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Moxa PT-7528 and PT-7828 Series Weak Password Requirements (CVE-2020-6995)

critical Tenable OT Security Plugin ID 501541

Synopsis

The remote OT asset is affected by a vulnerability.

Description

In Moxa PT-7528 series firmware, Version 4.0 or lower, and PT-7828 series firmware, Version 3.9 or lower, the application utilizes weak password requirements, which may allow an attacker to gain unauthorized access.

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

https://www.us-cert.gov/ics/advisories/icsa-20-056-03

Plugin Details

Severity: Critical

ID: 501541

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 12/5/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2020-6995

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/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:moxa:pt-7528-12mst-12tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7828-f-24_firmware, cpe:/o:moxa:pt-7828-r-hv-hv_firmware, cpe:/o:moxa:pt-7528-24tx-wv-wv_firmware, cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7828-r-48_firmware, cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7828-f-48-hv_firmware, cpe:/o:moxa:pt-7828-f-hv_firmware, cpe:/o:moxa:pt-7828-r-24-24_firmware, cpe:/o:moxa:pt-7828-r-48-hv_firmware, cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7528-24tx-hv-hv_firmware, cpe:/o:moxa:pt-7528-24tx-wv_firmware, cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7828-f-48-48_firmware, cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7828-f-24-hv_firmware, cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7828-r-24-hv_firmware, cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7828-r-24_firmware, cpe:/o:moxa:pt-7828-r-48-48_firmware, cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-8msc-16tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7528-24tx-wv-hv_firmware, cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7828-r-hv_firmware, cpe:/o:moxa:pt-7528-20mst-4tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-24tx-hv_firmware, cpe:/o:moxa:pt-7828-f-hv-hv_firmware, cpe:/o:moxa:pt-7528-12mst-12tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7828-f-48_firmware, cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-16mst-8tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7828-f-24-24_firmware, cpe:/o:moxa:pt-7528-8ssc-16tx-4gsfp-hv-hv_firmware, cpe:/o:moxa:pt-7528-8mst-16tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7528-12msc-12tx-4gsfp-wv_firmware, cpe:/o:moxa:pt-7528-8ssc-16tx-4gsfp-wv-wv_firmware, cpe:/o:moxa:pt-7528-16msc-8tx-4gsfp-hv_firmware, cpe:/o:moxa:pt-7528-20msc-4tx-4gsfp-hv_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2020

Vulnerability Publication Date: 3/24/2020

Reference Information

CVE: CVE-2020-6995

CWE: 521

ICSA: 20-056-03