CVE-2023-0667 : Vulnerability Insights and Analysis

This CVE record, assigned by AHA, was published on June 7, 2023. It pertains to a vulnerability in Wireshark, specifically affecting versions 4.0.5 and earlier. The vulnerability, identified as a heap-based buffer overflow, poses a risk of code execution when processing malicious MSMMS packets in certain configurations.

Understanding CVE-2023-0667

This section delves into the specifics of CVE-2023-0667, from the vulnerability details to its potential impact.

What is CVE-2023-0667?

The vulnerability in Wireshark version 4.0.5 and prior arises from a failure to validate the length within attacker-crafted MSMMS packets. This oversight can lead to a heap-based buffer overflow, ultimately opening the door to potential code execution within the Wireshark process.

The Impact of CVE-2023-0667

The impact of this vulnerability, as categorized under CAPEC-100 Overflow Buffers, can be severe. Malicious actors could exploit the buffer overflow to execute arbitrary code, compromising the security and integrity of the affected system.

Technical Details of CVE-2023-0667

In this section, we explore the technical aspects of the vulnerability, including its description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Wireshark version 4.0.5 and earlier stems from a lack of validation in MSMMS packet length, enabling a heap-based buffer overflow. This flaw is critical as it could be leveraged by threat actors to gain unauthorized access and execute malicious code.

Affected Systems and Versions

Wireshark versions 4.0.5 and previous, along with versions 3.6.13 and earlier, are impacted by this vulnerability. Users operating these versions are at risk of falling victim to potential exploits leveraging the heap-based buffer overflow.

Exploitation Mechanism

The vulnerability can be exploited by injecting specially crafted MSMMS packets into Wireshark, capitalizing on the lack of proper length validation. This could trigger a heap-based buffer overflow, paving the way for unauthorized code execution within the Wireshark process.

Mitigation and Prevention

To safeguard systems against CVE-2023-0667, prompt action is crucial. Here are some mitigation strategies and preventive measures to consider.

Immediate Steps to Take

Users should update Wireshark to a patched version that addresses the heap-based buffer overflow vulnerability.
Implement network segmentation and access controls to limit potential attack surfaces.

Long-Term Security Practices

Maintain regular security audits and vulnerability assessments to promptly detect and address potential threats.
Educate users on safe security practices and the importance of keeping software up to date.

Patching and Updates

Stay informed about security bulletins and updates from Wireshark to quickly apply patches for known vulnerabilities.
Regularly monitor security advisories and alerts related to Wireshark to stay ahead of emerging threats.