CVE-2022-47375 : What You Need to Know

A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPUs, SINAMICS S120, and SIPLUS S7-400 CPUs by Siemens. The vulnerability leads to a denial of service condition due to incorrect handling of long file names.

Understanding CVE-2022-47375

This CVE identifies a buffer overflow vulnerability in various Siemens products that may result in a denial of service if exploited.

What is CVE-2022-47375?

The affected Siemens products fail to manage long file names properly, potentially enabling a buffer overflow. This flaw could be exploited by an attacker to trigger a denial of service incident.

The Impact of CVE-2022-47375

The impact of this vulnerability is rated as HIGH, with a CVSS v3.1 base score of 7.5. Exploitation could lead to a denial of service condition affecting the availability of the affected devices.

Technical Details of CVE-2022-47375

This section provides specific technical details regarding the vulnerability.

Vulnerability Description

The vulnerability arises due to the mishandling of long file names, which can be exploited to create a buffer overflow, potentially resulting in a denial of service situation.

Affected Systems and Versions

The affected products include SIMATIC PC-Station Plus, various models of SIMATIC S7-400 CPUs, SINAMICS S120, and SIPLUS S7-400 CPUs with specific versions reported in the CVE details.

Exploitation Mechanism

Attackers could craft malicious inputs containing long file names to trigger the buffer overflow condition, impacting the device's availability.

Mitigation and Prevention

To address CVE-2022-47375, consider the following mitigation strategies.

Immediate Steps to Take

Siemens may provide patches or updates to address the buffer overflow vulnerability. Stay informed about security bulletins and updates from Siemens.

Long-Term Security Practices

Employ network segmentation and access controls to limit exposure of vulnerable devices.
Regularly monitor and audit device activity for any signs of unauthorized access or exploitation.

Patching and Updates

Apply patches or updates provided by Siemens promptly to mitigate the vulnerability and enhance the security of the affected products.