NVD

CVE-2021-20593 Detail

Description

Incorrect Implementation of Authentication Algorithm in Mitsubishi Electric Air Conditioning System/Centralized Controllers (G-50A Ver.2.50 to Ver. 3.35, GB-50A Ver.2.50 to Ver. 3.35, AG-150A-A Ver.3.20 and prior, AG-150A-J Ver.3.20 and prior, GB-50ADA-A Ver.3.20 and prior, GB-50ADA-J Ver.3.20 and prior, EB-50GU-A Ver 7.09 and prior, EB-50GU-J Ver 7.09 and prior, AE-200A Ver 7.93 and prior, AE-200E Ver 7.93 and prior, AE-50A Ver 7.93 and prior, AE-50E Ver 7.93 and prior, EW-50A Ver 7.93 and prior, EW-50E Ver 7.93 and prior, TE-200A Ver 7.93 and prior, TE-50A Ver 7.93 and prior, TW-50A Ver 7.93 and prior, CMS-RMD-J Ver.1.30 and prior) and Air Conditioning System/Expansion Controllers (PAC-YG50ECA Ver.2.20 and prior) allows a remote authenticated attacker to impersonate administrators to disclose configuration information of the air conditioning system and tamper information (e.g. operation information and configuration of air conditioning system) by exploiting this vulnerability.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 7.1 HIGH

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

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://jvn.jp/vu/JVNVU96046575/index.html	Third Party Advisory
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-004_en.pdf	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 8/05/2021 11:17:43 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ae-200a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-200a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ae-200e_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-200e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ae-50a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-50a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ae-50e_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ae-50e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ag-150a-a_firmware::::::::* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:ag-150a-a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ag-150a-j_firmware::::::::* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:ag-150a-j:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:cms-rmd-j_firmware::::::::* versions up to (including) 1.30 OR cpe:2.3:h:mitsubishi:cms-rmd-j:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:eb-50gu-a_firmware::::::::* versions up to (including) 7.09 OR cpe:2.3:h:mitsubishi:eb-50gu-a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:eb-50gu-j_firmware::::::::* versions up to (including) 7.09 OR cpe:2.3:h:mitsubishi:eb-50gu-j:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ew-50a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ew-50a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:ew-50e_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:ew-50e:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:g-50a_firmware::::::::* versions from (including) 2.50 up to (including) 3.35 OR cpe:2.3:h:mitsubishi:g-50a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:gb-50a_firmware::::::::* versions from (including) 2.50 up to (including) 3.35 OR cpe:2.3:h:mitsubishi:gb-50a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:gb-50ada-a_firmware::::::::* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:gb-50ada-a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:gb-50ada-j_firmware::::::::* versions up to (including) 3.20 OR cpe:2.3:h:mitsubishi:gb-50ada-j:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:pac-yg50eca_firmware::::::::* versions up to (including) 2.20 OR cpe:2.3:h:mitsubishi:pac-yg50eca:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:te-200a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:te-200a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:te-50a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:te-50a:-:::::::*
Added	CPE Configuration		AND OR cpe:2.3:o:mitsubishi:tw-50a_firmware::::::::* versions up to (including) 7.93 OR cpe:2.3:h:mitsubishi:tw-50a:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:S/C:P/I:P/A:N)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Added	CWE		NIST CWE-287
Changed	Reference Type	https://jvn.jp/vu/JVNVU96046575/index.html No Types Assigned	https://jvn.jp/vu/JVNVU96046575/index.html Third Party Advisory
Changed	Reference Type	https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-004_en.pdf No Types Assigned	https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-004_en.pdf Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-20593
NVD Published Date:
07/13/2021
NVD Last Modified:
08/05/2021
Source:
Mitsubishi Electric Corporation

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National Vulnerability Database