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Mitsubishi Electric MELSEC-Q Series Ethernet Module Uncontrolled Resource Consumption (CVE-2019-10977)

high Tenable OT Security Plugin ID 500195

Synopsis

The remote OT asset is affected by a vulnerability.

Description

In Mitsubishi Electric MELSEC-Q series Ethernet module QJ71E71-100 serial number 20121 and prior, an attacker could send crafted TCP packets against the FTP service, forcing the target devices to enter an error mode and cause a denial-of- service condition.

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 has released new firmware Version 20122 for the QJ71E71-100 Ethernet module to mitigate the reported vulnerability.

Additional information about the vulnerabilities or Mitsubishi Electric's compensating control is available by contacting a local Mitsubishi Electric representative, which can be found at the following location:

https://us.mitsubishielectric.com/fa/en/about-us/distributors

Mitsubishi Electric strongly recommends that users should operate the affected device behind a firewall.

See Also

https://ics-cert.us-cert.gov/advisories/ICSA-19-141-02

http://www.securityfocus.com/bid/108419

Plugin Details

Severity: High

ID: 500195

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 2/7/2022

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:N/I:N/A:C

CVSS Score Source: CVE-2019-10977

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:mitsubishielectric:qj71e71-100_firmware

Required KB Items: Tenable.ot/Mitsubishi

Exploit Ease: No known exploits are available

Patch Publication Date: 5/23/2019

Vulnerability Publication Date: 5/23/2019

Reference Information

CVE: CVE-2019-10977

CWE: 755

ICSA: 19-141-02