Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-4136-2: wpa_supplicant and hostapd vulnerability

18 September 2019

wpa_supplicant could be made to be disconnected and require reconnection to the network if it received a specially crafted management frame.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

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

Details

USN-4136-1 fixed a vulnerability in wpa_supplicant. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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

References

Related notices

  • USN-4136-1: wpagui, wpasupplicant, hostapd, wpasupplicant-udeb, wpa