Details of VAR-202004-1673

ID

VAR-202004-1673

CVE

CVE-2018-21171

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016380

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R7800 before 1.0.2.40, R9000 before 1.0.3.6, WNDR3700v4 before 1.0.2.92, and WNDR4300 before 1.0.2.98. 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 R9000, etc. are all products of NETGEAR. NETGEAR R9000 is a wireless router. NETGEAR R7800 is a wireless router. NETGEAR D6100 is a wireless modem. The vulnerability stems from the fact that the network system or product performs an operation on the memory, and the data boundary is not correctly verified, resulting in an incorrect read and write operation to other associated memory locations. The attacker The vulnerability can be exploited to cause buffer overflow or heap overflow. This affects D6100 prior to 1.0.0.57, R7800 prior to 1.0.2.40, R9000 prior to 1.0.3.6, WNDR3700v4 prior to 1.0.2.92, and WNDR4300 prior to 1.0.2.98

Trust: 2.25

sources: NVD: CVE-2018-21171 // JVNDB: JVNDB-2018-016380 // CNVD: CNVD-2020-28110 // VULMON: CVE-2018-21171

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-28110

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.40	Trust: 1.6
vendor:	netgear	model:	d6100	scope:	lt	version:	1.0.0.57	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.98	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.2.40	Trust: 1.0
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.92	Trust: 1.0
vendor:	netgear	model:	d6100	scope:	eq	version:	1.0.0.57	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:	1.0.2.92	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.98	Trust: 0.8
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.92	Trust: 0.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.3.6	Trust: 0.6

sources: CNVD: CNVD-2020-28110 // JVNDB: JVNDB-2018-016380 // NVD: CVE-2018-21171

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21171
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2018-21171
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016380
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2020-28110
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2214
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2018-21171
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21171
severity:	MEDIUM
baseScore:	5.2
vectorString:	AV:A/AC:L/AU:S/C:P/I:P/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	5.1
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.1
NVD:	JVNDB-2018-016380
severity:	MEDIUM
baseScore:	5.2
vectorString:	AV:A/AC:L/AU:S/C:P/I:P/A:P
accessVector:	ADJACENT NETWORK
accessComplexity:	LOW
authentication:	SINGLE
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-2020-28110
severity:	MEDIUM
baseScore:	5.2
vectorString:	AV:A/AC:L/AU:S/C:P/I:P/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	5.1
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2018-21171
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	0.9
impactScore:	5.9
version:	3.1
Trust: 1.0
cve@mitre.org:	CVE-2018-21171
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	0.9
impactScore:	5.9
version:	3.0
Trust: 1.0
NVD:	JVNDB-2018-016380
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2020-28110 // VULMON: CVE-2018-21171 // JVNDB: JVNDB-2018-016380 // CNNVD: CNNVD-202004-2214 // NVD: CVE-2018-21171 // NVD: CVE-2018-21171

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016380 // NVD: CVE-2018-21171

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2214

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2214

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016380

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers and Gateways, PSV-2017-2632	url:	https://kb.netgear.com/000055187/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2632	Trust: 0.8
title:	Patch for Multiple NETGEAR product buffer overflow vulnerabilities (CNVD-2020-28110)	url:	https://www.cnvd.org.cn/patchInfo/show/217421	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117307	Trust: 0.6

sources: CNVD: CNVD-2020-28110 // JVNDB: JVNDB-2018-016380 // CNNVD: CNNVD-202004-2214

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21171	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016380	Trust: 0.8
db:	CNVD	id:	CNVD-2020-28110	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2214	Trust: 0.6
db:	VULMON	id:	CVE-2018-21171	Trust: 0.1

sources: CNVD: CNVD-2020-28110 // VULMON: CVE-2018-21171 // JVNDB: JVNDB-2018-016380 // CNNVD: CNNVD-202004-2214 // NVD: CVE-2018-21171

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21171	Trust: 2.0
url:	https://kb.netgear.com/000055187/security-advisory-for-post-authentication-stack-overflow-on-some-routers-and-gateways-psv-2017-2632	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21171	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-2020-28110 // VULMON: CVE-2018-21171 // JVNDB: JVNDB-2018-016380 // CNNVD: CNNVD-202004-2214 // NVD: CVE-2018-21171

SOURCES

db:	CNVD	id:	CNVD-2020-28110
db:	VULMON	id:	CVE-2018-21171
db:	JVNDB	id:	JVNDB-2018-016380
db:	CNNVD	id:	CNNVD-202004-2214
db:	NVD	id:	CVE-2018-21171

LAST UPDATE DATE

2024-11-23T22:33:27.855000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-28110	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21171	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016380	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2214	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21171	date:	2024-11-21T04:03:04.757

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-28110	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21171	date:	2020-04-27T00:00:00
db:	JVNDB	id:	JVNDB-2018-016380	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2214	date:	2020-04-27T00:00:00
db:	NVD	id:	CVE-2018-21171	date:	2020-04-27T18:15:12.920