Executive Summary

Title wpa_supplicant and hostapd vulnerability
Name USN-4098-1 First vendor Publication 2019-08-14
Vendor Ubuntu Last vendor Modification 2019-08-14
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 :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores


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

- Ubuntu 19.04 - Ubuntu 18.04 LTS


wpa_supplicant and hostapd could be made to expose sensitive information over the network.

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


It was discovered that wpa_supplicant and hostapd were vulnerable to a side channel attack against EAP-pwd. A remote attacker could possibly use this issue to recover certain passwords.

Update instructions:

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

Ubuntu 19.04:
hostapd 2:2.6-21ubuntu3.2
wpasupplicant 2:2.6-21ubuntu3.2

Ubuntu 18.04 LTS:
hostapd 2:2.6-15ubuntu2.4
wpasupplicant 2:2.6-15ubuntu2.4

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


Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4098-1

Alert History

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Date Informations
2019-08-14 17:19:01
  • First insertion