Details of VAR-202004-1702

ID

VAR-202004-1702

CVE

CVE-2018-21191

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016370

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.57, R6100 before 1.0.1.20, R7800 before 1.0.2.40, WNDR3700v4 before 1.0.2.92, WNDR4300 before 1.0.2.94, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62. 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 D6100, etc. are all products of NETGEAR. NETGEAR D6100 is a wireless modem. NETGEAR WNDR3700 is a wireless router. NETGEAR R6100 is a wireless router. 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, R6100 prior to 1.0.1.20, R7800 prior to 1.0.2.40, WNDR3700v4 prior to 1.0.2.92, WNDR4300 prior to 1.0.2.94, 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-2018-21191 // JVNDB: JVNDB-2018-016370 // CNVD: CNVD-2020-28267 // VULMON: CVE-2018-21191

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-28267

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.40	Trust: 1.6
vendor:	netgear	model:	r6100	scope:	lt	version:	1.0.1.20	Trust: 1.6
vendor:	netgear	model:	d6100	scope:	lt	version:	1.0.0.57	Trust: 1.6
vendor:	netgear	model:	wnr2000	scope:	lt	version:	1.0.0.62	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.92	Trust: 1.0
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.92	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.50	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.50	Trust: 0.9
vendor:	netgear	model:	d6100	scope:	eq	version:	1.0.0.57	Trust: 0.8
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.20	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.40	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.92	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.94	Trust: 0.8
vendor:	netgear	model:	wndr4500	scope:	eq	version:	1.0.0.50	Trust: 0.8
vendor:	netgear	model:	wnr2000	scope:	eq	version:	1.0.0.50	Trust: 0.8
vendor:	netgear	model:	wnr2000v5	scope:	lt	version:	1.0.0.62	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.92	Trust: 0.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.94	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:	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:	d6100	scope:	eq	version:	1.0.0.56	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:	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:	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:	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:	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-2020-28267 // VULMON: CVE-2018-21191 // JVNDB: JVNDB-2018-016370 // NVD: CVE-2018-21191

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21191
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2018-21191
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016370
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2020-28267
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2255
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2018-21191
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21191
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-2018-016370
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-2020-28267
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-2018-21191
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-2018-21191
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-2018-016370
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-2020-28267 // VULMON: CVE-2018-21191 // JVNDB: JVNDB-2018-016370 // CNNVD: CNNVD-202004-2255 // NVD: CVE-2018-21191 // NVD: CVE-2018-21191

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016370 // NVD: CVE-2018-21191

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2255

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2255

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016370

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers and Gateways, PSV-2017-2604	url:	https://kb.netgear.com/000055166/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2604	Trust: 0.8
title:	Patch for Multiple NETGEAR product buffer overflow vulnerabilities (CNVD-2020-28267)	url:	https://www.cnvd.org.cn/patchInfo/show/217561	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117347	Trust: 0.6

sources: CNVD: CNVD-2020-28267 // JVNDB: JVNDB-2018-016370 // CNNVD: CNNVD-202004-2255

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21191	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016370	Trust: 0.8
db:	CNVD	id:	CNVD-2020-28267	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2255	Trust: 0.6
db:	VULMON	id:	CVE-2018-21191	Trust: 0.1

sources: CNVD: CNVD-2020-28267 // VULMON: CVE-2018-21191 // JVNDB: JVNDB-2018-016370 // CNNVD: CNNVD-202004-2255 // NVD: CVE-2018-21191

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21191	Trust: 2.0
url:	https://kb.netgear.com/000055166/security-advisory-for-post-authentication-stack-overflow-on-some-routers-and-gateways-psv-2017-2604	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21191	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-2020-28267 // VULMON: CVE-2018-21191 // JVNDB: JVNDB-2018-016370 // CNNVD: CNNVD-202004-2255 // NVD: CVE-2018-21191

SOURCES

db:	CNVD	id:	CNVD-2020-28267
db:	VULMON	id:	CVE-2018-21191
db:	JVNDB	id:	JVNDB-2018-016370
db:	CNNVD	id:	CNNVD-202004-2255
db:	NVD	id:	CVE-2018-21191

LAST UPDATE DATE

2024-11-23T22:44:35.942000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-28267	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21191	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016370	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2255	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21191	date:	2024-11-21T04:03:08.137

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-28267	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21191	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016370	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2255	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21191	date:	2020-04-28T15:15:12.660