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Rockwell Logix Controllers Unprotected Alternate Channel (CVE-2024-6242)
high Tenable OT Security Plugin ID 502361
Synopsis
The remote OT asset is affected by a vulnerability.Description
A vulnerability exists in the affected products that allows a threat actor to bypass the Trusted Slot feature in a ControlLogix controller.If exploited on any affected module in a 1756 chassis, a threat actor could potentially execute CIP commands that modify user projects and/or device configuration on a Logix controller in the chassis.
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.Rockwell Automation recommends users update the Logix controllers to the following:
ControlLogix 5580 (1756-L8z): Update to versions V32.016, V33.015, V34.014, V35.011 and later.
GuardLogix 5580 (1756-L8zS): Update to versions V32.016, V33.015, V34.014, V35.011 and later.
1756-EN4TR: Update to versions V5.001 and later.
1756-EN2T Series D, 1756-EN2F Series C, 1756-EN2TR Series C, 1756-EN3TR Series B, and 1756-EN2TP Series A: Update to version V12.001 and later
The products 1756-EN2T Series A/B/C, 1756-EN2F Series A/B, 1756-EN2TR Series A/B, and 1756-EN3TR Series B do not have a fix available. Users can upgrade to Series D to remediate this vulnerability.
Users that are using the affected firmware and who are not able to upgrade to one of the corrected versions are encouraged to apply the following mitigation and security best practices, where possible:
Limit the allowed CIP commands on controllers by setting the mode switch to the RUN position.
See Also
http://www.nessus.org/u?97871567
https://www.cisa.gov/news-events/ics-advisories/icsa-24-214-09
Plugin Details
Severity: High
ID: 502361
Version: 1.4
Type: remote
Family: Tenable.ot
Published: 8/8/2024
Updated: 9/4/2024
Supported Sensors: Tenable OT Security
Risk Information
VPR
Risk Factor: High
Score: 8.1
CVSS v3
Risk Factor: High
Base Score: 8.4
Temporal Score: 7.3
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:rockwellautomation:1756-en2t_series_d_firmware, cpe:/o:rockwellautomation:1756-en2tk_series_a_firmware, cpe:/o:rockwellautomation:1756-en2tk_series_c_firmware, cpe:/o:rockwellautomation:controllogix_5580_firmware, cpe:/o:rockwellautomation:1756-en2fk_series_c_firmware, cpe:/o:rockwellautomation:1756-en2tk_series_d_firmware, cpe:/o:rockwellautomation:guardlogix_5580_firmware, cpe:/o:rockwellautomation:1756-en2tr_series_c_firmware, cpe:/o:rockwellautomation:1756-en4tr_firmware, cpe:/o:rockwellautomation:1756-en3tr_series_a_firmware, cpe:/o:rockwellautomation:1756-en2tr_series_a_firmware, cpe:/o:rockwellautomation:1756-en3tr_series_b_firmware, cpe:/o:rockwellautomation:1756-en2f_series_b_firmware, cpe:/o:rockwellautomation:1756-en2tr_series_b_firmware, cpe:/o:rockwellautomation:1756-en2tp_series_a_firmware, cpe:/o:rockwellautomation:1756-en2tk_series_b_firmware, cpe:/o:rockwellautomation:1756-en2t_series_b_firmware, cpe:/o:rockwellautomation:1756-en2fk_series_a_firmware, cpe:/o:rockwellautomation:1756-en2t_series_a_firmware, cpe:/o:rockwellautomation:1756-en2f_series_a_firmware, cpe:/o:rockwellautomation:1756-en2fk_series_b_firmware, cpe:/o:rockwellautomation:1756-en2t_series_c_firmware, cpe:/o:rockwellautomation:1756-en2f_series_c_firmware
Required KB Items: Tenable.ot/Rockwell
Exploit Ease: No known exploits are available
Patch Publication Date: 8/1/2023
Vulnerability Publication Date: 8/1/2024
Reference Information
CVE: CVE-2024-6242