Moxa TN-5900 and MGate Gateways Missing Release of Memory after Effective Lifetime (CVE-2021-46082)

high Tenable OT Security Plugin ID 501452

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Moxa TN-5900 v3.1 series routers, MGate 5109 v2.2 series protocol gateways, and MGate 5101-PBM-MN v2.1 series protocol gateways were discovered to contain a memory leak which allows attackers to cause a Denial of Service (DoS) via crafted packets.

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.

Plugin Details

Severity: High

ID: 501452

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 8/2/2023

Updated: 12/5/2024

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:N/I:N/A:C

CVSS Score Source: CVE-2021-46082

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:N/I:N/A:H

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

Vulnerability Information

CPE: cpe:/o:moxa:mgate_5109-t_firmware, cpe:/o:moxa:mgate_5101-pbm-mn-t_firmware, cpe:/o:moxa:mgate_5109_firmware, cpe:/o:moxa:mgate_5101-pbm-mn_firmware

Required KB Items: Tenable.ot/Moxa

Exploit Ease: No known exploits are available

Patch Publication Date: 2/18/2022

Vulnerability Publication Date: 2/18/2022

Reference Information

CVE: CVE-2021-46082

CWE: 401

Detections

Analytics