Schneider Electric MiCOM Insufficient Session Expiration (CVE-2018-7758)

medium Tenable OT Security Plugin ID 500120

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A denial of service vulnerability exists in Schneider Electric's MiCOM Px4x (P540 range excluded) with legacy Ethernet board, MiCOM P540D Range with Legacy Ethernet Board, and MiCOM Px4x Rejuvenated could lose network communication in case of TCP/IP open requests on port 20000 (DNP3oE) if an older TCI/IP session is still open with identical IP address and port number.

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: Medium

ID: 500120

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 11/30/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2018-7758

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/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:schneider-electric:micom_p141_firmware:-, cpe:/o:schneider-electric:micom_p142_firmware:-, cpe:/o:schneider-electric:micom_p143_firmware:-, cpe:/o:schneider-electric:micom_p145_firmware:-, cpe:/o:schneider-electric:micom_p642_firmware:-, cpe:/o:schneider-electric:micom_p643_firmware:-, cpe:/o:schneider-electric:micom_p645_firmware:-, cpe:/o:schneider-electric:micom_p849_firmware:-, cpe:/o:schneider-electric:micom_p746_firmware:-, cpe:/o:schneider-electric:micom_p841a_firmware:-, cpe:/o:schneider-electric:micom_p841b_firmware:-, cpe:/o:schneider-electric:micom_p443_firmware:-, cpe:/o:schneider-electric:micom_p445_firmware:-, cpe:/o:schneider-electric:micom_p446_firmware:-, cpe:/o:schneider-electric:micom_p441_firmware:-, cpe:/o:schneider-electric:micom_p442_firmware:-, cpe:/o:schneider-electric:micom_p444_firmware:-, cpe:/o:schneider-electric:micom_p541_firmware:-, cpe:/o:schneider-electric:micom_p542_firmware:-, cpe:/o:schneider-electric:micom_p543_firmware:-, cpe:/o:schneider-electric:micom_p544_firmware:-, cpe:/o:schneider-electric:micom_p545_firmware:-, cpe:/o:schneider-electric:micom_p546_firmware:-

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 4/18/2018

Vulnerability Publication Date: 4/18/2018

Reference Information

CVE: CVE-2018-7758

CWE: 613

Detections

Analytics