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Ubuntu: 4136-1 Critical: wpa_supplicant Denial of Service Issue

ubuntu
Calendar Grey September 18, 2019
Dist Ubuntu Esm H88
The Ubuntu Security Advisory USN-4145-1 outlines a critical flaw in the openSSL package that demands urgent action from users.
wpa_supplicant could be made to be disconnected and require reconnection to the network if it received a specially crafted management frame.

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.

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu wpa_supplicant hostapd

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://ubuntu.com/security/notices/USN-4136-1

CVE-2019-16275

Severity
critical
Lowest
Low
Medium
High
Critical

September 18, 2019

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu wpa_supplicant hostapd

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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