Executive Summary

Summary
Title wpa_supplicant and hostapd vulnerability
Informations
Name USN-3969-1 First vendor Publication 2019-05-07
Vendor Ubuntu Last vendor Modification 2019-05-07
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

Original Source

Url : http://www.ubuntu.com/usn/USN-3969-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 43
Application 39

Alert History

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0
Date Informations
2020-03-19 13:20:11
  • First insertion