Rockwellautomation Micrologix Use of Hard-coded Credentials

critical Tenable.ot Plugin ID 500369
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, The cryptographic key utilized to help protect the account password is hard coded into the RSLogix 500 binary file. An attacker could identify cryptographic keys and use it for further cryptographic attacks that could ultimately lead to a remote attacker gaining unauthorized access to the controller.

Solution

Refer to vendor advisory for Security Updates

See Also

https://www.us-cert.gov/ics/advisories/icsa-20-070-06

Plugin Details

Severity: Critical

ID: 500369

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2020-6990

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:2.3:o:rockwellautomation:micrologix_1400_a_firmware:*:*:*:*:*:*:*:*, cpe:2.3:o:rockwellautomation:micrologix_1400_b_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:micrologix_1400:-:*:*:*:*:*:*:*, cpe:2.3:o:rockwellautomation:micrologix_1100_firmware:*:*:*:*:*:*:*:*, cpe:2.3:h:rockwellautomation:micrologix_1100:-:*:*:*:*:*:*:*, cpe:2.3:a:rockwellautomation:rslogix_500:*:*:*:*:*:*:*:*

Patch Publication Date: 3/16/2020

Vulnerability Publication Date: 3/16/2020

Reference Information

CVE: CVE-2020-6990