USN-4136-2: wpa_supplicant and hostapd vulnerability
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.
References
Source: USN-4136-2: wpa_supplicant and hostapd vulnerability
