Details of VAR-202004-1583

ID

VAR-202004-1583

CVE

CVE-2018-21147

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2018-016314

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.34, R7500v2 before 1.0.3.26, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR4300v2 before 1.0.0.54, and WNDR4500v3 before 1.0.0.54. 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 WNDR4300 is a wireless router. 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-2018-21147 // JVNDB: JVNDB-2018-016314 // CNVD: CNVD-2021-61052

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-61052

AFFECTED PRODUCTS

vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.34	Trust: 1.6
vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.42	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:	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:	r7500	scope:	lt	version:	1.0.3.26	Trust: 1.0
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.34	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.26	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:	wndr4300	scope:	eq	version:	1.0.0.54	Trust: 0.8
vendor:	netgear	model:	wndr4500	scope:	eq	version:	1.0.0.54	Trust: 0.8
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.26	Trust: 0.6
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

sources: CNVD: CNVD-2021-61052 // JVNDB: JVNDB-2018-016314 // NVD: CVE-2018-21147

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2018-21147
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2018-21147
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2018-016314
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2021-61052
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-1848
value:	MEDIUM
Trust: 0.6

nvd@nist.gov:	CVE-2018-21147
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: 1.0
NVD:	JVNDB-2018-016314
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-2021-61052
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-2018-21147
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-2018-21147
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-2018-016314
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-2021-61052 // JVNDB: JVNDB-2018-016314 // CNNVD: CNNVD-202004-1848 // NVD: CVE-2018-21147 // NVD: CVE-2018-21147

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2018-016314 // NVD: CVE-2018-21147

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-1848

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-1848

CONFIGURATIONS

sources: JVNDB: JVNDB-2018-016314

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Gateways and Routers, PSV-2017-3158	url:	https://kb.netgear.com/000059486/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Gateways-and-Routers-PSV-2017-3158	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-61052)	url:	https://www.cnvd.org.cn/patchInfo/show/284586	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=117219	Trust: 0.6

sources: CNVD: CNVD-2021-61052 // JVNDB: JVNDB-2018-016314 // CNNVD: CNNVD-202004-1848

EXTERNAL IDS

db:	NVD	id:	CVE-2018-21147	Trust: 3.0
db:	JVNDB	id:	JVNDB-2018-016314	Trust: 0.8
db:	CNVD	id:	CNVD-2021-61052	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-1848	Trust: 0.6

sources: CNVD: CNVD-2021-61052 // JVNDB: JVNDB-2018-016314 // CNNVD: CNNVD-202004-1848 // NVD: CVE-2018-21147

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2018-21147	Trust: 2.0
url:	https://kb.netgear.com/000059486/security-advisory-for-post-authentication-stack-overflow-on-some-gateways-and-routers-psv-2017-3158	Trust: 1.6
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2018-21147	Trust: 0.8

sources: CNVD: CNVD-2021-61052 // JVNDB: JVNDB-2018-016314 // CNNVD: CNNVD-202004-1848 // NVD: CVE-2018-21147

SOURCES

db:	CNVD	id:	CNVD-2021-61052
db:	JVNDB	id:	JVNDB-2018-016314
db:	CNNVD	id:	CNNVD-202004-1848
db:	NVD	id:	CVE-2018-21147

LAST UPDATE DATE

2024-11-23T21:59:20.184000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-61052	date:	2021-08-11T00:00:00
db:	JVNDB	id:	JVNDB-2018-016314	date:	2020-05-22T00:00:00
db:	CNNVD	id:	CNNVD-202004-1848	date:	2020-04-26T00:00:00
db:	NVD	id:	CVE-2018-21147	date:	2024-11-21T04:03:00.950

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-61052	date:	2021-08-08T00:00:00
db:	JVNDB	id:	JVNDB-2018-016314	date:	2020-05-22T00:00:00
db:	CNNVD	id:	CNNVD-202004-1848	date:	2020-04-21T00:00:00
db:	NVD	id:	CVE-2018-21147	date:	2020-04-21T22:15:14.307