CVE-2021-20595 XML external entity in Air Conditioning System/Centralized Controllers G-50A; GB-50A; GB-24A; AG-150A-A; AG-150A-J; GB-50ADA-A; GB-50ADA-J; EB-50GU-A; EB-50GU-J; AE-200A; AE-200E; AE-50A; AE-50E; EW-50A; EW-50E; TE-200A; TE-50A; TW-50A; CMS-RMD-J; Air Conditioning System/Expansion Controllers PAC-YG50ECA; Air Conditioning System/BM adapter BAC-HD150
Remote unauthenticated attackers can exploit XML External Entity flaws in Mitsubishi air conditioning controllers to disclose data or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20595?
CVE-2021-20595 is a high-severity vulnerability in Air Conditioning System/Centralized Controllers G-50A; GB-50A; GB-24A; AG-150A-A; AG-150A-J; GB-50ADA-A; GB-50ADA-J; EB-50GU-A; EB-50GU-J; AE-200A; AE-200E; AE-50A; AE-50E; EW-50A; EW-50E; TE-200A; TE-50A; TW-50A; CMS-RMD-J; Air Conditioning System/Expansion Controllers PAC-YG50ECA; Air Conditioning System/BM adapter BAC-HD150, published on 13 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Restriction of XML External Entity Reference vulnerability in Mitsubishi Electric Air Conditioning System/Centralized Controllers (G-50A Ver.3.35 and prior, GB-50A Ver.3.35 and prior, GB-24A Ver.9.11 and prior, 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), Air Conditioning System/Expansion Controllers (PAC-YG50ECA Ver.2.20 and prior) and Air Conditioning System/BM adapter(BAC-HD150 Ver.2.21 and prior) allows a remote unauthenticated attacker to disclose some of data in the air conditioning system or cause a DoS condition by sending specially crafted packets.
Weakness: CWE-611
Which versions are affected by CVE-2021-20595?
It affects 19 products.
Products include Mitsubishi Ae-200a Firmware, Mitsubishi Ae-200e Firmware, Mitsubishi Ae-50a Firmware, Mitsubishi Ae-50e Firmware, Mitsubishi Ag-150a-a Firmware, Mitsubishi Ag-150a-J Firmware and 13 more.
How do I fix CVE-2021-20595?
No fix has been published for CVE-2021-20595 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-20595 being exploited?
There is no known exploitation of CVE-2021-20595 in the wild and no public exploit code.
Other vulnerabilities in Air Conditioning System/Centralized Controllers G-50A; GB-50A; GB-24A; AG-150A-A; AG-150A-J; GB-50ADA-A; GB-50ADA-J; EB-50GU-A; EB-50GU-J; AE-200A; AE-200E; AE-50A; AE-50E; EW-50A; EW-50E; TE-200A; TE-50A; TW-50A; CMS-RMD-J; Air Conditioning System/Expansion Controllers PAC-YG50ECA; Air Conditioning System/BM adapter BAC-HD150
- CVE-2022-24296 Weak cryptography in Air Conditioning System G-150AD; Air Conditioning System AG-150A-A; Air Conditioning System AG-150A-J; Air Conditioning System GB-50AD; Air Conditioning System GB-50ADA-A; Air Conditioning System GB-50ADA-J; Air Conditioning System EB-50GU-A; Air Conditioning System EB-50GU-J; Air Conditioning System AE-200J; Air Conditioning System AE-200A; Air Conditioning System AE-200E; Air Conditioning System AE-50J; Air Conditioning System AE-50A; Air Conditioning System AE-50E; Air Conditioning System EW-50J; Air Conditioning System EW-50A; Air Conditioning System EW-50E; Air Conditioning System TE-200A; Air Conditioning System TE-50A; Air Conditioning System TW-50A
- CVE-2021-20593 Auth bypass in Air Conditioning System/Centralized Controllers G-50A; GB-50A; AG-150A-A; AG-150A-J; GB-50ADA-A; GB-50ADA-J; EB-50GU-A; EB-50GU-J; AE-200A; AE-200E; AE-50A; AE-50E; EW-50A; EW-50E; TE-200A; TE-50A; TW-50A; CMS-RMD-J; Air Conditioning System/Expansion Controllers PAC-YG50ECA
Sources
Also known as GHSA-rmww-xfp2-vx9m.