Microsoft researchers will reveal four OpenVPN zero-day vulnerabilities at Black Hat 2024

OpenVPN is an open source encrypted tunnel software widely used by enterprises around the world. Many enterprises deploy VPN services on their intranets for security reasons. Employees, especially cross-regional employees, must use VPN to access the corresponding servers.

Black Hat Conference 2024 in the United States will be held from August 3 to August 8, 2024. Microsoft researchers have announced in advance that they will announce a series of security vulnerabilities called OPENX. These security vulnerabilities widely affect OpenVPN for Windows, Mac, BSD, iOS and Android.

OpenVPN itself is security-focused and operates as a complex multi-process system, thus also spanning multiple different permission levels, including the ability to interact with kernel components.

The vulnerabilities discovered by Microsoft researchers take advantage of complex system interactions and dependence on related APIs. The attack chain starts from OpenVPN's plug-in mechanism, and can later enable remote code execution and launch more attack purposes.

Details of the specific vulnerabilities have not yet been disclosed, but they include remote code execution, local privilege escalation, and kernel code execution via BYOVD, the last of which could allow an attacker to impersonate a high-privileged user to load a vulnerable, signed driver to gain access to the kernel. Level execution code.

Researchers will demonstrate these security vulnerabilities at the Black Hat Conference, analyze the details of the vulnerabilities and provide defense or mitigation solutions. However, these vulnerabilities will not be revealed until the Black Hat Conference is held.

Note: Zero-day vulnerabilities (0day) refer to vulnerabilities that have been exploited by hackers, that is, Microsoft researchers may have found evidence that hackers have exploited these vulnerabilities.