Mitsubishi Electric MELSEC iQ-F Series Plaintext Storage of a Password (CVE-2023-0457)

high Tenable OT Security Plugin ID 500885

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Plaintext Storage of a Password vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5U(C) CPU modules all models all versions, FX5UJ CPU modules all models all versions, FX5S CPU modules all models all versions, FX5-ENET all versions and FX5-ENET/IP all versions allows a remote unauthenticated attacker to disclose plaintext credentials stored in project files and login into FTP server or Web server.

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 that customers take the following mitigation measures to minimize the risk of exploiting this vulnerability:

- Encrypt the communication data or project files when sending and receiving or sharing these files.
- Use a firewall or virtual private network (VPN), etc. to prevent unauthorized access when Internet access is required.
- Use within a LAN and block access from untrusted networks and hosts through firewalls.

- Restrict physical access to affected products.
- For MELSEC iQ-F or iQ-R series, use an IP filter function to block access from untrusted hosts.

For details on the IP filter function, please refer to the following manuals for each product;

"12.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Ethernet Communication)

"1.13 Security" - "IP filter" in the MELSEC iQ-R Ethernet User’s Manual (Application).

For specific update instructions and additional details see the Mitsubishi Electric advisory.

Plugin Details

Severity: High

ID: 500885

Version: 1.6

Type: remote

Family: Tenable.ot

Published: 3/20/2023

Updated: 11/27/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-0457

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:mitsubishielectric:fx5s-30mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-60mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-80mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5uc-32mr%2fds-ts_firmware, cpe:/o:mitsubishielectric:fx5uc-64mt%2fd_firmware, cpe:/o:mitsubishielectric:fx5s-60mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5uj-24mr%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uj-60mt%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uj-40mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5s-30mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5s-30mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-60mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5uc-32mt%2fd_firmware, cpe:/o:mitsubishielectric:fx5uj-40mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5-enet%2fip_firmware:-, cpe:/o:mitsubishielectric:fx5uj-40mt%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uj-60mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-80mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-80mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5uj-24mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5uc-96mt%2fd_firmware, cpe:/o:mitsubishielectric:fx5uj-60mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5s-40mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5uj-60mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5s-40mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5uj-60mr%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uc-32mt%2fdss-ts_firmware, cpe:/o:mitsubishielectric:fx5uj-24mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5-enet_firmware:-, cpe:/o:mitsubishielectric:fx5uc-96mt%2fdss_firmware, cpe:/o:mitsubishielectric:fx5s-40mt%2fess_firmware, cpe:/o:mitsubishielectric:fx5uj-40mr%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uc-32mt%2fds-ts_firmware, cpe:/o:mitsubishielectric:fx5uj-40mr%2fes_firmware, cpe:/o:mitsubishielectric:fx5uj-24mt%2fes_firmware, cpe:/o:mitsubishielectric:fx5uj-24mt%2fes-a_firmware, cpe:/o:mitsubishielectric:fx5uc-32mt%2fdss_firmware, cpe:/o:mitsubishielectric:fx5uc-64mt%2fdss_firmware

Required KB Items: Tenable.ot/Mitsubishi

Exploit Ease: No known exploits are available

Patch Publication Date: 3/3/2023

Vulnerability Publication Date: 3/3/2023

Reference Information

CVE: CVE-2023-0457

CWE: 522

ICSA: 23-061-01

Detections

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