Ubuntu Security Notice USN-2808-1
10th November, 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 version:
- 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
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.