Rockwellautomation Micrologix Improper Authentication

high Tenable.ot Plugin ID 500368
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, A remote, unauthenticated attacker can send a request from the RSLogix 500 software to the victim’s MicroLogix controller. The controller will then respond to the client with used password values to authenticate the user on the client-side. This method of authentication may allow an attacker to bypass authentication altogether, disclose sensitive information, or leak credentials.

Solution

Refer to vendor advisory for Security Updates

See Also

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

Plugin Details

Severity: High

ID: 500368

Version: 1.0

Type: local

Family: SCADA

Published: 5/27/2020

Updated: 5/27/2020

Risk Information

CVSS Score Source: CVE-2020-6988

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

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-2020-6988