Details of VAR-202105-0097

ID

VAR-202105-0097

CVE

CVE-2020-20266

TITLE

Mikrotik RouterOs In NULL Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-007082

DESCRIPTION

Mikrotik RouterOs before 6.47 (stable tree) suffers from a memory corruption vulnerability in the /nova/bin/dot1x process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference). MikroTik RouterOS is a Linux-based router operating system developed by Latvian MikroTik Company. The system can be deployed in a PC so that it provides router functionality

Trust: 1.8

sources: NVD: CVE-2020-20266 // JVNDB: JVNDB-2021-007082 // VULHUB: VHN-173727 // VULMON: CVE-2020-20266

AFFECTED PRODUCTS

vendor:	mikrotik	model:	routeros	scope:	lt	version:	6.47	Trust: 1.0
vendor:	mikrotik	model:	routeros	scope:	eq	version:	-	Trust: 0.8
vendor:	mikrotik	model:	routeros	scope:	eq	version:	6.47 (stable tree)	Trust: 0.8

sources: JVNDB: JVNDB-2021-007082 // NVD: CVE-2020-20266

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-20266
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2020-20266
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-202105-1272
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-173727
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-20266
severity:	MEDIUM
baseScore:	4.0
vectorString:	AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-173727
severity:	MEDIUM
baseScore:	4.0
vectorString:	AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2020-20266
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2020-20266
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: VULHUB: VHN-173727 // JVNDB: JVNDB-2021-007082 // CNNVD: CNNVD-202105-1272 // NVD: CVE-2020-20266

PROBLEMTYPE DATA

problemtype:	CWE-476	Trust: 1.1
problemtype:	CWE-787	Trust: 1.1
problemtype:	NULL Pointer dereference (CWE-476) [NVD Evaluation ]	Trust: 0.8

sources: VULHUB: VHN-173727 // JVNDB: JVNDB-2021-007082 // NVD: CVE-2020-20266

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202105-1272

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202105-1272

PATCH

title:	Top Page	url:	https://mikrotik.com/	Trust: 0.8
title:	MikroTik RouterOS Fixes for code issue vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=152012	Trust: 0.6

sources: JVNDB: JVNDB-2021-007082 // CNNVD: CNNVD-202105-1272

EXTERNAL IDS

db:	NVD	id:	CVE-2020-20266	Trust: 3.4
db:	JVNDB	id:	JVNDB-2021-007082	Trust: 0.8
db:	CNNVD	id:	CNNVD-202105-1272	Trust: 0.7
db:	VULHUB	id:	VHN-173727	Trust: 0.1
db:	VULMON	id:	CVE-2020-20266	Trust: 0.1

sources: VULHUB: VHN-173727 // VULMON: CVE-2020-20266 // JVNDB: JVNDB-2021-007082 // CNNVD: CNNVD-202105-1272 // NVD: CVE-2020-20266

REFERENCES

url:	https://seclists.org/fulldisclosure/2021/may/11	Trust: 2.7
url:	https://github.com/cq674350529/pocs_slides/blob/master/pocs/mikrotik/vul_dot1x/readme.md	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2020-20266	Trust: 0.8
url:	https://nvd.nist.gov	Trust: 0.1

sources: VULHUB: VHN-173727 // VULMON: CVE-2020-20266 // JVNDB: JVNDB-2021-007082 // CNNVD: CNNVD-202105-1272 // NVD: CVE-2020-20266

SOURCES

db:	VULHUB	id:	VHN-173727
db:	VULMON	id:	CVE-2020-20266
db:	JVNDB	id:	JVNDB-2021-007082
db:	CNNVD	id:	CNNVD-202105-1272
db:	NVD	id:	CVE-2020-20266

LAST UPDATE DATE

2024-08-14T15:38:03.451000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-173727	date:	2022-06-28T00:00:00
db:	VULMON	id:	CVE-2020-20266	date:	2021-05-19T00:00:00
db:	JVNDB	id:	JVNDB-2021-007082	date:	2022-02-02T08:32:00
db:	CNNVD	id:	CNNVD-202105-1272	date:	2021-05-26T00:00:00
db:	NVD	id:	CVE-2020-20266	date:	2022-06-28T14:11:45.273

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-173727	date:	2021-05-19T00:00:00
db:	VULMON	id:	CVE-2020-20266	date:	2021-05-19T00:00:00
db:	JVNDB	id:	JVNDB-2021-007082	date:	2022-02-02T00:00:00
db:	CNNVD	id:	CNNVD-202105-1272	date:	2021-05-19T00:00:00
db:	NVD	id:	CVE-2020-20266	date:	2021-05-19T12:15:07.813