USN-4136-1: wpa_supplicant and hostapd vulnerability
wpa vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
wpa_supplicant could be made to be disconnected and require reconnection to the
network if it received a specially crafted management frame.
Software Description
- wpa – client support for WPA and WPA2
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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 19.04
- hostapd – 2:2.6-21ubuntu3.3
- wpasupplicant – 2:2.6-21ubuntu3.3
- Ubuntu 18.04 LTS
- hostapd – 2:2.6-15ubuntu2.5
- wpasupplicant – 2:2.6-15ubuntu2.5
- Ubuntu 16.04 LTS
- hostapd – 1:2.4-0ubuntu6.6
- wpasupplicant – 2.4-0ubuntu6.6
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
Source: USN-4136-1: wpa_supplicant and hostapd vulnerability
