Details of VAR-202004-0794

ID

VAR-202004-0794

CVE

CVE-2019-20748

TITLE

plural NETGEAR Out-of-bounds write vulnerabilities in devices

Trust: 0.8

sources: JVNDB: JVNDB-2019-015369

DESCRIPTION

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.44, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, and RBS50 before 2.3.0.32. 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 RBK20 is a wireless router. The vulnerability stems from the fact that the network system or product performs an operation on the memory, and the data boundary is not correctly verified, resulting in an incorrect read and write operation to other associated memory locations. The attacker The vulnerability can be exploited to cause buffer overflow or heap overflow

Trust: 2.16

sources: NVD: CVE-2019-20748 // JVNDB: JVNDB-2019-015369 // CNVD: CNVD-2020-27300

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2020-27300

AFFECTED PRODUCTS

vendor:	netgear	model:	r7800	scope:	lt	version:	1.0.2.52	Trust: 1.6
vendor:	netgear	model:	d7800	scope:	lt	version:	1.0.1.44	Trust: 1.6
vendor:	netgear	model:	rbk20	scope:	lt	version:	2.3.0.28	Trust: 1.6
vendor:	netgear	model:	rbr20	scope:	lt	version:	2.3.0.28	Trust: 1.6
vendor:	netgear	model:	rbs20	scope:	lt	version:	2.3.0.28	Trust: 1.6
vendor:	netgear	model:	rbk40	scope:	lt	version:	2.3.0.28	Trust: 1.6
vendor:	netgear	model:	rbs40	scope:	lt	version:	2.3.0.28	Trust: 1.6
vendor:	netgear	model:	rbk50	scope:	lt	version:	2.3.0.32	Trust: 1.6
vendor:	netgear	model:	rbr50	scope:	lt	version:	2.3.0.32	Trust: 1.6
vendor:	netgear	model:	rbs50	scope:	lt	version:	2.3.0.32	Trust: 1.6
vendor:	netgear	model:	r7500	scope:	lt	version:	1.0.3.38	Trust: 1.0
vendor:	netgear	model:	d7800	scope:	eq	version:	1.0.1.44	Trust: 0.8
vendor:	netgear	model:	r7500	scope:	eq	version:	1.0.3.38	Trust: 0.8
vendor:	netgear	model:	r7800	scope:	eq	version:	1.0.2.52	Trust: 0.8
vendor:	netgear	model:	rbk20	scope:	eq	version:	2.3.0.28	Trust: 0.8
vendor:	netgear	model:	rbk40	scope:	eq	version:	2.3.0.28	Trust: 0.8
vendor:	netgear	model:	rbk50	scope:	eq	version:	2.3.0.32	Trust: 0.8
vendor:	netgear	model:	rbr20	scope:	eq	version:	2.3.0.28	Trust: 0.8
vendor:	netgear	model:	rbr50	scope:	eq	version:	2.3.0.32	Trust: 0.8
vendor:	netgear	model:	rbs20	scope:	eq	version:	2.3.0.28	Trust: 0.8
vendor:	netgear	model:	rbs40	scope:	eq	version:	2.3.0.28	Trust: 0.8
vendor:	netgear	model:	r7500v2	scope:	lt	version:	1.0.3.38	Trust: 0.6

sources: CNVD: CNVD-2020-27300 // JVNDB: JVNDB-2019-015369 // NVD: CVE-2019-20748

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-20748
value:	MEDIUM
Trust: 1.0
cve@mitre.org:	CVE-2019-20748
value:	MEDIUM
Trust: 1.0
NVD:	JVNDB-2019-015369
value:	MEDIUM
Trust: 0.8
CNVD:	CNVD-2020-27300
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-1359
value:	MEDIUM
Trust: 0.6

nvd@nist.gov:	CVE-2019-20748
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-2019-015369
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-2020-27300
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-2019-20748
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-2019-20748
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-2019-015369
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-2020-27300 // JVNDB: JVNDB-2019-015369 // CNNVD: CNNVD-202004-1359 // NVD: CVE-2019-20748 // NVD: CVE-2019-20748

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2019-015369 // NVD: CVE-2019-20748

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-1359

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-1359

CONFIGURATIONS

sources: JVNDB: JVNDB-2019-015369

PATCH

title:	Security Advisory for Post-Authentication Stack Overflow on Some Routers, Gateways, and WiFi Systems, PSV-2018-0147	url:	https://kb.netgear.com/000060963/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-PSV-2018-0147	Trust: 0.8
title:	Patch for Multiple NETGEAR product buffer overflow vulnerabilities (CNVD-2020-27300)	url:	https://www.cnvd.org.cn/patchInfo/show/216927	Trust: 0.6
title:	Multiple NETGEAR Product Buffer Error Vulnerability Fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=116595	Trust: 0.6

sources: CNVD: CNVD-2020-27300 // JVNDB: JVNDB-2019-015369 // CNNVD: CNNVD-202004-1359

EXTERNAL IDS

db:	NVD	id:	CVE-2019-20748	Trust: 3.0
db:	JVNDB	id:	JVNDB-2019-015369	Trust: 0.8
db:	CNVD	id:	CNVD-2020-27300	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-1359	Trust: 0.6

sources: CNVD: CNVD-2020-27300 // JVNDB: JVNDB-2019-015369 // CNNVD: CNNVD-202004-1359 // NVD: CVE-2019-20748

REFERENCES

url:	https://nvd.nist.gov/vuln/detail/cve-2019-20748	Trust: 2.0
url:	https://kb.netgear.com/000060963/security-advisory-for-post-authentication-stack-overflow-on-some-routers-gateways-and-wifi-systems-psv-2018-0147	Trust: 1.6
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-20748	Trust: 0.8

sources: CNVD: CNVD-2020-27300 // JVNDB: JVNDB-2019-015369 // CNNVD: CNNVD-202004-1359 // NVD: CVE-2019-20748

SOURCES

db:	CNVD	id:	CNVD-2020-27300
db:	JVNDB	id:	JVNDB-2019-015369
db:	CNNVD	id:	CNNVD-202004-1359
db:	NVD	id:	CVE-2019-20748

LAST UPDATE DATE

2024-11-23T23:11:27.531000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-27300	date:	2020-05-09T00:00:00
db:	JVNDB	id:	JVNDB-2019-015369	date:	2020-05-14T00:00:00
db:	CNNVD	id:	CNNVD-202004-1359	date:	2020-04-26T00:00:00
db:	NVD	id:	CVE-2019-20748	date:	2024-11-21T04:39:15.537

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-27300	date:	2020-05-09T00:00:00
db:	JVNDB	id:	JVNDB-2019-015369	date:	2020-05-14T00:00:00
db:	CNNVD	id:	CNNVD-202004-1359	date:	2020-04-16T00:00:00
db:	NVD	id:	CVE-2019-20748	date:	2020-04-16T21:15:12.877