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MitreCVE-2021-33823

HistoryJun 18, 2021 - 8:15 p.m.

CVE-2021-33823

2021-06-1820:15:07

mitre

web.nvd.nist.gov

cve-2021-33823

moxa mgate mb3180

denial-of-service

tcp syn flood

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

48.8%

JSON

An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. Attacker could send a huge amount of TCP SYN packet to make web service’s resource exhausted. Then the web server is denial-of-service.

Affected configurations

Nvd

Node

moxamgate_mb3180Match-

AND

moxamgate_mb3180_firmwareMatch2.1build_18113012

VendorProductVersionCPE
moxamgate_mb3180-cpe:2.3:h:moxa:mgate_mb3180:-:*:*:*:*:*:*:*
moxamgate_mb3180_firmware2.1cpe:2.3:o:moxa:mgate_mb3180_firmware:2.1:build_18113012:*:*:*:*:*:*

Vendor	Product	Version	CPE
moxa	mgate_mb3180	-	cpe:2.3:h:moxa:mgate_mb3180:-:::::::*
moxa	mgate_mb3180_firmware	2.1	cpe:2.3:o:moxa:mgate_mb3180_firmware:2.1:build_18113012::::::

References

github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33823.md

www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-mb3180-mb3280-mb3480-series

Social References

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

48.8%

JSON

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