Ubuntu Security Notice USN-2650-1
16th June, 2015
wpa, wpasupplicant vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
wpa_supplicant and hostapd could be made to crash if they received
specially crafted network traffic.
Software description
- wpa
– client support for WPA and WPA2 - wpasupplicant
– client support for WPA and WPA2
Details
Kostya Kortchinsky discovered multiple flaws in wpa_supplicant and hostapd.
A remote attacker could use these issues to cause wpa_supplicant or hostapd
to crash, resulting in a denial of service. (CVE-2015-4141, CVE-2015-4142,
CVE-2015-4143, CVE-2015-4144, CVE-2015-4145, CVE-2015-4146)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.04:
-
hostapd
2.1-0ubuntu7.2
-
wpasupplicant
2.1-0ubuntu7.2
- Ubuntu 14.10:
-
hostapd
2.1-0ubuntu4.2
-
wpasupplicant
2.1-0ubuntu4.2
- Ubuntu 14.04 LTS:
-
hostapd
2.1-0ubuntu1.3
-
wpasupplicant
2.1-0ubuntu1.3
- Ubuntu 12.04 LTS:
-
wpasupplicant
0.7.3-6ubuntu2.4
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.