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AUSCERT External Security Bulletin Redistribution
ESB-2019.1606.2
USN-3969-1: wpa_supplicant and hostapd vulnerability
10 May 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: wpa_supplicant
hostapd
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11555
Original Bulletin:
https://usn.ubuntu.com/3969-1/
https://usn.ubuntu.com/3969-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running wpa_supplicant or hostapd check for an updated version of
the software for their operating system.
Revision History: May 10 2019: Added USN-3969-2
May 8 2019: Initial Release
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USN-3969-1: wpa_supplicant and hostapd vulnerability
7 May 2019
wpa vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
wpa_supplicant and hostapd could be made to crash if they received specially
crafted network traffic.
Software Description
o 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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o CVE-2019-11555
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USN-3969-2: wpa_supplicant and hostapd vulnerability
9 May 2019
wpa vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
Summary
wpa_supplicant and hostapd could be made to crash if they received specially
crafted network traffic.
Software Description
o wpa - client support for WPA and WPA2
Details
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:
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 14.04 ESM
hostapd - 2.1-0ubuntu1.7+esm1
wpasupplicant - 2.1-0ubuntu1.7+esm1
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o USN-3969-1
o CVE-2019-11555
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