Mitsubishi Electric FA Products Use of Weak Hash (CVE-2022-25156)

high Tenable OT Security Plugin ID 500643

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Use of Weak Hash vulnerability in Mitsubishi Electric MELSEC iQ-F series FX5U(C) CPU all versions and Mitsubishi Electric MELSEC iQ-F series FX5UJ CPU all versions allows a remote unauthenticated attacker to login to the product by using a password reversed from a previously eavesdropped password hash.

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Mitsubishi Electric recommends users take the following mitigation measures to minimize the risk of exploitation of these vulnerabilities:

- When communicating via untrusted networks or hosts, encrypt the communication path by setting up a VPN.

- Use firewalls or IP filter function to restrict connections to the products and prevent access from untrusted networks or hosts. For details on IP filter function, refer to the following product manual:
- “12.1 IP Filter Function” in the MELSEC iQ-F FX 5 User’s Manual (Ethernet Communication)
- "IP filter" of "1.13 Security" in the MELSEC iQ-R Ethernet User's Manual (Application)
- "IP Filter Function" of "6.2 Security Function" in the MELSEC iQ-R Motion Controller Programming Manual (Common)
- "IP filter" of "1.4 Security" in the MELSEC iQ-R CC-Link IE TSN User's Manual (Application)
- "IP filter" of "9.5 Security" in the MELSEC iQ-R CC-Link IE TSN Plus Master/Local Module User’s Manual
- "14.3 IP Filter Function" in the Q Corresponding Ethernet Interface Module User's Manual (Basic)
- "14.3 IP Filter Function" in the MELSEC-L Ethernet Interface Module User's Manual (Basic)

For more information see Mitsubishi Electric’s advisory 2021-031

Plugin Details

Severity: High

ID: 500643

Version: 1.7

Type: remote

Family: Tenable.ot

Published: 4/28/2022

Updated: 9/4/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2022-25156

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:mitsubishielectric:fx5uc-32mr%2fds-ts_firmware:-, cpe:/o:mitsubishielectric:fx5uj-24mr%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uj-24mt%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uc-32mt%2fd_firmware:-, cpe:/o:mitsubishielectric:fx5uj-40mr%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uj-60mt%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uc-32mt%2fdss_firmware:-, cpe:/o:mitsubishielectric:fx5uj-24mt%2fess_firmware:-, cpe:/o:mitsubishielectric:fx5uj-40mt%2fess_firmware:-, cpe:/o:mitsubishielectric:fx5uj-60mt%2fess_firmware:-, cpe:/o:mitsubishielectric:fx5uc-32mt%2fds-ts_firmware:-, cpe:/o:mitsubishielectric:fx5uc-32mt%2fdss-ts_firmware:-, cpe:/o:mitsubishielectric:fx5uc_firmware:-, cpe:/o:mitsubishielectric:fx5uj-40mt%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uj-60mr%2fes_firmware:-, cpe:/o:mitsubishielectric:fx5uj_firmware:-

Required KB Items: Tenable.ot/Mitsubishi

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2022

Vulnerability Publication Date: 4/1/2022

Reference Information

CVE: CVE-2022-25156

CWE: 916

ICSA: 22-090-04

Detections

Analytics