wpa, wpasupplicant vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM
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
- wpasupplicant - client support for WPA and WPA2
Details
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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 14.04 ESM
- hostapd - 1:2.1-0ubuntu1.7+esm2
- wpasupplicant - 2.1-0ubuntu1.7+esm2
- Ubuntu 12.04 ESM
- wpasupplicant - 0.7.3-6ubuntu2.5
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.