CVE-2021-20593

Published: Jul 13, 2021Modified: Nov 21, 2024

7.1

Vector

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

Exploitability: 2.8 / Impact: 4.2

Source: NVD

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.

Affected (19)

Products: Mitsubishi: G 50a Firmware, Gb 50a Firmware, Ag 150a A Firmware, Ag 150a J Firmware, Gb 50ada A Firmware, Gb 50ada J Firmware, Eb 50gu A Firmware, Eb 50gu J Firmware, Ae 200a Firmware, Ae 200e Firmware, Ae 50a Firmware, Ae 50e Firmware, Ew 50a Firmware, Ew 50e Firmware, Te 200a Firmware, Te 50a Firmware, Tw 50a Firmware, Cms Rmd J Firmware, Pac Yg50eca Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi G 50a Firmware	From 2.50 to 3.35

Running on/with	Platform Versions
Mitsubishi G 50a	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Gb 50a Firmware	From 2.50 to 3.35

Running on/with	Platform Versions
Mitsubishi Gb 50a	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ag 150a A Firmware	Up to 3.20

Running on/with	Platform Versions
Mitsubishi Ag 150a A	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ag 150a J Firmware	Up to 3.20

Running on/with	Platform Versions
Mitsubishi Ag 150a J	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Gb 50ada A Firmware	Up to 3.20

Running on/with	Platform Versions
Mitsubishi Gb 50ada A	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Gb 50ada J Firmware	Up to 3.20

Running on/with	Platform Versions
Mitsubishi Gb 50ada J	All versions

Configuration G

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Eb 50gu A Firmware	Up to 7.09

Running on/with	Platform Versions
Mitsubishi Eb 50gu A	All versions

Configuration H

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Eb 50gu J Firmware	Up to 7.09

Running on/with	Platform Versions
Mitsubishi Eb 50gu J	All versions

Configuration I

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ae 200a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ae 200a	All versions

Configuration J

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ae 200e Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ae 200e	All versions

Configuration K

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ae 50a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ae 50a	All versions

Configuration L

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ae 50e Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ae 50e	All versions

Configuration M

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ew 50a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ew 50a	All versions

Configuration N

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Ew 50e Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Ew 50e	All versions

Configuration O

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Te 200a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Te 200a	All versions

Configuration P

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Te 50a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Te 50a	All versions

Configuration Q

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Tw 50a Firmware	Up to 7.93

Running on/with	Platform Versions
Mitsubishi Tw 50a	All versions

Configuration R

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Cms Rmd J Firmware	Up to 1.30

Running on/with	Platform Versions
Mitsubishi Cms Rmd J	All versions

Configuration S

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Mitsubishi Pac Yg50eca Firmware	Up to 2.20

Running on/with	Platform Versions
Mitsubishi Pac Yg50eca	All versions

Related CWEs

CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (4)

https://jvn.jp/vu/JVNVU96046575/index.html

Source: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

Third Party Advisory

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-004_en.pdf

Source: Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

Vendor Advisory

https://jvn.jp/vu/JVNVU96046575/index.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-004_en.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.