Executive Summary

Title wpa_supplicant and hostapd vulnerability
Name USN-3969-2 First vendor Publication 2019-05-09
Vendor Ubuntu Last vendor Modification 2019-05-09
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


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

- Ubuntu 14.04 ESM


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


USN-3969-1 fixed a vulnerability in wpa_supplicant and hostapd. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

テつ It was discovered that wpa_supplicant and hostapd incorrectly handled テつ unexpected fragments when using EAP-pwd. A remote attacker could テつ 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 14.04 ESM: テつ hostapdテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 2.1-0ubuntu1.7+esm1 テつ wpasupplicantテつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ テつ 2.1-0ubuntu1.7+esm1

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

References: テつ https://usn.ubuntu.com/usn/usn-3969-2 テつ https://usn.ubuntu.com/usn/usn-3969-1 テつ CVE-2019-11555

Original Source

Url : http://www.ubuntu.com/usn/USN-3969-2

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

Application 43
Application 39

Alert History

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Date Informations
2019-05-09 17:18:41
  • First insertion