Details of VAR-202107-0091

ID

VAR-202107-0091

CVE

CVE-2020-20252

TITLE

Mikrotik RouterOs In NULL Pointer dereference vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-009265

DESCRIPTION

Mikrotik RouterOs before stable version 6.47 suffers from a memory corruption vulnerability in the /nova/bin/lcdstat process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference)

Trust: 1.8

sources: NVD: CVE-2020-20252 // JVNDB: JVNDB-2021-009265 // VULHUB: VHN-173712 // VULMON: CVE-2020-20252

AFFECTED PRODUCTS

vendor:	mikrotik	model:	routeros	scope:	lt	version:	6.47	Trust: 1.0
vendor:	mikrotik	model:	routeros	scope:	eq	version:	6.47	Trust: 0.8
vendor:	mikrotik	model:	routeros	scope:	eq	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2021-009265 // NVD: CVE-2020-20252

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-20252
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2020-20252
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-202107-959
value:	MEDIUM
Trust: 0.6
VULHUB:	VHN-173712
value:	MEDIUM
Trust: 0.1
VULMON:	CVE-2020-20252
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-20252
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: 1.9
VULHUB:	VHN-173712
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-2020-20252
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-2020-20252
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-173712 // VULMON: CVE-2020-20252 // JVNDB: JVNDB-2021-009265 // CNNVD: CNNVD-202107-959 // NVD: CVE-2020-20252

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-173712 // JVNDB: JVNDB-2021-009265 // NVD: CVE-2020-20252

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202107-959

TYPE

code problem

Trust: 0.6

sources: CNNVD: CNNVD-202107-959

PATCH

title:	Top Page	url:	https://mikrotik.com/	Trust: 0.8
title:	Mikrotik Routeros Remediation of resource management error vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=156648	Trust: 0.6

sources: JVNDB: JVNDB-2021-009265 // CNNVD: CNNVD-202107-959

EXTERNAL IDS

db:	NVD	id:	CVE-2020-20252	Trust: 3.4
db:	JVNDB	id:	JVNDB-2021-009265	Trust: 0.8
db:	CNNVD	id:	CNNVD-202107-959	Trust: 0.6
db:	VULHUB	id:	VHN-173712	Trust: 0.1
db:	VULMON	id:	CVE-2020-20252	Trust: 0.1

sources: VULHUB: VHN-173712 // VULMON: CVE-2020-20252 // JVNDB: JVNDB-2021-009265 // CNNVD: CNNVD-202107-959 // NVD: CVE-2020-20252

REFERENCES

url:	https://github.com/cq674350529/pocs_slides/blob/master/advisory/mikrotik/cve-2020-20252/readme.md	Trust: 2.6
url:	https://nvd.nist.gov/vuln/detail/cve-2020-20252	Trust: 0.8
url:	https://cwe.mitre.org/data/definitions/476.html	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1

sources: VULHUB: VHN-173712 // VULMON: CVE-2020-20252 // JVNDB: JVNDB-2021-009265 // CNNVD: CNNVD-202107-959 // NVD: CVE-2020-20252

SOURCES

db:	VULHUB	id:	VHN-173712
db:	VULMON	id:	CVE-2020-20252
db:	JVNDB	id:	JVNDB-2021-009265
db:	CNNVD	id:	CNNVD-202107-959
db:	NVD	id:	CVE-2020-20252

LAST UPDATE DATE

2024-08-14T13:43:27.759000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-173712	date:	2022-06-28T00:00:00
db:	VULMON	id:	CVE-2020-20252	date:	2021-07-15T00:00:00
db:	JVNDB	id:	JVNDB-2021-009265	date:	2022-04-19T07:46:00
db:	CNNVD	id:	CNNVD-202107-959	date:	2021-07-16T00:00:00
db:	NVD	id:	CVE-2020-20252	date:	2022-06-28T14:11:45.273

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-173712	date:	2021-07-13T00:00:00
db:	VULMON	id:	CVE-2020-20252	date:	2021-07-13T00:00:00
db:	JVNDB	id:	JVNDB-2021-009265	date:	2022-04-19T00:00:00
db:	CNNVD	id:	CNNVD-202107-959	date:	2021-07-13T00:00:00
db:	NVD	id:	CVE-2020-20252	date:	2021-07-13T18:15:07.813