USN-3455-1: wpa_supplicant and hostapd vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• wpa - client support for WPA and WPA2

Details

Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly
handled WPA2. A remote attacker could use this issue with key
reinstallation attacks to obtain sensitive information. (CVE-2017-13077,
CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081,
CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088)

Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled
invalid characters in passphrase parameters. A remote attacker could use
this issue to cause a denial of service. (CVE-2016-4476)

Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled
invalid characters in passphrase parameters. A local attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2016-4477)

Update instructions

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

Ubuntu 17.04

• hostapd - 2.4-0ubuntu9.1
• wpasupplicant - 2.4-0ubuntu9.1

Ubuntu 16.04

• hostapd - 1:2.4-0ubuntu6.2
• wpasupplicant - 2.4-0ubuntu6.2

Ubuntu 14.04

• hostapd - 1:2.1-0ubuntu1.5
• wpasupplicant - 2.1-0ubuntu1.5

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

References

• CVE-2016-4476
• CVE-2016-4477
• CVE-2017-13077
• CVE-2017-13078
• CVE-2017-13079
• CVE-2017-13080
• CVE-2017-13081
• CVE-2017-13082
• CVE-2017-13086
• CVE-2017-13087
• CVE-2017-13088

Related notices

• USN-3505-1