wpa, wpasupplicant vulnerabilities

16 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 versions:

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.

References

• CVE-2015-4141
• CVE-2015-4142
• CVE-2015-4143
• CVE-2015-4144
• CVE-2015-4145
• CVE-2015-4146