Details of VAR-202004-1689

ID

VAR-202004-1689

CVE

CVE-2018-21178

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016387

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R7800 before 1.0.2.40, R9000 before 1.0.2.52, 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 R9000 is a wireless router of NETGEAR. 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 R7800 prior to 1.0.2.40, R9000 prior to 1.0.2.52, 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-2018-21178 // JVNDB: JVNDB-2018-016387 // CNVD: CNVD-2020-28117 // VULMON: CVE-2018-21178

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-28117

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:	wndr4300	scope:	lt	version:	1.0.2.94	Trust: 1.6
vendor:	netgear	model:	wndr4500	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:	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:	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:	v4 1.0.2.92	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.2.94	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	v2 1.0.0.50	Trust: 0.8
vendor:	netgear	model:	wndr4500	scope:	eq	version:	v3 1.0.0.50	Trust: 0.8
vendor:	netgear	model:	wnr2000	scope:	eq	version:	v5 1.0.0.62	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:	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:	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:	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:	1.0.0.54	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:	wndr4300	scope:	eq	version:	1.0.2.92	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-2020-28117 // VULMON: CVE-2018-21178 // JVNDB: JVNDB-2018-016387 // NVD: CVE-2018-21178

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21178
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2018-21178
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016387
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2020-28117
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2221
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2018-21178
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21178
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-2018-016387
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-2020-28117
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-2018-21178
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-2018-21178
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-2018-016387
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-2020-28117 // VULMON: CVE-2018-21178 // JVNDB: JVNDB-2018-016387 // CNNVD: CNNVD-202004-2221 // NVD: CVE-2018-21178 // NVD: CVE-2018-21178

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016387 // NVD: CVE-2018-21178

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2221

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2221

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016387

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers, PSV-2017-2621	url:	https://kb.netgear.com/000055180/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2621	Trust: 0.8
title:	Patch for Multiple NETGEAR product buffer overflow vulnerabilities (CNVD-2020-28117)	url:	https://www.cnvd.org.cn/patchInfo/show/217407	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117313	Trust: 0.6

sources: CNVD: CNVD-2020-28117 // JVNDB: JVNDB-2018-016387 // CNNVD: CNNVD-202004-2221

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21178	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016387	Trust: 0.8
db:	CNVD	id:	CNVD-2020-28117	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2221	Trust: 0.6
db:	VULMON	id:	CVE-2018-21178	Trust: 0.1

sources: CNVD: CNVD-2020-28117 // VULMON: CVE-2018-21178 // JVNDB: JVNDB-2018-016387 // CNNVD: CNNVD-202004-2221 // NVD: CVE-2018-21178

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21178	Trust: 2.0
url:	https://kb.netgear.com/000055180/security-advisory-for-post-authentication-stack-overflow-on-some-routers-psv-2017-2621	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21178	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-2020-28117 // VULMON: CVE-2018-21178 // JVNDB: JVNDB-2018-016387 // CNNVD: CNNVD-202004-2221 // NVD: CVE-2018-21178

SOURCES

db:	CNVD	id:	CNVD-2020-28117
db:	VULMON	id:	CVE-2018-21178
db:	JVNDB	id:	JVNDB-2018-016387
db:	CNNVD	id:	CNNVD-202004-2221
db:	NVD	id:	CVE-2018-21178

LAST UPDATE DATE

2024-11-23T22:21:12.394000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-28117	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21178	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016387	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2221	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21178	date:	2024-11-21T04:03:06.087

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-28117	date:	2020-05-14T00:00:00
db:	VULMON	id:	CVE-2018-21178	date:	2020-04-27T00:00:00
db:	JVNDB	id:	JVNDB-2018-016387	date:	2020-06-01T00:00:00
db:	CNNVD	id:	CNNVD-202004-2221	date:	2020-04-27T00:00:00
db:	NVD	id:	CVE-2018-21178	date:	2020-04-27T21:15:13.093