Details of VAR-202004-1585

ID

VAR-202004-1585

CVE

CVE-2018-21149

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016399

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.34, DM200 before 1.0.0.50, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.0.54, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64. 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 D7800, etc. are all products of NETGEAR. NETGEAR D7800 is a wireless modem. NETGEAR R7500 is a wireless router. NETGEAR DM200 is a wireless modem. 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 D7800 prior to 1.0.1.34, DM200 prior to 1.0.0.50, R6100 prior to 1.0.1.22, R7500 prior to 1.0.0.122, R7800 prior to 1.0.2.42, R8900 prior to 1.0.3.10, R9000 prior to 1.0.3.10, WNDR3700v4 prior to 1.0.2.96, WNDR4300 prior to 1.0.0.54, WNDR4300v2 prior to 1.0.0.54, WNDR4500v3 prior to 1.0.0.54, and WNR2000v5 prior to 1.0.0.64

Trust: 2.25

sources: NVD: CVE-2018-21149 // JVNDB: JVNDB-2018-016399 // CNVD: CNVD-2021-48933 // VULMON: CVE-2018-21149

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-48933

AFFECTED PRODUCTS

vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.0.122	Trust: 1.6
vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.34	Trust: 1.6
vendor:	netgear	model:	r6100	scope:	lt	version:	1.0.1.22	Trust: 1.6
vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.42	Trust: 1.6
vendor:	netgear	model:	dm200	scope:	lt	version:	1.0.0.50	Trust: 1.6
vendor:	netgear	model:	r8900	scope:	lt	version:	1.0.3.10	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.3.10	Trust: 1.6
vendor:	netgear	model:	wndr3700	scope:	lt	version:	1.0.2.96	Trust: 1.0
vendor:	netgear	model:	wnr2000	scope:	lt	version:	1.0.0.64	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.54	Trust: 1.0
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.0.54	Trust: 1.0
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.34	Trust: 0.8
vendor:	netgear	model:	dm200	scope:	eq	version:	1.0.0.50	Trust: 0.8
vendor:	netgear	model:	r6100	scope:	eq	version:	1.0.1.22	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.0.122	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.42	Trust: 0.8
vendor:	netgear	model:	r8900	scope:	eq	version:	1.0.3.10	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.3.10	Trust: 0.8
vendor:	netgear	model:	wndr3700	scope:	eq	version:	1.0.2.96	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	1.0.0.54	Trust: 0.8
vendor:	netgear	model:	wndr4300	scope:	eq	version:	v2 1.0.0.54	Trust: 0.8
vendor:	netgear	model:	wndr4300v2	scope:	lt	version:	1.0.0.54	Trust: 0.6
vendor:	netgear	model:	wndr4500v3	scope:	lt	version:	1.0.0.54	Trust: 0.6
vendor:	netgear	model:	wnr2000v5	scope:	lt	version:	1.0.0.64	Trust: 0.6
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.96	Trust: 0.6

sources: CNVD: CNVD-2021-48933 // JVNDB: JVNDB-2018-016399 // NVD: CVE-2018-21149

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21149
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2018-21149
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016399
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2021-48933
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-2202
value:	MEDIUM
Trust: 0.6
VULMON:	CVE-2018-21149
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2018-21149
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-2018-016399
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-2021-48933
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-2018-21149
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-2018-21149
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-2018-016399
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-2021-48933 // VULMON: CVE-2018-21149 // JVNDB: JVNDB-2018-016399 // CNNVD: CNNVD-202004-2202 // NVD: CVE-2018-21149 // NVD: CVE-2018-21149

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016399 // NVD: CVE-2018-21149

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-2202

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-2202

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016399

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Gateways and Routers, PSV-2017-3156	url:	https://kb.netgear.com/000059484/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Gateways-and-Routers-PSV-2017-3156	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-48933)	url:	https://www.cnvd.org.cn/patchInfo/show/277386	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117297	Trust: 0.6

sources: CNVD: CNVD-2021-48933 // JVNDB: JVNDB-2018-016399 // CNNVD: CNNVD-202004-2202

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21149	Trust: 3.1
db:	JVNDB	id:	JVNDB-2018-016399	Trust: 0.8
db:	CNVD	id:	CNVD-2021-48933	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-2202	Trust: 0.6
db:	VULMON	id:	CVE-2018-21149	Trust: 0.1

sources: CNVD: CNVD-2021-48933 // VULMON: CVE-2018-21149 // JVNDB: JVNDB-2018-016399 // CNNVD: CNNVD-202004-2202 // NVD: CVE-2018-21149

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21149	Trust: 2.0
url:	https://kb.netgear.com/000059484/security-advisory-for-post-authentication-stack-overflow-on-some-gateways-and-routers-psv-2017-3156	Trust: 1.7
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21149	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-2021-48933 // VULMON: CVE-2018-21149 // JVNDB: JVNDB-2018-016399 // CNNVD: CNNVD-202004-2202 // NVD: CVE-2018-21149

SOURCES

db:	CNVD	id:	CNVD-2021-48933
db:	VULMON	id:	CVE-2018-21149
db:	JVNDB	id:	JVNDB-2018-016399
db:	CNNVD	id:	CNNVD-202004-2202
db:	NVD	id:	CVE-2018-21149

LAST UPDATE DATE

2024-11-23T22:41:06.490000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-48933	date:	2021-07-09T00:00:00
db:	VULMON	id:	CVE-2018-21149	date:	2020-05-06T00:00:00
db:	JVNDB	id:	JVNDB-2018-016399	date:	2020-06-02T00:00:00
db:	CNNVD	id:	CNNVD-202004-2202	date:	2020-05-07T00:00:00
db:	NVD	id:	CVE-2018-21149	date:	2024-11-21T04:03:01.247

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-48933	date:	2020-07-08T00:00:00
db:	VULMON	id:	CVE-2018-21149	date:	2020-04-27T00:00:00
db:	JVNDB	id:	JVNDB-2018-016399	date:	2020-06-02T00:00:00
db:	CNNVD	id:	CNNVD-202004-2202	date:	2020-04-27T00:00:00
db:	NVD	id:	CVE-2018-21149	date:	2020-04-27T18:15:12.107