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ID

VAR-202107-0089


CVE

CVE-2020-20249


TITLE

Mikrotik RouterOs  Buffer error vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-009895

DESCRIPTION

Mikrotik RouterOs before stable 6.47 suffers from a memory corruption vulnerability in the resolver process. By sending a crafted packet, an authenticated remote attacker can cause a Denial of Service. Mikrotik RouterOs Exists in a buffer error vulnerability.Service operation interruption (DoS) It may be in 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

Trust: 1.8

sources: NVD: CVE-2020-20249 // JVNDB: JVNDB-2021-009895 // VULHUB: VHN-173708 // VULMON: CVE-2020-20249

AFFECTED PRODUCTS

vendor:mikrotikmodel:routerosscope:ltversion:6.47

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vendor:mikrotikmodel:routerosscope:eqversion: -

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vendor:mikrotikmodel:routerosscope:eqversion:6.47

Trust: 0.8

sources: JVNDB: JVNDB-2021-009895 // NVD: CVE-2020-20249

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-20249
value: MEDIUM

Trust: 1.0

NVD: CVE-2020-20249
value: MEDIUM

Trust: 0.8

CNNVD: CNNVD-202107-1302
value: MEDIUM

Trust: 0.6

VULHUB: VHN-173708
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2020-20249
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-173708
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-2020-20249
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-2020-20249
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-173708 // JVNDB: JVNDB-2021-009895 // CNNVD: CNNVD-202107-1302 // NVD: CVE-2020-20249

PROBLEMTYPE DATA

problemtype:CWE-787

Trust: 1.1

problemtype:Buffer error (CWE-119) [NVD evaluation ]

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problemtype:CWE-119

Trust: 0.1

sources: VULHUB: VHN-173708 // JVNDB: JVNDB-2021-009895 // NVD: CVE-2020-20249

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202107-1302

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202107-1302

PATCH

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

Trust: 0.8

title:Mikrotik RouterOs Buffer error vulnerability fixurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=158243

Trust: 0.6

sources: JVNDB: JVNDB-2021-009895 // CNNVD: CNNVD-202107-1302

EXTERNAL IDS

db:NVDid:CVE-2020-20249

Trust: 3.4

db:JVNDBid:JVNDB-2021-009895

Trust: 0.8

db:CNNVDid:CNNVD-202107-1302

Trust: 0.7

db:VULHUBid:VHN-173708

Trust: 0.1

db:VULMONid:CVE-2020-20249

Trust: 0.1

sources: VULHUB: VHN-173708 // VULMON: CVE-2020-20249 // JVNDB: JVNDB-2021-009895 // CNNVD: CNNVD-202107-1302 // NVD: CVE-2020-20249

REFERENCES

url:https://github.com/cq674350529/pocs_slides/blob/master/advisory/mikrotik/cve-2020-20249/readme.md

Trust: 2.6

url:https://nvd.nist.gov/vuln/detail/cve-2020-20249

Trust: 0.8

url:https://nvd.nist.gov

Trust: 0.1

sources: VULHUB: VHN-173708 // VULMON: CVE-2020-20249 // JVNDB: JVNDB-2021-009895 // CNNVD: CNNVD-202107-1302 // NVD: CVE-2020-20249

SOURCES

db:VULHUBid:VHN-173708
db:VULMONid:CVE-2020-20249
db:JVNDBid:JVNDB-2021-009895
db:CNNVDid:CNNVD-202107-1302
db:NVDid:CVE-2020-20249

LAST UPDATE DATE

2024-08-14T15:17:10.298000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-173708date:2022-06-28T00:00:00
db:VULMONid:CVE-2020-20249date:2021-07-19T00:00:00
db:JVNDBid:JVNDB-2021-009895date:2022-06-06T06:35:00
db:CNNVDid:CNNVD-202107-1302date:2021-08-02T00:00:00
db:NVDid:CVE-2020-20249date:2022-06-28T14:11:45.273

SOURCES RELEASE DATE

db:VULHUBid:VHN-173708date:2021-07-19T00:00:00
db:VULMONid:CVE-2020-20249date:2021-07-19T00:00:00
db:JVNDBid:JVNDB-2021-009895date:2022-06-06T00:00:00
db:CNNVDid:CNNVD-202107-1302date:2021-07-19T00:00:00
db:NVDid:CVE-2020-20249date:2021-07-19T18:15:08.260