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Ubuntu Security Notice USN-2808-1
November 10, 2015

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

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 15.10
– Ubuntu 15.04
– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in wpa_supplicant and hostapd.

Software Description:
– wpa: client support for WPA and WPA2

Details:

It was discovered that wpa_supplicant incorrectly handled WMM Sleep Mode
Response frame processing. A remote attacker could use this issue to
perform broadcast/multicast packet injections, or cause a denial of
service. (CVE-2015-5310)

It was discovered that wpa_supplicant and hostapd incorrectly handled
certain EAP-pwd messages. A remote attacker could use this issue to cause a
denial of service. (CVE-2015-5314, CVE-2015-5315)

It was discovered that wpa_supplicant incorrectly handled certain EAP-pwd
Confirm messages. A remote attacker could use this issue to cause a
denial of service. This issue only applied to Ubuntu 15.10. (CVE-2015-5316)

Update instructions:

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

Ubuntu 15.10:
hostapd 2.4-0ubuntu3.2
wpasupplicant 2.4-0ubuntu3.2

Ubuntu 15.04:
hostapd 2.1-0ubuntu7.3
wpasupplicant 2.1-0ubuntu7.3

Ubuntu 14.04 LTS:
hostapd 2.1-0ubuntu1.4
wpasupplicant 2.1-0ubuntu1.4

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

References:
http://www.ubuntu.com/usn/usn-2808-1
CVE-2015-5310, CVE-2015-5314, CVE-2015-5315, CVE-2015-5316

Package Information:
https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu3.2
https://launchpad.net/ubuntu/+source/wpa/2.1-0ubuntu7.3
https://launchpad.net/ubuntu/+source/wpa/2.1-0ubuntu1.4

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