CVE-2023-47346 Explained : Impact and Mitigation

This article provides insights into CVE-2023-47346, a Buffer Overflow vulnerability affecting free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0, allowing attackers to trigger a denial of service through malicious PFCP messages.

Understanding CVE-2023-47346

In this section, we will delve into the details of CVE-2023-47346 and its impact on affected systems.

What is CVE-2023-47346?

CVE-2023-47346 is a Buffer Overflow vulnerability found in free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0. It enables threat actors to disrupt services by sending specifically crafted PFCP messages.

The Impact of CVE-2023-47346

The vulnerability allows attackers to exploit free5gc, UPF, and SMF components, leading to a denial of service condition on the targeted systems, affecting their availability and performance.

Technical Details of CVE-2023-47346

This section provides a deeper dive into the technical aspects of CVE-2023-47346, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The Buffer Overflow vulnerability in free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0 arises from improper handling of PFCP messages, allowing attackers to overwhelm the systems' buffers and disrupt normal operations.

Affected Systems and Versions

free5gc version 3.3.0, UPF version 1.2.0, and SMF version 1.2.0 are confirmed to be impacted by this vulnerability, potentially affecting systems relying on these components.

Exploitation Mechanism

Exploiting CVE-2023-47346 involves crafting and sending malicious PFCP messages to the vulnerable free5gc, UPF, or SMF instances, causing them to crash or become unresponsive.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-47346, it is crucial to take immediate action and adopt long-term security measures to safeguard systems from similar vulnerabilities.

Immediate Steps to Take

Organizations should apply security patches or updates provided by the respective vendors promptly to address the Buffer Overflow vulnerability in free5gc, UPF, and SMF.

Long-Term Security Practices

Implementing robust input validation mechanisms, conducting regular security assessments, and staying informed about the latest threat intelligence can enhance the overall security posture.

Patching and Updates

Regularly monitor official sources for patches or updates released by the vendors to address CVE-2023-47346 and other security vulnerabilities effectively.