Port Shadow Attack Allows VPN Traffic Interception, Redirection

July 18, 2024 at 09:03AM Researchers from several universities have identified a vulnerability, named Port Shadow (CVE-2021-3773), that allows threat actors to exploit VPNs to launch man-in-the-middle attacks, intercepting and redirecting traffic. This affects OpenVPN, WireGuard, and OpenConnect on Linux or FreeBSD. Mitigation involves specific firewall rules, and end users are advised to connect to … Read more