PT-2021-09: Possibility of authorization in Remote Password mechanism using password hash

FX5U© CPU and FX5UJ CPU modules

Severity level

Severity level: Medium
Impact: Possibility of authorization in Remote Password mechanism using password hash in FX5U© CPU and FX5UJ CPU modules
Access Vector: Remote

CVSS v3.0
Base Score: 5,9
Vector: (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVE-2022-25156

Vulnerability description:

The vulnerability of the FX5U© CPU and FX5UJ CPU modules of Mitsubishi Electric FA products is associated with the possibility of using a weak password hash. Exploiting the vulnerability may allow an attacker to use the resulting hash value to recover the password value.

Advisory status

15.12.2021 - Vendor gets vulnerability details
31.03.2022 - Security advisory publication date (https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-031_en.pdf )

Credits

The vulnerability was detected by Dmitry Sklyarov and Anton Dorfman (Positive Technologies)