[USN-4136-1] wpa_supplicant and hostapd vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Wed Sep 18 14:01:27 UTC 2019
Ubuntu Security Notice USN-4136-1
September 18, 2019
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
wpa_supplicant could be made to be disconnected and require reconnection to the
network if it received a specially crafted management frame.
- wpa: client support for WPA and WPA2
It was discovered that wpa_supplicant incorrectly handled certain management
frames. An attacker could possibly use this issue to cause a denial of service.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
Ubuntu 16.04 LTS:
After a standard system update you need to reboot your computer to make
all the necessary changes.
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