Details of VAR-202004-1692

ID

VAR-202004-1692

CVE

CVE-2018-21181

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016365

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.28, EX2700 before 1.0.1.32, EX6200v2 before 1.0.1.56, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.3.6, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.52, WN3100RPv2 before 1.0.0.42, 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 R7800, etc. are all products of NETGEAR. NETGEAR R7800 is a wireless router. NETGEAR D7800 is a wireless modem. NETGEAR EX2700 is a wireless network signal extender. 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 D7800 prior to 1.0.1.28, EX2700 prior to 1.0.1.32, EX6200v2 prior to 1.0.1.56, R7500v2 prior to 1.0.3.24, R7800 prior to 1.0.2.40, R9000 prior to 1.0.3.6, WN2000RPTv3 prior to 1.0.1.20, WN3000RPv3 prior to 1.0.2.52, WN3100RPv2 prior to 1.0.0.42, 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-2018-21181 // JVNDB: JVNDB-2018-016365 // CNVD: CNVD-2020-28241 // VULMON: CVE-2018-21181

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-28241

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.40	Trust: 1.6
vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.28	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.94	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.3.6	Trust: 1.6
vendor:	netgear	model:	ex2700	scope:	lt	version:	1.0.1.32	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.3.24	Trust: 1.0
vendor:	netgear	model:	ex6200	scope:	lt	version:	1.0.1.56	Trust: 1.0
vendor:	netgear	model:	wn3100rp	scope:	lt	version:	1.0.0.42	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:	wnr2000	scope:	lt	version:	1.0.0.62	Trust: 1.0
vendor:	netgear	model:	wn3000rp	scope:	lt	version:	1.0.2.52	Trust: 1.0
vendor:	netgear	model:	wn2000rpt	scope:	lt	version:	1.0.1.20	Trust: 1.0
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.92	Trust: 1.0
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.28	Trust: 0.8
vendor:	netgear	model:	ex2700	scope:	eq	version:	1.0.1.32	Trust: 0.8
vendor:	netgear	model:	ex6200	scope:	eq	version:	1.0.1.56	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:	1.0.3.6	Trust: 0.8
vendor:	netgear	model:	wn2000rpt	scope:	eq	version:	1.0.1.20	Trust: 0.8
vendor:	netgear	model:	wn3000rp	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	wn3100rp	scope:	eq	version:	1.0.0.42	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.92	Trust: 0.8
vendor:	netgear	model:	wnr2000v5	scope:	lt	version:	1.0.0.62	Trust: 0.6
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.24	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.92	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:	wn2000rptv3	scope:	lt	version:	1.0.1.20	Trust: 0.6
vendor:	netgear	model:	ex6200v2	scope:	lt	version:	1.0.1.56	Trust: 0.6
vendor:	netgear	model:	wn3000rpv3	scope:	lt	version:	1.0.2.52	Trust: 0.6
vendor:	netgear	model:	wn3100rpv2	scope:	lt	version:	1.0.0.42	Trust: 0.6

sources: CNVD: CNVD-2020-28241 // JVNDB: JVNDB-2018-016365 // NVD: CVE-2018-21181

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21181
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21181
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016365
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2020-28241
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2240
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21181
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21181
severity:	MEDIUM
baseScore:	6.5
vectorString:	AV:N/AC:L/AU:S/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.1
NVD:	JVNDB-2018-016365
severity:	MEDIUM
baseScore:	6.5
vectorString:	AV:N/AC:L/AU:S/C:P/I:P/A:P
accessVector:	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-2020-28241
severity:	MEDIUM
baseScore:	6.5
vectorString:	AV:N/AC:L/AU:S/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2018-21181
baseSeverity:	HIGH
baseScore:	7.2
vectorString:	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	HIGH
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	1.2
impactScore:	5.9
version:	3.1
Trust: 1.0
cve@mitre.org:	CVE-2018-21181
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-2018-016365
baseSeverity:	HIGH
baseScore:	7.2
vectorString:	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
attackVector:	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-2020-28241 // VULMON: CVE-2018-21181 // JVNDB: JVNDB-2018-016365 // CNNVD: CNNVD-202004-2240 // NVD: CVE-2018-21181 // NVD: CVE-2018-21181

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016365 // NVD: CVE-2018-21181

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202004-2240

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2240

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016365

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers, Gateways, and Extenders, PSV-2017-2618	url:	https://kb.netgear.com/000055177/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2618	Trust: 0.8
title:	Patch for Multiple NETGEAR product buffer overflow vulnerabilities (CNVD-2020-28241)	url:	https://www.cnvd.org.cn/patchInfo/show/217491	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117734	Trust: 0.6

sources: CNVD: CNVD-2020-28241 // JVNDB: JVNDB-2018-016365 // CNNVD: CNNVD-202004-2240

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21181	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016365	Trust: 0.8
db:	CNVD	id:	CNVD-2020-28241	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2240	Trust: 0.6
db:	VULMON	id:	CVE-2018-21181	Trust: 0.1

sources: CNVD: CNVD-2020-28241 // VULMON: CVE-2018-21181 // JVNDB: JVNDB-2018-016365 // CNNVD: CNNVD-202004-2240 // NVD: CVE-2018-21181

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21181	Trust: 2.0
url:	https://kb.netgear.com/000055177/security-advisory-for-post-authentication-stack-overflow-on-some-routers-gateways-and-extenders-psv-2017-2618	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21181	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-2020-28241 // VULMON: CVE-2018-21181 // JVNDB: JVNDB-2018-016365 // CNNVD: CNNVD-202004-2240 // NVD: CVE-2018-21181

SOURCES

db:	CNVD	id:	CNVD-2020-28241
db:	VULMON	id:	CVE-2018-21181
db:	JVNDB	id:	JVNDB-2018-016365
db:	CNNVD	id:	CNNVD-202004-2240
db:	NVD	id:	CVE-2018-21181

LAST UPDATE DATE

2024-11-23T22:05:39.936000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-28241	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21181	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016365	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2240	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21181	date:	2024-11-21T04:03:06.550

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-28241	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21181	date:	2020-04-28T00:00:00
db:	JVNDB	id:	JVNDB-2018-016365	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2240	date:	2020-04-28T00:00:00
db:	NVD	id:	CVE-2018-21181	date:	2020-04-28T13:15:12.480