Ubuntu Security Notices
USN-3969-2

USN-3969-2: wpa_supplicant and hostapd vulnerability

Publication date

9 May 2019

Overview

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

Releases

14.04 LTS

Packages

wpa - client support for WPA and WPA2

Details

USN-3969-1 fixed a vulnerability in wpa_supplicant and hostapd. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory 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.

USN-3969-1 fixed a vulnerability in wpa_supplicant and hostapd. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory 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.

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
14.04 trusty	hostapd – 2.1-0ubuntu1.7+esm1
14.04 trusty	wpasupplicant – 2.1-0ubuntu1.7+esm1

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References

CVE-2019-11555

CVE-2019-11555

USN-3969-1

USN-3969-1