Details of VAR-202004-1571

ID

VAR-202004-1571

CVE

CVE-2018-21135

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016412

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6700 before 1.0.1.48, R7500 before 1.0.0.124, R7800 before 1.0.2.58, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, and WNR2000v5-R2000 before 1.0.0.68. 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 wireless routers from NETGEAR. 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. This affects R6700 prior to 1.0.1.48, R7500 prior to 1.0.0.124, R7800 prior to 1.0.2.58, R8900 prior to 1.0.4.2, R9000 prior to 1.0.4.2, WNDR3700v4 prior to 1.0.2.102, WNDR4300v1 prior to 1.0.2.104, WNDR4300v2 prior to 1.0.0.56, WNDR4500v3 prior to 1.0.0.56, and WNR2000v5-R2000 prior to 1.0.0.68

Trust: 2.25

sources: NVD: CVE-2018-21135 // JVNDB: JVNDB-2018-016412 // CNVD: CNVD-2021-50926 // VULMON: CVE-2018-21135

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-50926

AFFECTED PRODUCTS

vendor:	netgear	model:	r8900	scope:	lt	version:	1.0.4.2	Trust: 1.6
vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.58	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.4.2	Trust: 1.6
vendor:	netgear	model:	r6700	scope:	lt	version:	1.0.1.48	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.0.124	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.104	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.56	Trust: 1.0
vendor:	netgear	model:	wnr2000	scope:	lt	version:	1.0.0.68	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.56	Trust: 1.0
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.102	Trust: 1.0
vendor:	netgear	model:	r6700	scope:	eq	version:	1.0.1.48	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.124	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.58	Trust: 0.8
vendor:	netgear	model:	r8900	scope:	eq	version:	1.0.4.2	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.4.2	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	v4 1.0.2.102	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	v1 1.0.2.104	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	v2 1.0.0.56	Trust: 0.8
vendor:	netgear	model:	wndr4500	scope:	eq	version:	v3 1.0.0.56	Trust: 0.8
vendor:	netgear	model:	wnr2000	scope:	eq	version:	v5-r2000 1.0.0.68	Trust: 0.8
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.102	Trust: 0.6
vendor:	netgear	model:	wndr4300v2	scope:	lt	version:	1.0.0.56	Trust: 0.6
vendor:	netgear	model:	wndr4500v3	scope:	lt	version:	1.0.0.56	Trust: 0.6
vendor:	netgear	model:	wndr4300v1	scope:	lt	version:	1.0.2.104	Trust: 0.6
vendor:	netgear	model:	wnr2000v5-r2000	scope:	lt	version:	1.0.0.68	Trust: 0.6

sources: CNVD: CNVD-2021-50926 // JVNDB: JVNDB-2018-016412 // NVD: CVE-2018-21135

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21135
value:	HIGH
Trust: 1.0
cve@mitre.org:	CVE-2018-21135
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016412
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2021-50926
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2029
value:	HIGH
Trust: 0.6
VULMON:	CVE-2018-21135
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21135
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-2018-016412
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-2021-50926
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-2018-21135
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-2018-21135
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-2018-016412
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-2021-50926 // VULMON: CVE-2018-21135 // JVNDB: JVNDB-2018-016412 // CNNVD: CNNVD-202004-2029 // NVD: CVE-2018-21135 // NVD: CVE-2018-21135

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016412 // NVD: CVE-2018-21135

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202004-2029

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2029

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016412

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers, PSV-2017-3165	url:	https://kb.netgear.com/000060225/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-3165	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-50926)	url:	https://www.cnvd.org.cn/patchInfo/show/279091	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=116784	Trust: 0.6

sources: CNVD: CNVD-2021-50926 // JVNDB: JVNDB-2018-016412 // CNNVD: CNNVD-202004-2029

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21135	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016412	Trust: 0.8
db:	CNVD	id:	CNVD-2021-50926	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2029	Trust: 0.6
db:	VULMON	id:	CVE-2018-21135	Trust: 0.1

sources: CNVD: CNVD-2021-50926 // VULMON: CVE-2018-21135 // JVNDB: JVNDB-2018-016412 // CNNVD: CNNVD-202004-2029 // NVD: CVE-2018-21135

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21135	Trust: 2.0
url:	https://kb.netgear.com/000060225/security-advisory-for-post-authentication-stack-overflow-on-some-routers-psv-2017-3165	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21135	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-2021-50926 // VULMON: CVE-2018-21135 // JVNDB: JVNDB-2018-016412 // CNNVD: CNNVD-202004-2029 // NVD: CVE-2018-21135

SOURCES

db:	CNVD	id:	CNVD-2021-50926
db:	VULMON	id:	CVE-2018-21135
db:	JVNDB	id:	JVNDB-2018-016412
db:	CNNVD	id:	CNNVD-202004-2029
db:	NVD	id:	CVE-2018-21135

LAST UPDATE DATE

2024-11-23T22:25:32.381000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-50926	date:	2021-07-15T00:00:00
db:	VULMON	id:	CVE-2018-21135	date:	2020-05-01T00:00:00
db:	JVNDB	id:	JVNDB-2018-016412	date:	2020-06-03T00:00:00
db:	CNNVD	id:	CNNVD-202004-2029	date:	2020-05-06T00:00:00
db:	NVD	id:	CVE-2018-21135	date:	2024-11-21T04:02:59.120

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-50926	date:	2021-07-14T00:00:00
db:	VULMON	id:	CVE-2018-21135	date:	2020-04-23T00:00:00
db:	JVNDB	id:	JVNDB-2018-016412	date:	2020-06-03T00:00:00
db:	CNNVD	id:	CNNVD-202004-2029	date:	2020-04-23T00:00:00
db:	NVD	id:	CVE-2018-21135	date:	2020-04-23T21:15:11.453