USN-2383-1: wpa_supplicant vulnerability

14 October 2014

wpa, wpasupplicant vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


wpa_supplicant could be made to run programs if it received specially crafted network traffic.

Software Description

  • wpa - client support for WPA and WPA2
  • wpasupplicant - client support for WPA and WPA2


Jouni Malinen discovered that the wpa_cli tool incorrectly sanitized strings when being used with action scripts. A remote attacker could possibly use this issue to execute arbitrary commands.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
wpasupplicant - 2.1-0ubuntu1.1
Ubuntu 12.04 LTS
wpasupplicant - 0.7.3-6ubuntu2.3
Ubuntu 10.04 LTS
wpasupplicant - 0.6.9-3ubuntu3.2

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.