[USN-4136-2] wpa_supplicant and hostapd vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Wed Sep 18 14:48:54 UTC 2019
Ubuntu Security Notice USN-4136-2
September 18, 2019
wpa, wpasupplicant vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM
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
- wpasupplicant: client support for WPA and WPA2
USN-4136-1 fixed a vulnerability in wpa_supplicant. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
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 14.04 ESM:
Ubuntu 12.04 ESM:
After a standard system update you need to reboot your computer to make
all the necessary changes.
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