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Tuesday, October 24, 2017

How to tell if my ubuntu is protected against the KRACK attack ?

How can one make sure that one's ubuntu is protected against the infamous KRACK attack, that newly discovered WPA2 security flaw ? 

Well, according to USN-3455-1, the updates are available. All One needs to do is "After a standard system update you need to reboot your computer to make all the necessary changes."

And how can one be sure that everything is ok ?
After the: sudo apt-get update && sudo apt-get upgrade
and the following reboot-
1)check your version by cat /etc/lsb-release
2)check your installation history of wpasupplicant and hostapd  by-
sudo apt-get changelog wpasupplicant
sudo apt-get changelog hostapd

3) and if you are hysterical enough, verify the currently installed versions of hostapd and wpasupplicant by:
sudo apt-cache policy hostapd
sudo apt-cache policy wpasupplicant

(The USN details the relevant package version you wish to see at this stage). 

Further reading