CVE-2023-35846 Explained : Impact and Mitigation

VirtualSquare picoTCP (aka PicoTCP-NG) through 2.1 is vulnerable as it does not check the transport layer length in a frame before performing port filtering.

Understanding CVE-2023-35846

This section will cover details about the CVE-2023-35846 vulnerability.

What is CVE-2023-35846?

CVE-2023-35846 affects VirtualSquare picoTCP (aka PicoTCP-NG) through version 2.1 by not verifying the transport layer length in a frame before carrying out port filtering.

The Impact of CVE-2023-35846

The vulnerability could allow threat actors to bypass port filtering, potentially leading to unauthorized network access and data breaches.

Technical Details of CVE-2023-35846

In this section, we will delve into the technical aspects of CVE-2023-35846.

Vulnerability Description

VirtualSquare picoTCP (PicoTCP-NG) version 2.1 does not properly validate the transport layer length within a frame, opening the door to potential security risks.

Affected Systems and Versions

All versions of VirtualSquare picoTCP (PicoTCP-NG) up to and including 2.1 are vulnerable to this issue.

Exploitation Mechanism

Exploiting this vulnerability involves sending specially crafted network traffic to the target system to bypass port filtering mechanisms.

Mitigation and Prevention

This section will outline steps to mitigate and prevent the exploitation of CVE-2023-35846.

Immediate Steps to Take

Users are advised to update to a patched version of picoTCP to mitigate the vulnerability. Implementing network segmentation and access controls can also help prevent unauthorized access.

Long-Term Security Practices

Regular security training for employees, network monitoring, and keeping systems up to date with the latest security patches are essential for long-term security.

Patching and Updates

Stay informed about security updates for picoTCP and apply patches promptly to address known vulnerabilities.