XML External Entity injection in Mitsubishi Electric products - CVE-2021-20595

Vulnerability identifier: #VU54512

CSH Severity: High

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:L/SI:N/SA:N/E:U/U:Amber

CVE-ID: CVE-2021-20595

CWE-ID: CWE-611

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
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
PAC-YG50ECA
BAC-HD150

Software vendor:
Mitsubishi Electric

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Install updates from vendor's website.

• https://ics-cert.us-cert.gov/advisories/icsa-21-182-05