Details of VAR-202112-0105

ID

VAR-202112-0105

CVE

CVE-2021-44527

TITLE

UniFi Resource Exhaustion Vulnerability in Switch Firmware

Trust: 0.8

sources: JVNDB: JVNDB-2021-015797

DESCRIPTION

A vulnerability found in UniFi Switch firmware Version 5.43.35 and earlier allows a malicious actor who has already gained access to the network to perform a Deny of Service (DoS) attack on the affected switch.This vulnerability is fixed in UniFi Switch firmware 5.76.6 and later. UniFi A resource exhaustion vulnerability exists in switch firmware.Service operation interruption (DoS) It may be in a state

Trust: 1.71

sources: NVD: CVE-2021-44527 // JVNDB: JVNDB-2021-015797 // VULHUB: VHN-407758

AFFECTED PRODUCTS

vendor:	ui	model:	unifi switch	scope:	lt	version:	5.76.6	Trust: 1.0
vendor:	ubiquiti	model:	unifi スイッチ	scope:	eq	version:	-	Trust: 0.8
vendor:	ubiquiti	model:	unifi スイッチ	scope:	lte	version:	unifi switch firmware 5.43.35 and earlier	Trust: 0.8

sources: JVNDB: JVNDB-2021-015797 // NVD: CVE-2021-44527

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-44527
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2021-44527
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-202112-456
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-407758
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2021-44527
severity:	MEDIUM
baseScore:	6.1
vectorString:	AV:A/AC:L/AU:N/C:N/I:N/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	6.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-407758
severity:	MEDIUM
baseScore:	6.1
vectorString:	AV:A/AC:L/AU:N/C:N/I:N/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	6.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2021-44527
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2021-44527
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-407758 // JVNDB: JVNDB-2021-015797 // CNNVD: CNNVD-202112-456 // NVD: CVE-2021-44527

PROBLEMTYPE DATA

problemtype:	CWE-400	Trust: 1.1
problemtype:	Resource exhaustion (CWE-400) [NVD evaluation ]	Trust: 0.8

sources: VULHUB: VHN-407758 // JVNDB: JVNDB-2021-015797 // NVD: CVE-2021-44527

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202112-456

TYPE

resource management error

Trust: 0.6

sources: CNNVD: CNNVD-202112-456

PATCH

title:	Security Advisory Bulletin 022	url:	https://community.ui.com/releases/Security-Advisory-Bulletin-022-022/cd83c01b-33e4-454a-b3b9-1c3ccebea7cb	Trust: 0.8
title:	UniFi Switch Remediation of resource management error vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=173128	Trust: 0.6

sources: JVNDB: JVNDB-2021-015797 // CNNVD: CNNVD-202112-456

EXTERNAL IDS

db:	NVD	id:	CVE-2021-44527	Trust: 3.3
db:	JVNDB	id:	JVNDB-2021-015797	Trust: 0.8
db:	CNNVD	id:	CNNVD-202112-456	Trust: 0.6
db:	VULHUB	id:	VHN-407758	Trust: 0.1

sources: VULHUB: VHN-407758 // JVNDB: JVNDB-2021-015797 // CNNVD: CNNVD-202112-456 // NVD: CVE-2021-44527

REFERENCES

url:	https://community.ui.com/releases/security-advisory-bulletin-022-022/cd83c01b-33e4-454a-b3b9-1c3ccebea7cb	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2021-44527	Trust: 1.4

sources: VULHUB: VHN-407758 // JVNDB: JVNDB-2021-015797 // CNNVD: CNNVD-202112-456 // NVD: CVE-2021-44527

SOURCES

db:	VULHUB	id:	VHN-407758
db:	JVNDB	id:	JVNDB-2021-015797
db:	CNNVD	id:	CNNVD-202112-456
db:	NVD	id:	CVE-2021-44527

LAST UPDATE DATE

2024-11-23T22:32:59.691000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-407758	date:	2021-12-07T00:00:00
db:	JVNDB	id:	JVNDB-2021-015797	date:	2022-11-30T05:37:00
db:	CNNVD	id:	CNNVD-202112-456	date:	2021-12-09T00:00:00
db:	NVD	id:	CVE-2021-44527	date:	2024-11-21T06:31:09.933

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-407758	date:	2021-12-07T00:00:00
db:	JVNDB	id:	JVNDB-2021-015797	date:	2022-11-30T00:00:00
db:	CNNVD	id:	CNNVD-202112-456	date:	2021-12-07T00:00:00
db:	NVD	id:	CVE-2021-44527	date:	2021-12-07T14:15:09.847