Eaton easyE4 PLC Inadequate Encryption Strength (CVE-2023-43776)

medium Tenable OT Security Plugin ID 501761

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Eaton easyE4 PLC offers a device password protection functionality to facilitate a secure connection and prevent unauthorized access. It was observed that the device password was stored with a weak encoding algorithm in the easyE4 program file when exported to SD card (*.PRG file ending).

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

Solution

Refer to the vendor advisory.

See Also

http://www.nessus.org/u?02516ed8

Plugin Details

Severity: Medium

ID: 501761

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 10/25/2023

Updated: 2/21/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-43776

CVSS v3

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: cpe:/o:eaton:easy-e4-ac-12rc1p_firmware, cpe:/o:eaton:easy-e4-ac-12rcx1p_firmware, cpe:/o:eaton:easy-e4-ac-16re1p_firmware, cpe:/o:eaton:easy-e4-dc-12tc1p_firmware, cpe:/o:eaton:easy-e4-dc-12tcx1p_firmware, cpe:/o:eaton:easy-e4-dc-16te1p_firmware, cpe:/o:eaton:easy-e4-dc-4pe1p_firmware, cpe:/o:eaton:easy-e4-dc-6ae1p_firmware, cpe:/o:eaton:easy-e4-dc-8te1p_firmware, cpe:/o:eaton:easy-e4-uc-12rc1p_firmware, cpe:/o:eaton:easy-e4-uc-12rcx1p_firmware, cpe:/o:eaton:easy-e4-uc-16re1_firmware, cpe:/o:eaton:easy-e4-uc-16re1p_firmware, cpe:/o:eaton:easy-e4-uc-8re1p_firmware, cpe:/o:eaton:easy_e4-ac-8re1p_firmware

Required KB Items: Tenable.ot/Eaton

Exploit Ease: No known exploits are available

Patch Publication Date: 10/17/2023

Vulnerability Publication Date: 10/17/2023

Reference Information

CVE: CVE-2023-43776

CWE: 326