Details of VAR-202110-1760

ID

VAR-202110-1760

CVE

CVE-2021-34980

TITLE

NETGEAR R6260 Out-of-Bounds Write Vulnerability in Router

Trust: 0.8

sources: JVNDB: JVNDB-2021-017781

DESCRIPTION

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. When parsing the SOAP_LOGIN_TOKEN environment variable, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14107. Zero Day Initiative To this vulnerability ZDI-CAN-14107 Was numbering.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. NETGEAR R6260 is a router from Netgear. A hardware device that connects two or more networks and acts as a gateway between the networks

Trust: 2.79

sources: NVD: CVE-2021-34980 // JVNDB: JVNDB-2021-017781 // ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695

IOT TAXONOMY

category:

['Network device']

sub_category:

Trust: 0.6

sources: CNVD: CNVD-2022-06695

AFFECTED PRODUCTS

vendor:	netgear	model:	r6260	scope:	eq	version:	1.1.0.78_1.0.1	Trust: 1.0
vendor:	ネットギア	model:	r6260	scope:	eq	version:	-	Trust: 0.8
vendor:	ネットギア	model:	r6260	scope:	eq	version:	r6260 firmware 1.1.0.78_1.0.1	Trust: 0.8
vendor:	netgear	model:	r6260	scope:	-	version:	-	Trust: 0.7
vendor:	netgear	model:	r6260 1.1.0.78 1.0.1	scope:	-	version:	-	Trust: 0.6

sources: ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695 // JVNDB: JVNDB-2021-017781 // NVD: CVE-2021-34980

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-34980
value:	HIGH
Trust: 1.0
zdi-disclosures@trendmicro.com:	CVE-2021-34980
value:	HIGH
Trust: 1.0
NVD:	CVE-2021-34980
value:	HIGH
Trust: 0.8
ZDI:	CVE-2021-34980
value:	HIGH
Trust: 0.7
CNVD:	CNVD-2022-06695
value:	HIGH
Trust: 0.6
CNNVD:	CNNVD-202110-2073
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2021-34980
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
CNVD:	CNVD-2022-06695
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

zdi-disclosures@trendmicro.com:	CVE-2021-34980
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.0
Trust: 1.8
nvd@nist.gov:	CVE-2021-34980
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
ZDI:	CVE-2021-34980
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.0
Trust: 0.7

sources: ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695 // JVNDB: JVNDB-2021-017781 // CNNVD: CNNVD-202110-2073 // NVD: CVE-2021-34980 // NVD: CVE-2021-34980

PROBLEMTYPE DATA

problemtype:	CWE-121	Trust: 1.0
problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-017781 // NVD: CVE-2021-34980

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202110-2073

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202110-2073

PATCH

title:	Security Advisory for Vertical Privilege Escalation on Some Routers, PSV-2021-0150	url:	https://kb.netgear.com/000064262/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-PSV-2021-0150	Trust: 0.8
title:	NETGEAR has issued an update to correct this vulnerability.	url:	https://kb.netgear.com/000064262/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Routers-PSV-2021-0150?article=000064262	Trust: 0.7
title:	Patch for Buffer overflow vulnerability in NETGEAR R6260 stack	url:	https://www.cnvd.org.cn/patchInfo/show/316086	Trust: 0.6
title:	NETGEAR R6260 Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=167753	Trust: 0.6

sources: ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695 // JVNDB: JVNDB-2021-017781 // CNNVD: CNNVD-202110-2073

EXTERNAL IDS

db:	NVD	id:	CVE-2021-34980	Trust: 4.5
db:	ZDI	id:	ZDI-21-1242	Trust: 3.1
db:	JVNDB	id:	JVNDB-2021-017781	Trust: 0.8
db:	ZDI_CAN	id:	ZDI-CAN-14107	Trust: 0.7
db:	CNVD	id:	CNVD-2022-06695	Trust: 0.6
db:	CNNVD	id:	CNNVD-202110-2073	Trust: 0.6

sources: ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695 // JVNDB: JVNDB-2021-017781 // CNNVD: CNNVD-202110-2073 // NVD: CVE-2021-34980

REFERENCES

url:	https://www.zerodayinitiative.com/advisories/zdi-21-1242/	Trust: 3.0
url:	https://kb.netgear.com/000064262/security-advisory-for-vertical-privilege-escalation-on-some-routers-psv-2021-0150?article=000064262	Trust: 2.3
url:	https://nvd.nist.gov/vuln/detail/cve-2021-34980	Trust: 2.0

sources: ZDI: ZDI-21-1242 // CNVD: CNVD-2022-06695 // JVNDB: JVNDB-2021-017781 // CNNVD: CNNVD-202110-2073 // NVD: CVE-2021-34980

CREDITS

STARLabs

Trust: 1.3

sources: ZDI: ZDI-21-1242 // CNNVD: CNNVD-202110-2073

SOURCES

db:	ZDI	id:	ZDI-21-1242
db:	CNVD	id:	CNVD-2022-06695
db:	JVNDB	id:	JVNDB-2021-017781
db:	CNNVD	id:	CNNVD-202110-2073
db:	NVD	id:	CVE-2021-34980

LAST UPDATE DATE

2024-08-14T15:42:43.208000+00:00

SOURCES UPDATE DATE

db:	ZDI	id:	ZDI-21-1242	date:	2021-10-28T00:00:00
db:	CNVD	id:	CNVD-2022-06695	date:	2022-01-25T00:00:00
db:	JVNDB	id:	JVNDB-2021-017781	date:	2023-02-08T03:21:00
db:	CNNVD	id:	CNNVD-202110-2073	date:	2022-02-14T00:00:00
db:	NVD	id:	CVE-2021-34980	date:	2022-01-19T20:09:51.213

SOURCES RELEASE DATE

db:	ZDI	id:	ZDI-21-1242	date:	2021-10-28T00:00:00
db:	CNVD	id:	CNVD-2022-06695	date:	2022-01-25T00:00:00
db:	JVNDB	id:	JVNDB-2021-017781	date:	2023-02-08T00:00:00
db:	CNNVD	id:	CNNVD-202110-2073	date:	2021-10-28T00:00:00
db:	NVD	id:	CVE-2021-34980	date:	2022-01-13T22:15:12.767