Proton VPN TunnelVision support response.
Proton VPN TunnelVision support response.
I contacted Proton VPN about the TunnelVision exploit and I got a response. I feel great about it, thank you Proton!
Hi,
Thank you for your patience.
Our engineers have conducted a thorough analysis of this threat, reconstructed it experimentally, and tested it on Proton VPN. Please note that the attack can only be carried out if the local network itself is compromised.
Regardless, we're working on a fix for our Linux application that will provide full protection against it, and it'll be released as soon as possible.
If there's anything else that I can help you with in the meantime, please feel free to let me know.
Have a nice day!
I'm a bit confused how this is considered a new vulnerability. The IETF RFC which proposes option 121 literally states that malicious DHCP servers could be used to redirect traffic to malicious hosts, and I'm fairly confident that we learned about this exact thing in CCNA school in like 2003 (with regards to router configuration security).
I suppose the application to a VPN attack might be relatively novel?
I think the new thing is that VPN usage is fairly mainstream now. There are lots of services that advertise themselves as having the ability to hide all traffic. It's certainly news to me, as I hadn't even heard of a VPN in 2003. The researchers do say that this has been possible since 2002.
I thought that it doesn't affect linux and android.
It doesn't affect Android and Linux is the only OS with the possibility of a fix. I've seen people suppose that Android just always ignores option 121. My guess for Linux is that, because system level changes are allowed, you can modify the system to ignore option 121.
I'm not a network engineer, so I do not know this for sure. Does anyone else know more about it?
