========================================================================= Ubuntu Security Notice USN-4734-2 February 16, 2021 wpa vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 14.04 ESM Summary: Several security issues were fixed in wpa_supplicant and hostapd. Software Description: - wpa: client support for WPA and WPA2 Details: USN-4734-1 fixed several vulnerabilities in wpa_supplicant. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that wpa_supplicant did not properly handle P2P (Wi-Fi Direct) group information in some situations, leading to a heap overflow. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-0326) It was discovered that hostapd did not properly handle UPnP subscribe messages in some circumstances. An attacker could use this to cause a denial of service. (CVE-2020-12695) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM: hostapd 1:2.1-0ubuntu1.7+esm3 wpasupplicant 2.1-0ubuntu1.7+esm3 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://usn.ubuntu.com/4734-2 https://usn.ubuntu.com/4734-1 CVE-2020-12695, CVE-2021-0326