Schneider Electric PowerLogic PM5300 Series Uncontrolled Resource Consumption (CVE-2024-9409)

high Tenable OT Security Plugin ID 502677

Synopsis

The remote OT asset is affected by a vulnerability.

Description

CWE-400: An Uncontrolled Resource Consumption vulnerability exists that could cause the device to become unresponsive resulting in communication loss when a large amount of IGMP packets is present in the network.

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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Schneider Electric has identified the following remediations users can apply to reduce risk:

- PowerLogic PM5320: Version 2.4.0 of PowerLogic PM5320 includes a fix for this vulnerability.
- PowerLogic PM5340: Version 2.4.0 of PowerLogic PM5340 includes a fix for this vulnerability.
- PowerLogic PM5341: Version 2.7.0 of PowerLogic PM5341 includes a fix for this vulnerability.

If users choose not to apply the remediation provided above, Schneider Electric recommends immediately applying the following steps to reduce the risk of exploitation:

- Enable IGMP Snooping: Ensure that IGMP Snooping is enabled on the switch. This feature allows the switch to intelligently forward multicast traffic only to the necessary ports where interested hosts reside. It prevents unnecessary flooding of multicast traffic across all ports, thereby enhancing network efficiency and minimizing unnecessary load on network resources.
- Configure VLAN Interface Settings: Set up VLAN interface settings on the switch. It's important to have distinct configurations for each VLAN to ensure proper IGMP operation.
- Multicast Filtering: Use IGMP filtering to control the propagation of IGMP traffic through the network. This involves configuring filters on a switch virtual interface (SVI), per-port, or per-port per-VLAN basis. Multicast filtering helps manage IGMP snooping and controls multicast traffic forwarding effectively.

Schneider Electric strongly recommend the following industry cybersecurity best practices:

- Locate control and safety system networks and remote devices behind firewalls and isolate them from the business network.
- Install physical controls so no unauthorized personnel can access your industrial control and safety systems, components, peripheral equipment, and networks.
- Place all controllers in locked cabinets and never leave them in the "Program" mode.
- Never connect programming software to any network other than the network intended for that device.
- Scan all methods of mobile data exchange with the isolated network such as CDs, USB drives, etc. before use in the terminals or any node connected to these networks.
- Never allow mobile devices that have connected to any other network besides the intended network to connect to the safety or control networks without proper sanitation.
- Minimize network exposure for all control system devices and systems and ensure that they are not accessible from the Internet.
- When remote access is required, use secure methods, such as virtual private networks (VPNs). Recognize that VPNs may have vulnerabilities and should be updated to the most current versionavailable. Also, understand that VPNs are only as secure as the connected devices.

For more information refer to the Schneider Electric Recommended Cybersecurity Best Practices document and the associated Schneider Electric Security Notification SEVD-2024-317-01 in PDF and CSAF.

Plugin Details

Severity: High

ID: 502677

Version: 1.5

Type: remote

Family: Tenable.ot

Published: 11/19/2024

Updated: 12/18/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2024-9409

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/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:powerlogic_pm5341_firmware, cpe:/o:schneider-electric:powerlogic_pm5340_firmware, cpe:/o:schneider-electric:powerlogic_pm5320_firmware

Required KB Items: Tenable.ot/Schneider

Exploit Ease: No known exploits are available

Patch Publication Date: 11/13/2024

Vulnerability Publication Date: 11/13/2024

Reference Information

CVE: CVE-2024-9409

CWE: 400

ICSA: 24-326-06

Detections

Analytics