[USN-3745-1] wpa_supplicant and hostapd vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Mon Aug 20 15:47:33 UTC 2018

Ubuntu Security Notice USN-3745-1
August 20, 2018

wpa vulnerability

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS


wpa_supplicant and hostapd could be made to expose sensitive
information if it received a crafted message.

Software Description:
- wpa: client support for WPA and WPA2


It was discovered that wpa_supplicant and hostapd incorrectly handled
certain messages. An attacker could possibly use this to access
sensitive information.

Update instructions:

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

Ubuntu 18.04 LTS:
  hostapd                         2:2.6-15ubuntu2.1
  wpasupplicant                   2:2.6-15ubuntu2.1

Ubuntu 16.04 LTS:
  hostapd                         2.4-0ubuntu6.3
  wpasupplicant                   2.4-0ubuntu6.3

Ubuntu 14.04 LTS:
  hostapd                         2.1-0ubuntu1.6
  wpasupplicant                   2.1-0ubuntu1.6

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


Package Information:
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