Tag Archives: TCPIP

Progress in exploitation of Remote Code Execution – Windows TCP/IP IPv6 (CVE-2024-38063)

Progress in exploitation of Remote Code Execution - Windows TCP/IP IPv6 (CVE-2024-38063)

Progress in exploitation of Remote Code Execution – Windows TCP/IP IPv6 (CVE-2024-38063). The vulnerability is from the August Patch Tuesday. 2 weeks ago I already wrote why it is potentially dangerous. Now the danger has increased significantly:

🔻 On August 24, a PoC of the exploit appeared on GitHub. There is a video with the launch of a small python script (39 lines), causing Windows to crash with the error “KERNEL SECURITY CHECK FAILURE”. Looks more like DoS than RCE. But this is only for now.

🔻 Well-known researcher Marcus Hutchins posted a blog post titled “CVE-2024-38063 – Remotely Exploiting The Kernel Via IPv6“. It describes the technical details of exploiting the vulnerability.

The probability that the vulnerability will be exploited in the wild has increased significantly.

❗️ Check if the vulnerability is patched or increase the priority of the fix if it is not yet.

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Remote Code Execution – Windows TCP/IP IPv6 (CVE-2024-38063)

Remote Code Execution - Windows TCP/IP IPv6 (CVE-2024-38063)

Remote Code Execution – Windows TCP/IP IPv6 (CVE-2024-38063). Vulnerability from August Microsoft Patch Tuesday. No exploits or signs of exploitation in the wild have yet been discovered, but the description of the vulnerability looks scary. 😱

An unauthenticated attacker sends IPv6 packets to a Windows computer and this results in remote code execution. CVSS 9.8, “Exploitation More Likely”.

🔹 If IPv6 is disabled, the vulnerability is not exploited. But by default it is enabled. 😏
🔹 Blocking IPv6 on the local Windows firewall will not prevent exploitation (exploitation occurs before the packet is processed by the firewall). 🤷‍♂️

The vulnerability was found by experts from the Chinese information security company Cyber ​​Kunlun. When technical details and exploits for the vulnerability appear, it may be very critical and “wormable”. 🪱

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