CVE-2022-28328 : Security Advisory and Response
Discover the impact of CVE-2022-28328 on Siemens SCALANCE devices. Explore the vulnerability description, affected systems, exploitation method, and mitigation steps.
A vulnerability has been identified in SCALANCE W1788-1 M12, SCALANCE W1788-2 EEC M12, SCALANCE W1788-2 M12, SCALANCE W1788-2IA M12 devices due to improper handling of malformed Multicast LLC frames, potentially leading to a denial of service attack.
Understanding CVE-2022-28328
This CVE affects specific Siemens SCALANCE devices, making them susceptible to a denial of service condition if exploited.
What is CVE-2022-28328?
CVE-2022-28328 is a vulnerability found in SCALANCE W1788-1 M12, W1788-2 EEC M12, W1788-2 M12, and W1788-2IA M12 devices with versions lower than V3.0.0. The issue arises due to the improper handling of malformed Multicast LLC frames.
The Impact of CVE-2022-28328
Exploiting this vulnerability could allow an attacker to trigger a denial of service scenario, disrupting the normal operation of the affected devices and potentially affecting the network availability.
Technical Details of CVE-2022-28328
Vulnerability Description
The vulnerability stems from the devices' inability to correctly manage malformed Multicast LLC frames, which can be leveraged by an attacker to orchestrate a denial of service attack.
Affected Systems and Versions
The impacted devices include SCALANCE W1788-1 M12, W1788-2 EEC M12, W1788-2 M12, and W1788-2IA M12 with versions lower than V3.0.0.
Exploitation Mechanism
By crafting and sending malformed Multicast LLC frames to the vulnerable devices, an attacker can exploit this weakness and potentially cause a denial of service.
Mitigation and Prevention
Immediate Steps to Take
Siemens recommends updating the affected devices to version V3.0.0 or higher to mitigate the risk associated with this vulnerability. Additionally, network segmentation and access control lists can help prevent unauthorized access.
Long-Term Security Practices
Regular security assessments, network monitoring, and keeping systems up to date with the latest patches and firmware updates are essential for maintaining a secure environment.
Patching and Updates
Ensure timely installation of security patches and firmware updates provided by Siemens to address known vulnerabilities and enhance the security posture of SCALANCE devices.