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sharing my simple wireguard kill-switch for Linux
(lemmings.world)
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this post was submitted on 09 May 2024
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Oh. It doesn't work with WireGuard then. It probably works with garbage. Thank you.
I am afraid you are still a bit misled; WireGuard is exactly what they use for the demo video. In general the underlying protocol does not matter, since the vulnerability is about telling the system to direct the packages to the attacker, completely bypassing the VPN.
That "vulnerability" seems more like a case of "people who use hostile networks have not considered which features that work as designed should be disabled in their use case".
Does it matter?
This is a vulnerability anyway and we should be take care of.
It does matter if people now advocate to routinely disable useful features by default because they are a problem for their particular use case.
what features are you talking about?
The ability to set static routes via DHCP server or for that matter the ability to remote boot systems via DHCP server which has similar problems if you can't trust the DHCP server.
I see what you mean now. I wouldn't advocate for people to disable DHCP features either. It should be the VPN provider's responsibility to provide a proper VPN client that mitigates attacks like these.
Using untrusted networks is quite common, like coffee shop wifi or airport wifi.