USN-4136-1: wpa_supplicant and hostapd vulnerability

wpa vulnerability

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

Ubuntu 19.04
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS

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

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 19.04: hostapd – 2:2.6-21ubuntu3.3; wpasupplicant – 2:2.6-21ubuntu3.3
Ubuntu 18.04 LTS: hostapd – 2:2.6-15ubuntu2.5; wpasupplicant – 2:2.6-15ubuntu2.5
Ubuntu 16.04 LTS: hostapd – 1:2.4-0ubuntu6.6; wpasupplicant – 2.4-0ubuntu6.6

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

CVE-2019-16275

Source: USN-4136-1: wpa_supplicant and hostapd vulnerability

지락문화예술공작단