Abstract Protecting network protocols within an encrypted tunnel, using technologies such as Virtual Private Networks (VPNs), is increasingly important to millions of users needing solutions to evade censorship or protect their traffic against in/on-path observers/attackers. In this paper, we present a series of attacks from two threat models: an attacker that can inject spoofed packets into the network stack of a VPN client (called client-side), and an attacker that can spoof packets on the ...|
In November of last year we reported a vulnerability that allowed to a network adjacent attacker to make inferences about active connections inside VPN-tunneled connections and inject data to reset or hijack these connections. This vulnerability was assigned CVE-2019-14899 and affected Apple, Android, and many Linux and BSD systems. You can read about this in detail in our post from May. This post describes a new attack which takes advantage of the insight gained from the previous attack, but...|
Virtual Private Networks (VPNs) are often advertised as a means to provide enhanced privacy for online browsing. VPN protocols, however, were not designed fo...| www.breakpointingbad.com
Credit: Wikipedia Introduction OpenVPN’s use of Netfilter makes it susceptible to several attacks that cancause denial-of-service, deanonymization of client...| www.breakpointingbad.com