USN-4734-2: wpa_supplicant and hostapd vulnerabilities

Releases

• Ubuntu 14.04 ESM

Packages

• 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

• 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

• CVE-2021-0326
• CVE-2020-12695

Related notices

• USN-4734-1: wpagui, wpasupplicant, wpa, hostapd, wpasupplicant-udeb
• USN-4494-1: gir1.2-gupnp-1.2, libgupnp-doc, gupnp, libgupnp-1.2-dev, libgupnp-1.2-0
• USN-4722-1: minidlna