CVE-2023-27410 : What You Need to Know

This CVE, assigned by Siemens, was published on May 9, 2023. It involves a vulnerability in SCALANCE LPE9403 (All versions < V2.1) that could lead to a denial of service attack.

Understanding CVE-2023-27410

This section will delve into the details of CVE-2023-27410, including what it is, its impact, technical details, and mitigation strategies.

What is CVE-2023-27410?

CVE-2023-27410 is a heap-based buffer overflow vulnerability found in the

edgebox_web_app

binary of SCALANCE LPE9403. This vulnerability allows an authenticated privileged attacker to crash the binary by providing a backup password longer than 255 characters.

The Impact of CVE-2023-27410

The impact of this vulnerability is that an attacker could exploit it to cause the affected binary to crash, resulting in a denial of service condition. The base severity of this vulnerability is rated as "LOW."

Technical Details of CVE-2023-27410

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in the

edgebox_web_app

binary of SCALANCE LPE9403 triggers a heap-based buffer overflow when a backup password longer than 255 characters is supplied, causing the binary to crash.

Affected Systems and Versions

The affected system is SCALANCE LPE9403, specifically all versions prior to V2.1. Users of these versions are susceptible to this vulnerability, which is considered "affected."

Exploitation Mechanism

To exploit CVE-2023-27410, an authenticated privileged attacker needs to provide a backup password longer than 255 characters to the

edgebox_web_app

binary, triggering the heap-based buffer overflow.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-27410, immediate steps should be taken in addition to implementing long-term security practices and applying necessary patches and updates.

Immediate Steps to Take

Users are advised to restrict access to the vulnerable binary and monitor for any suspicious activities that could indicate an attempted exploitation of the vulnerability.

Long-Term Security Practices

Implementing the principle of least privilege, conducting regular security audits, and providing security awareness training to personnel can help enhance the overall security posture against such vulnerabilities.

Patching and Updates

It is crucial for organizations using SCALANCE LPE9403 versions prior to V2.1 to apply the necessary patches and updates provided by Siemens to address the heap-based buffer overflow vulnerability and prevent potential denial of service attacks.