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Ubuntu Security Notice USN-3455-1

Ubuntu Security Notice USN-3455-1
Posted Oct 16, 2017
Authored by Ubuntu | Site security.ubuntu.com

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.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | 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
MD5 | a6dc13bf6c1817ca8b6b932b33c20cda

Ubuntu Security Notice USN-3455-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3455-1
October 16, 2017

wpa vulnerabilities
==========================================================================

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


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