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Ubuntu Security Notice USN-4136-1

Ubuntu Security Notice USN-4136-1
Posted Sep 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4136-1 - It was discovered that wpa_supplicant incorrectly handled certain management frames. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-16275
SHA-256 | f21e1d889a8d0fd9e0de9a46eac5375ba4997523973c4627952814f9e58efd21

Ubuntu Security Notice USN-4136-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4136-1
September 18, 2019

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

wpa_supplicant could be made to be disconnected and require reconnection to the
network if it received a specially crafted management frame.

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

Details:

It was discovered that wpa_supplicant incorrectly handled certain management
frames. An 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 2:2.6-21ubuntu3.3
wpasupplicant 2:2.6-21ubuntu3.3

Ubuntu 18.04 LTS:
hostapd 2:2.6-15ubuntu2.5
wpasupplicant 2:2.6-15ubuntu2.5

Ubuntu 16.04 LTS:
hostapd 1:2.4-0ubuntu6.6
wpasupplicant 2.4-0ubuntu6.6

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

References:
https://usn.ubuntu.com/4136-1
CVE-2019-16275

Package Information:
https://launchpad.net/ubuntu/+source/wpa/2:2.6-21ubuntu3.3
https://launchpad.net/ubuntu/+source/wpa/2:2.6-15ubuntu2.5
https://launchpad.net/ubuntu/+source/wpa/2.4-0ubuntu6.6
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