Ubuntu 20.10 USN-4757-1 High: wpa_supplicant Denial Of Service

ubuntu

March 3, 2021

wpa_supplicant could be made to crash or run programs if it received specially crafted network traffic.

Summary

wpa_supplicant could be made to crash or run programs if it received

specially crafted network traffic.

Software Description:

- wpa: client support for WPA and WPA2

Details:

It was discovered that wpa_supplicant did not properly handle P2P

(Wi-Fi Direct) provision discovery requests in some situations. A

physically proximate attacker could use this to cause a denial of service

or possibly execute arbitrary code.

Topics Covered

security advisory denial of service Ubuntu high network traffic ubuntu wpa_supplicant wpa

Update Instructions

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

Ubuntu 20.10:
  wpasupplicant                   2:2.9-1ubuntu8.2

Ubuntu 20.04 LTS:
  wpasupplicant                   2:2.9-1ubuntu4.3

Ubuntu 18.04 LTS:
  wpasupplicant                   2:2.6-15ubuntu2.8

Ubuntu 16.04 LTS:
  wpasupplicant                   2.4-0ubuntu6.8

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