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Ubuntu Security Notice USN-3969-1

Ubuntu Security Notice USN-3969-1
Posted May 7, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3969-1 - It was discovered that wpa_supplicant and hostapd incorrectly handled unexpected fragments when using EAP-pwd. A remote attacker could possibly use this issue to cause a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2019-11555
MD5 | 86ce2f1984619a363fd0eb24696b6070

Ubuntu Security Notice USN-3969-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3969-1
May 07, 2019

wpa vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 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

Details:

It was discovered that wpa_supplicant and hostapd incorrectly handled
unexpected fragments when using EAP-pwd. A remote attacker could possibly
use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 19.04:
hostapd 2:2.6-21ubuntu3.1
wpasupplicant 2:2.6-21ubuntu3.1

Ubuntu 18.10:
hostapd 2:2.6-18ubuntu1.2
wpasupplicant 2:2.6-18ubuntu1.2

Ubuntu 18.04 LTS:
hostapd 2:2.6-15ubuntu2.3
wpasupplicant 2:2.6-15ubuntu2.3

Ubuntu 16.04 LTS:
hostapd 2.4-0ubuntu6.5
wpasupplicant 2.4-0ubuntu6.5

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

References:
https://usn.ubuntu.com/usn/usn-3969-1
CVE-2019-11555

Package Information:
https://launchpad.net/ubuntu/+source/wpa/2:2.6-21ubuntu3.1
https://launchpad.net/ubuntu/+source/wpa/2:2.6-18ubuntu1.2
https://launchpad.net/ubuntu/+source/wpa/2:2.6-15ubuntu2.3
https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu6.5

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