Details of VAR-202004-0793

ID

VAR-202004-0793

CVE

CVE-2019-20747

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2019-015456

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D6100 before 1.0.0.58, D7800 before 1.0.1.40, R7500v2 before 1.0.3.34, R7800 before 1.0.2.52, R8900 before 1.0.4.2, R9000 before 1.0.3.16, RAX120 before 1.0.0.74, RBK20 before 2.3.0.22, RBR20 before 2.3.0.22, RBS20 before 2.3.0.22, RBK50 before 2.3.0.22, RBR50 before 2.3.0.22, RBS50 before 2.3.0.22, RBK40 before 2.3.0.22, RBS40 before 2.3.0.22, SRK60 before 2.2.0.64, SRR60 before 2.2.0.64, SRS60 before 2.2.0.64, WNDR3700v4 before 1.0.2.102, WNDR4300 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, and WNR2000v5 before 1.0.0.66. 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 R8900, 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, it does not correctly verify the data boundary, 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-2019-20747 // JVNDB: JVNDB-2019-015456 // CNVD: CNVD-2021-63773

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2021-63773

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.52	Trust: 1.6
vendor:	netgear	model:	r8900	scope:	lt	version:	1.0.4.2	Trust: 1.6
vendor:	netgear	model:	r9000	scope:	lt	version:	1.0.3.16	Trust: 1.6
vendor:	netgear	model:	rbk20	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbr20	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbs20	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbk50	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbr50	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbs50	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	rbs40	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	wndr4300	scope:	lt	version:	1.0.2.104	Trust: 1.6
vendor:	netgear	model:	d6100	scope:	lt	version:	1.0.0.58	Trust: 1.6
vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.40	Trust: 1.6
vendor:	netgear	model:	rax120	scope:	lt	version:	1.0.0.74	Trust: 1.6
vendor:	netgear	model:	rbk40	scope:	lt	version:	2.3.0.22	Trust: 1.6
vendor:	netgear	model:	srk60	scope:	lt	version:	2.2.0.64	Trust: 1.6
vendor:	netgear	model:	srr60	scope:	lt	version:	2.2.0.64	Trust: 1.6
vendor:	netgear	model:	srs60	scope:	lt	version:	2.2.0.64	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.3.34	Trust: 1.0
vendor:	netgear	model:	wndr4500	scope:	lt	version:	1.0.0.56	Trust: 1.0
vendor:	netgear	model:	wnr2000	scope:	lt	version:	1.0.0.66	Trust: 1.0
vendor:	netgear	model:	wndr4300	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:	d6100	scope:	eq	version:	1.0.0.58	Trust: 0.8
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.40	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.34	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	r8900	scope:	eq	version:	1.0.4.2	Trust: 0.8
vendor:	netgear	model:	r9000	scope:	eq	version:	1.0.3.16	Trust: 0.8
vendor:	netgear	model:	rax120	scope:	eq	version:	1.0.0.74	Trust: 0.8
vendor:	netgear	model:	rbk20	scope:	eq	version:	2.3.0.22	Trust: 0.8
vendor:	netgear	model:	rbr20	scope:	eq	version:	2.3.0.22	Trust: 0.8
vendor:	netgear	model:	rbs20	scope:	eq	version:	2.3.0.22	Trust: 0.8
vendor:	netgear	model:	wndr3700v4	scope:	lt	version:	1.0.2.102	Trust: 0.6
vendor:	netgear	model:	wnr2000v5	scope:	lt	version:	1.0.0.66	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:	r7500v2	scope:	lt	version:	1.0.3.34	Trust: 0.6

sources: CNVD: CNVD-2021-63773 // JVNDB: JVNDB-2019-015456 // NVD: CVE-2019-20747

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-20747
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2019-20747
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2019-015456
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2021-63773
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-1358
value:	MEDIUM
Trust: 0.6

nvd@nist.gov:	CVE-2019-20747
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-2019-015456
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-2021-63773
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-2019-20747
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-2019-20747
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-2019-015456
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-2021-63773 // JVNDB: JVNDB-2019-015456 // CNNVD: CNNVD-202004-1358 // NVD: CVE-2019-20747 // NVD: CVE-2019-20747

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2019-015456 // NVD: CVE-2019-20747

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-1358

CONFIGURATIONS

sources: JVNDB: JVNDB-2019-015456

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers, Gateways, and WiFi Systems, PSV-2018-0032	url:	https://kb.netgear.com/000060962/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-PSV-2018-0032	Trust: 0.8
title:	Patch for Buffer overflow vulnerabilities in multiple NETGEAR products (CNVD-2021-63773)	url:	https://www.cnvd.org.cn/patchInfo/show/287186	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=114946	Trust: 0.6

sources: CNVD: CNVD-2021-63773 // JVNDB: JVNDB-2019-015456 // CNNVD: CNNVD-202004-1358

EXTERNAL IDS

db:	NVD	id:	CVE-2019-20747	Trust: 3.0
db:	JVNDB	id:	JVNDB-2019-015456	Trust: 0.8
db:	CNVD	id:	CNVD-2021-63773	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-1358	Trust: 0.6

sources: CNVD: CNVD-2021-63773 // JVNDB: JVNDB-2019-015456 // CNNVD: CNNVD-202004-1358 // NVD: CVE-2019-20747

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2019-20747	Trust: 2.0
url:	https://kb.netgear.com/000060962/security-advisory-for-post-authentication-stack-overflow-on-some-routers-gateways-and-wifi-systems-psv-2018-0032	Trust: 1.6
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-20747	Trust: 0.8

sources: CNVD: CNVD-2021-63773 // JVNDB: JVNDB-2019-015456 // CNNVD: CNNVD-202004-1358 // NVD: CVE-2019-20747

SOURCES

db:	CNVD	id:	CNVD-2021-63773
db:	JVNDB	id:	JVNDB-2019-015456
db:	CNNVD	id:	CNNVD-202004-1358
db:	NVD	id:	CVE-2019-20747

LAST UPDATE DATE

2024-11-23T22:33:29.094000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2021-63773	date:	2021-08-21T00:00:00
db:	JVNDB	id:	JVNDB-2019-015456	date:	2020-05-20T00:00:00
db:	CNNVD	id:	CNNVD-202004-1358	date:	2020-04-17T00:00:00
db:	NVD	id:	CVE-2019-20747	date:	2024-11-21T04:39:15.360

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2021-63773	date:	2021-08-19T00:00:00
db:	JVNDB	id:	JVNDB-2019-015456	date:	2020-05-20T00:00:00
db:	CNNVD	id:	CNNVD-202004-1358	date:	2020-04-16T00:00:00
db:	NVD	id:	CVE-2019-20747	date:	2020-04-16T21:15:12.817