Windows CVE-2024-38063

• CVE ID: CVE-2024-38063
• CVSS 3.1 Score: 9.8 (Critical)
• EPSS Score: Low - 0.088% (https://www.cvedetails.com/epss/CVE-2024-38063/epss-score-history.html)
• Impact: Remote Code Execution
• Affected Components: Windows TCP/IP stack
• Attack Vector: Network (Remote)

Vulnerability Details

CVE-2024-38063 is a critical vulnerability that can be exploited by sending specially crafted IPv6 packets to a target machine. This vulnerability arises from improper handling of certain IPv6 packet structures, allowing an attacker to trigger a buffer overflow. Exploiting this flaw can enable the attacker to execute arbitrary malicious code with escalated privileges, potentially gaining full control of the affected system.

The consequences of this vulnerability are severe, including unauthorized access, data theft, data breaches, and even total system compromise. Additionally, the exploit could be leveraged to establish persistent backdoors, disable critical services, or pivot to other systems within the network. The risk is further exacerbated if the target system is exposed to the internet or resides in a sensitive network environment.

Affected Versions

Client Versions:

• Windows 10 (all versions)
• Windows 11 (all versions)

Server Versions:

• Windows Server 2008 (all editions)
• Windows Server 2008 R2
• Windows Server 2012 and 2012 R2
• Windows Server 2016
• Windows Server 2019
• Windows Server 2022

Mitigations and Patching

Manual Patching:

Navigate to the following link: https://securityvulnerability.io/vulnerability/CVE-2024-38063 and scroll down to Security Updates, then find the appropiate version for your system.

Automated Patching - Windows Update:

1. Settings -> Update & Security -> Windows Update and click Check for updates

Mitigations for Business Critical / PCN Systems

In situations where a system reboot may not be practical, such as in a Process Control Network, an OT environment, or any business critical system, the following commands can be used to effectively mitigate potential risks and ensure continued operation.

Show all adapters that have IPV6 enabled:

Show-IPV6enabledAdapters

Disable IPv6 on a specific adapter:

Disable-IPV6Adapter -AdapterName "Ethernet 2"

Enable IPv6 on a specific adapter:

Enable-IPV6Adapter -AdapterName "Ethernet 2"

Disable IPv6 on all adapters:

Disable-IPV6AllAdapter

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38063
• https://securityvulnerability.io/vulnerability/CVE-2024-38063

Disclaimer

This document is intended for informational purposes only and does not create any legal obligations or guarantees. For detailed guidance, please consult the official Microsoft documentation and advisories.