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Ubuntu 4136-2 Moderate: wpa_supplicant Denial Of Service Threat

ubuntu
Calendar Grey September 18, 2019
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-4136-2 addresses a vulnerability in wpa_supplicant that may lead to problems with disconnecting and reconnecting to networks.
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

- wpasupplicant: client support for WPA and WPA2

Details:

USN-4136-1 fixed a vulnerability in wpa_supplicant. This update provides

the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory 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 wap_supplicant disconnection

Update Instructions

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

Ubuntu 14.04 ESM:
  hostapd                         1:2.1-0ubuntu1.7+esm2
  wpasupplicant                   2.1-0ubuntu1.7+esm2

Ubuntu 12.04 ESM:
  wpasupplicant                   0.7.3-6ubuntu2.5

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

References

https://ubuntu.com/security/notices/USN-4136-2

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

CVE-2019-16275

Severity
important
Lowest
Low
Medium
High
Critical

September 18, 2019

Topics%20covered

Topics Covered

security advisory denial of service ubuntu wap_supplicant disconnection

Package Information

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