CVE-2023-4518 : Security Advisory and Response

This CVE record was published by Hitachi Energy on December 1, 2023, revealing a vulnerability identified as CVE-2023-4518. The vulnerability affects the Relion670 product line with various versions, potentially leading to a device reboot due to input validation issues in GOOSE messages.

Understanding CVE-2023-4518

This section delves into the specifics of CVE-2023-4518, shedding light on its nature and impact in the cybersecurity landscape.

What is CVE-2023-4518?

CVE-2023-4518 points towards a vulnerability resulting from inadequate input validation in GOOSE messages within specific versions of the Relion670 product series by Hitachi Energy. The flaw allows attackers to trigger unexpected reboots by sending out-of-range values that the device processes.

The Impact of CVE-2023-4518

The impact of CVE-2023-4518 can be significant, particularly in industrial settings where the affected devices are utilized. An attacker exploiting this vulnerability could potentially disrupt operations by causing targeted devices to reboot unexpectedly, leading to downtime and operational challenges.

Technical Details of CVE-2023-4518

In this section, we explore the technical aspects of CVE-2023-4518, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from improper input validation within GOOSE messages, which, when processed by the IEDs in the affected Relion670 series devices, can result in device reboots. Attackers can leverage this flaw by configuring goose receiving blocks to exploit the vulnerability.

Affected Systems and Versions

The impacted systems include various versions of the Relion670 product line by Hitachi Energy. These versions include Relion 670 series version 2.2.0 to version 2.2.5, as well as Relion 670/650/SAM600-IO series versions 2.2.1 to 2.2.5.

Exploitation Mechanism

To exploit CVE-2023-4518, attackers need to send out-of-range values within GOOSE messages to the affected devices. By configuring goose receiving blocks, threat actors can trigger the device to reboot, potentially causing disruption or denial of service.

Mitigation and Prevention

Safeguarding against CVE-2023-4518 requires a comprehensive approach that includes immediate actions and long-term security practices.

Immediate Steps to Take

Organizations using the affected Relion670 devices should consider implementing security measures promptly. This may include updating device configurations to mitigate the vulnerability and monitoring for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

In the long run, organizations should prioritize security best practices such as regular security assessments, network segmentation, access control measures, and employee training to enhance overall cybersecurity resilience and protect against similar vulnerabilities in the future.

Patching and Updates

Hitachi Energy may release patches or updates to address CVE-2023-4518. Organizations should actively monitor for these patches and apply them promptly to mitigate the risk posed by the vulnerability and ensure the secure operation of their systems.