NVD: CVE-2018-21204

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21204	Trust: 2.0
url:	https://kb.netgear.com/000055145/security-advisory-for-pre-authentication-stack-overflow-on-some-routers-and-gateways-psv-2017-2569	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21204	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-2021-46356 // VULMON: CVE-2018-21204 // JVNDB: JVNDB-2018-016346 // CNNVD: CNNVD-202004-2271 // NVD: CVE-2018-21204

SOURCES

db:	CNVD	id:	CNVD-2021-46356
db:	VULMON	id:	CVE-2018-21204
db:	JVNDB	id:	JVNDB-2018-016346
db:	CNNVD	id:	CNNVD-202004-2271
db:	NVD	id:	CVE-2018-21204

LAST UPDATE DATE

2024-11-23T22:33:27.797000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-46356	date:	2021-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21204	date:	2020-05-06T00:00:00
db:	JVNDB	id:	JVNDB-2018-016346	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2271	date:	2020-05-07T00:00:00
db:	NVD	id:	CVE-2018-21204	date:	2024-11-21T04:03:10.180

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-46356	date:	2020-07-01T00:00:00
db:	VULMON	id:	CVE-2018-21204	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016346	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2271	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21204	date:	2020-04-28T16:15:13.450