Details of VAR-202004-1570

ID

VAR-202004-1570

CVE

CVE-2018-21134

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016411

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 before 1.0.2.16, R6900 before 1.0.1.48, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R6250 before 1.0.4.30, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.60, R7000 before 1.0.9.34, R7100LG before 1.0.0.48, R7300 before 1.0.0.68, R8000 before 1.0.4.18, R8000P before 1.4.1.24, R7900P before 1.4.1.24, R8500 before 1.0.2.122, R8300 before 1.0.2.122, WN2500RPv2 before 1.0.1.54, EX3700 before 1.0.0.72, EX3800 before 1.0.0.72, EX6000 before 1.0.0.32, EX6100 before 1.0.2.24, EX6120 before 1.0.0.42, EX6130 before 1.0.0.24, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, D7000v2 before 1.0.0.51, D6220 before 1.0.0.46, D6400 before 1.0.0.82, and D8500 before 1.0.3.42. 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 R6700, etc. are all products of NETGEAR. NETGEAR R6700 is a wireless router. NETGEAR R7900 is a wireless router. NETGEAR EX3700 is a wireless network signal extender. 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

Trust: 2.16

sources: NVD: CVE-2018-21134 // JVNDB: JVNDB-2018-016411 // CNVD: CNVD-2021-50925

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-50925

AFFECTED PRODUCTS

vendor:	netgear	model:	r6700	scope:	lt	version:	1.0.1.48	Trust: 1.6
vendor:	netgear	model:	r7900	scope:	lt	version:	1.0.2.16	Trust: 1.6
vendor:	netgear	model:	r6900	scope:	lt	version:	1.0.1.48	Trust: 1.6
vendor:	netgear	model:	r7000p	scope:	lt	version:	1.3.1.44	Trust: 1.6
vendor:	netgear	model:	r6900p	scope:	lt	version:	1.3.1.44	Trust: 1.6
vendor:	netgear	model:	r6250	scope:	lt	version:	1.0.4.30	Trust: 1.6
vendor:	netgear	model:	r6400	scope:	lt	version:	1.0.1.44	Trust: 1.6
vendor:	netgear	model:	r7000	scope:	lt	version:	1.0.9.34	Trust: 1.6
vendor:	netgear	model:	r7100lg	scope:	lt	version:	1.0.0.48	Trust: 1.6
vendor:	netgear	model:	r7300	scope:	lt	version:	1.0.0.68	Trust: 1.6
vendor:	netgear	model:	r8000	scope:	lt	version:	1.0.4.18	Trust: 1.6
vendor:	netgear	model:	r8000p	scope:	lt	version:	1.4.1.24	Trust: 1.6
vendor:	netgear	model:	r7900p	scope:	lt	version:	1.4.1.24	Trust: 1.6
vendor:	netgear	model:	r8500	scope:	lt	version:	1.0.2.122	Trust: 1.6
vendor:	netgear	model:	r8300	scope:	lt	version:	1.0.2.122	Trust: 1.6
vendor:	netgear	model:	ex3700	scope:	lt	version:	1.0.0.72	Trust: 1.6
vendor:	netgear	model:	ex3800	scope:	lt	version:	1.0.0.72	Trust: 1.6
vendor:	netgear	model:	ex6000	scope:	lt	version:	1.0.0.32	Trust: 1.6
vendor:	netgear	model:	ex6100	scope:	lt	version:	1.0.2.24	Trust: 1.6
vendor:	netgear	model:	ex6120	scope:	lt	version:	1.0.0.42	Trust: 1.6
vendor:	netgear	model:	ex6130	scope:	lt	version:	1.0.0.24	Trust: 1.6
vendor:	netgear	model:	ex6200	scope:	lt	version:	1.0.3.88	Trust: 1.6
vendor:	netgear	model:	ex7000	scope:	lt	version:	1.0.0.66	Trust: 1.6
vendor:	netgear	model:	d6220	scope:	lt	version:	1.0.0.46	Trust: 1.6
vendor:	netgear	model:	d6400	scope:	lt	version:	1.0.0.82	Trust: 1.6
vendor:	netgear	model:	d8500	scope:	lt	version:	1.0.3.42	Trust: 1.6
vendor:	netgear	model:	d7000	scope:	lt	version:	1.0.0.51	Trust: 1.0
vendor:	netgear	model:	r6300	scope:	lt	version:	1.0.4.32	Trust: 1.0
vendor:	netgear	model:	ex6150	scope:	lt	version:	1.0.0.42	Trust: 1.0
vendor:	netgear	model:	wn2500rp	scope:	lt	version:	1.0.1.54	Trust: 1.0
vendor:	netgear	model:	r6400	scope:	lt	version:	1.0.2.60	Trust: 1.0
vendor:	netgear	model:	r6250	scope:	eq	version:	1.0.4.30	Trust: 0.8
vendor:	netgear	model:	r6300	scope:	eq	version:	v2 1.0.4.32	Trust: 0.8
vendor:	netgear	model:	r6400	scope:	eq	version:	1.0.1.44	Trust: 0.8
vendor:	netgear	model:	r6400	scope:	eq	version:	v2 1.0.2.60	Trust: 0.8
vendor:	netgear	model:	r6700	scope:	eq	version:	1.0.1.48	Trust: 0.8
vendor:	netgear	model:	r6900	scope:	eq	version:	1.0.1.48	Trust: 0.8
vendor:	netgear	model:	r6900p	scope:	eq	version:	1.3.1.44	Trust: 0.8
vendor:	netgear	model:	r7000	scope:	eq	version:	1.0.9.34	Trust: 0.8
vendor:	netgear	model:	r7000p	scope:	eq	version:	1.3.1.44	Trust: 0.8
vendor:	netgear	model:	r7900	scope:	eq	version:	1.0.2.16	Trust: 0.8
vendor:	netgear	model:	r6300v2	scope:	lt	version:	1.0.4.32	Trust: 0.6
vendor:	netgear	model:	r6400v2	scope:	lt	version:	1.0.2.60	Trust: 0.6
vendor:	netgear	model:	wn2500rpv2	scope:	lt	version:	1.0.1.54	Trust: 0.6
vendor:	netgear	model:	ex6150v1	scope:	lt	version:	1.0.0.42	Trust: 0.6
vendor:	netgear	model:	d7000v2	scope:	lt	version:	1.0.0.51	Trust: 0.6

