Ubuntu Security Notice 3455-1 - Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly handled WPA2. A remote attacker could use this issue with using key reinstallation attacks to obtain sensitive information. 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. Various other issues were also addressed.
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Ubuntu Security Notice USN-3455-1
October 16, 2017
wpa vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in wpa_supplicant.
Software Description:
- 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 using 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 LTS:
hostapd 2.4-0ubuntu6.2
wpasupplicant 2.4-0ubuntu6.2
Ubuntu 14.04 LTS:
hostapd 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:
https://www.ubuntu.com/usn/usn-3455-1
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
Package Information:
https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu9.1
https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu6.2
https://launchpad.net/ubuntu/+source/wpa/2.1-0ubuntu1.5