"Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for man-in-the-middle attackers to hijack TCP sessions via a blind in-window attack."
To solve the issue update your kernel now. If you are unable to, here is a temporary fix for systemctl (botnet), based systems:
Append the following to /etc/sysctl.conf net.ipv4.tcp_challenge_ack_limit = 999999999 sysctl -p to activate the new rule (As root)
Don't let the evil mitm maki spy on you. If you have the linux 3.6 kernel and above check your system now.
This is the most autistic post I've ever seen on this board.
Ryan Cooper
well give him credit for making an image to go with it. it's hard work being that much of a weeb
Ian Carter
eh I'm guessing you are new here?
Eli Taylor
>someone made that image Anyways, it's not like it fucking matters since web sites you're connecting to are vulnerable.
Isaac Young
Thank you OP
Andrew Wood
>Maki-in-the-middle attack I think we should adopt this as standard for all security and crypto discussions on Sup Forums
Liam Rogers
upgraded over a week ago.
Aaron Hernandez
>sid >4.6.4 i thought sid was kept up to date, not only did 4.7 come out last month, it's not even the latest 4.6.x (which is 4.6.6)
Jaxon Bailey
>before 4.7 >tfw my only Linux devices are stuck at 2.x and 3.18
Noah Barnes
That's honestly one of the best images I've seen on Sup Forums
Easton Collins
Hijacking isn't spying and if you encrypt shit all this does is fuck up your TCP session.
Dumbass.
Adam Nguyen
2.x is fine and 3.18 however is vulnerable if you don't raise that challenge ack limit
Andrew Lee
Who /4.8.0-rc1+/ here?
Julian Collins
:^)
William Cox
still on 4.7 i don't like rebooting every week.
Jace Bailey
>linux arch kys and your stupid piece of shit distro
Colton Diaz
...
Luis Jones
Goddamnit, the zen kernel hasn't updated yet.
Jack Martin
how do I know this site isn't hijacked? and all those links and commands will make things worse
Robert Gutierrez
Lol Windows 7 forever
Samuel Hughes
>windows Enjoy you're security vulnerabilites and viruses, cuck :^):^):^):^):^):^):^):^))))))))))))))))
Justin Rivera
ok.
Brandon Anderson
...
Cameron Lewis
It's cuter than Mallory. I'm tempted, but if I don't stick to the standard terminology my papers will be even more confusing.
I don't have much input for the thread, except this is another bug in the TCP RFCs, not in Linux as such (but Linux is having to work around it and no-one else is, because no-one else even implemented this RFC).
I'm personally of the impression, having studied it for a while, that we should throw TCP into the fire and implement our (encrypted) connection layers over UDP, with hole punching, and use TCP wrapping only when absolutely unavoidable. Trying to secure connections in any way without an authentication layer and an encryption layer is ultimately doomed no matter which way you slice it.
We can learn from TCP's mistakes, and all the good things it brought us too, as it is often said those who disregard them are doomed to reimplement those mistakes. But there's no fixing it.
>CAPTCHA: select all images with tea Excellent idea, botnet, thank you so much.
Cooper Anderson
Linux alarmpi 4.4.16-2-ARCH #1 SMP Wed Aug 10 20:12:45 MDT 2016 armv7l GNU/Linux
