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USN-3745-1: wpa_supplicant and hostapd vulnerability

20 August 2018

wpa_supplicant and hostapd could be made to expose sensitive information if it received a crafted message.



  • wpa - client support for WPA and WPA2


It was discovered that wpa_supplicant and hostapd incorrectly handled certain
messages. An attacker could possibly use this to access sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

After a standard system update you need to reboot your computer to make
all the necessary changes.