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ID

VAR-202105-0093


CVE

CVE-2020-20253


TITLE

Mikrotik RouterOs  Vulnerability for division by zero in

Trust: 0.8

sources: JVNDB: JVNDB-2021-007071

DESCRIPTION

Mikrotik RouterOs before 6.47 (stable tree) suffers from a divison by zero vulnerability in the /nova/bin/lcdstat process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error. Mikrotik RouterOs Is vulnerable to division by zero.Denial of service (DoS) It may be put into a state. 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. Mikrotik RouterOs prior to 6.47 has a security vulnerability, which stems from a memory corruption vulnerability in the /nova/bin/lcdstat process

Trust: 1.8

sources: NVD: CVE-2020-20253 // JVNDB: JVNDB-2021-007071 // VULHUB: VHN-173713 // VULMON: CVE-2020-20253

AFFECTED PRODUCTS

vendor:mikrotikmodel:routerosscope:ltversion:6.47

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vendor:mikrotikmodel:routerosscope:eqversion: -

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vendor:mikrotikmodel:routerosscope: - version: -

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vendor:mikrotikmodel:routerosscope:eqversion:6.47 (stable tree)

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sources: JVNDB: JVNDB-2021-007071 // NVD: CVE-2020-20253

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-20253
value: MEDIUM

Trust: 1.0

NVD: CVE-2020-20253
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-202105-1221
value: MEDIUM

Trust: 0.6

VULHUB: VHN-173713
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2020-20253
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-173713
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-2020-20253
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-2020-20253
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-173713 // JVNDB: JVNDB-2021-007071 // CNNVD: CNNVD-202105-1221 // NVD: CVE-2020-20253

PROBLEMTYPE DATA

problemtype:CWE-369

Trust: 1.1

problemtype:Division by zero (CWE-369) [NVD Evaluation ]

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sources: VULHUB: VHN-173713 // JVNDB: JVNDB-2021-007071 // NVD: CVE-2020-20253

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202105-1221

TYPE

digital error

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sources: CNNVD: CNNVD-202105-1221

PATCH

title:Top Pageurl:https://mikrotik.com/

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title:MikroTik RouterOS Fixes for digital error vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=151990

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sources: JVNDB: JVNDB-2021-007071 // CNNVD: CNNVD-202105-1221

EXTERNAL IDS

db:NVDid:CVE-2020-20253

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db:JVNDBid:JVNDB-2021-007071

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db:CNNVDid:CNNVD-202105-1221

Trust: 0.7

db:VULHUBid:VHN-173713

Trust: 0.1

db:VULMONid:CVE-2020-20253

Trust: 0.1

sources: VULHUB: VHN-173713 // VULMON: CVE-2020-20253 // JVNDB: JVNDB-2021-007071 // CNNVD: CNNVD-202105-1221 // NVD: CVE-2020-20253

REFERENCES

url:http://seclists.org/fulldisclosure/2021/may/14

Trust: 2.7

url:https://github.com/cq674350529/pocs_slides/blob/master/pocs/mikrotik/vul_lcdstat_4/readme.md

Trust: 1.8

url:https://nvd.nist.gov/vuln/detail/cve-2020-20253

Trust: 1.4

url:https://nvd.nist.gov

Trust: 0.1

sources: VULHUB: VHN-173713 // VULMON: CVE-2020-20253 // JVNDB: JVNDB-2021-007071 // CNNVD: CNNVD-202105-1221 // NVD: CVE-2020-20253

SOURCES

db:VULHUBid:VHN-173713
db:VULMONid:CVE-2020-20253
db:JVNDBid:JVNDB-2021-007071
db:CNNVDid:CNNVD-202105-1221
db:NVDid:CVE-2020-20253

LAST UPDATE DATE

2024-08-14T15:01:29.122000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-173713date:2021-05-25T00:00:00
db:VULMONid:CVE-2020-20253date:2021-05-18T00:00:00
db:JVNDBid:JVNDB-2021-007071date:2022-02-02T08:32:00
db:CNNVDid:CNNVD-202105-1221date:2021-05-26T00:00:00
db:NVDid:CVE-2020-20253date:2021-05-25T12:28:34.190

SOURCES RELEASE DATE

db:VULHUBid:VHN-173713date:2021-05-18T00:00:00
db:VULMONid:CVE-2020-20253date:2021-05-18T00:00:00
db:JVNDBid:JVNDB-2021-007071date:2022-02-02T00:00:00
db:CNNVDid:CNNVD-202105-1221date:2021-05-18T00:00:00
db:NVDid:CVE-2020-20253date:2021-05-18T14:15:07.293