1. Ubuntu Security Notices
  2. USN-3969-1

USN-3969-1: wpa_supplicant and hostapd vulnerability

Publication date

7 May 2019

Overview

wpa_supplicant and hostapd could be made to crash if they received specially crafted network traffic.

Releases

Packages

  • wpa - client support for WPA and WPA2

Details

It was discovered that wpa_supplicant and hostapd incorrectly handled
unexpected fragments when using EAP-pwd. A remote attacker could possibly
use this issue to cause a denial of service.

It was discovered that wpa_supplicant and hostapd incorrectly handled
unexpected fragments when using EAP-pwd. A remote attacker could possibly
use this issue to cause a denial of service.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.04 disco hostapd –  2:2.6-21ubuntu3.1
wpasupplicant –  2:2.6-21ubuntu3.1
18.10 cosmic hostapd –  2:2.6-18ubuntu1.2
wpasupplicant –  2:2.6-18ubuntu1.2
18.04 bionic hostapd –  2:2.6-15ubuntu2.3
wpasupplicant –  2:2.6-15ubuntu2.3
16.04 xenial hostapd –  1:2.4-0ubuntu6.5
wpasupplicant –  2.4-0ubuntu6.5

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References

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