Detections
Analytics

Schneider Electric Modicon Incorrect Authorization (CVE-2019-6855)

high Tenable OT Security Plugin ID 500345

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.
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.se.com/ww/en/download/document/SEVD-2019-344-02/

Plugin Details

Severity: High

ID: 500345

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 2/7/2022

Updated: 11/14/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.4

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-2019-6855

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:schneider-electric:modicon_m580_bmep584040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh584040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep586040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh586040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep581020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep583020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep583040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep584020_firmware, cpe:/o:schneider-electric:modicon_m580_bmep585040_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh582040_firmware, cpe:/o:schneider-electric:modicon_m580_bmep584040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh584040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmeh586040s_firmware, cpe:/o:schneider-electric:modicon_m580_bmep582040s_firmware, cpe:/o:schneider-electric:modicon_m340_bmxp3420302_firmware, cpe:/o:schneider-electric:modicon_m340_bmxp342020_firmware, cpe:/o:schneider-electric:modicon_m340_bmxp342000_firmware, cpe:/o:schneider-electric:modicon_m340_bmxp341000_firmware, cpe:/o:schneider-electric:modicon_m340_bmxp3420102_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 1/6/2020

Vulnerability Publication Date: 1/6/2020

Reference Information

CVE: CVE-2019-6855

CWE: 863