sources: CNVD: CNVD-2021-50925 // JVNDB: JVNDB-2018-016411 // NVD: CVE-2018-21134

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21134
value:	CRITICAL
Trust: 1.0
cve@mitre.org:	CVE-2018-21134
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016411
value:	CRITICAL
Trust: 0.8
CNVD:	CNVD-2021-50925
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202004-2025
value:	CRITICAL
Trust: 0.6

nvd@nist.gov:	CVE-2018-21134
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.0
NVD:	JVNDB-2018-016411
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	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-2021-50925
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2018-21134
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 1.0
cve@mitre.org:	CVE-2018-21134
baseSeverity:	MEDIUM
baseScore:	6.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	LOW
availabilityImpact:	LOW
exploitabilityScore:	2.1
impactScore:	4.7
version:	3.0
Trust: 1.0
NVD:	JVNDB-2018-016411
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	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-2021-50925 // JVNDB: JVNDB-2018-016411 // CNNVD: CNNVD-202004-2025 // NVD: CVE-2018-21134 // NVD: CVE-2018-21134

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016411 // NVD: CVE-2018-21134

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202004-2025

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2025

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016411

PATCH

title:	Security Advisory for Pre-Authentication Stack Overflow on Some Routers and Wireless Extenders, PSV-2017-2019	url:	https://kb.netgear.com/000060226/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Wireless-Extenders-PSV-2017-2019	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-50925)	url:	https://www.cnvd.org.cn/patchInfo/show/279116	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=116781	Trust: 0.6

sources: CNVD: CNVD-2021-50925 // JVNDB: JVNDB-2018-016411 // CNNVD: CNNVD-202004-2025

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21134	Trust: 3.0
db:	JVNDB	id:	JVNDB-2018-016411	Trust: 0.8
db:	CNVD	id:	CNVD-2021-50925	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2025	Trust: 0.6

sources: CNVD: CNVD-2021-50925 // JVNDB: JVNDB-2018-016411 // CNNVD: CNNVD-202004-2025 // NVD: CVE-2018-21134

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21134	Trust: 2.0
url:	https://kb.netgear.com/000060226/security-advisory-for-pre-authentication-stack-overflow-on-some-routers-and-wireless-extenders-psv-2017-2019	Trust: 1.6
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21134	Trust: 0.8

sources: CNVD: CNVD-2021-50925 // JVNDB: JVNDB-2018-016411 // CNNVD: CNNVD-202004-2025 // NVD: CVE-2018-21134

SOURCES

db:	CNVD	id:	CNVD-2021-50925
db:	JVNDB	id:	JVNDB-2018-016411
db:	CNNVD	id:	CNNVD-202004-2025
db:	NVD	id:	CVE-2018-21134

LAST UPDATE DATE

2024-11-23T22:33:27.982000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-50925	date:	2021-07-15T00:00:00
db:	JVNDB	id:	JVNDB-2018-016411	date:	2020-06-03T00:00:00
db:	CNNVD	id:	CNNVD-202004-2025	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21134	date:	2024-11-21T04:02:58.950

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-50925	date:	2020-07-15T00:00:00
db:	JVNDB	id:	JVNDB-2018-016411	date:	2020-06-03T00:00:00
db:	CNNVD	id:	CNNVD-202004-2025	date:	2020-04-23T00:00:00
db:	NVD	id:	CVE-2018-21134	date:	2020-04-23T20:15:12.943