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Category:   Application (Generic)  >   wpa_supplicant Vendors:   Malinen, Jouni et al
(Ubuntu Issues Fix) wpa_supplicant EAPOL-Key Data Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1041515
SecurityTracker URL:  http://securitytracker.com/id/1041515
CVE Reference:   CVE-2018-14526   (Links to External Site)
Date:  Aug 20 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in wpa_supplicant. A remote user can cause denial of service conditions on the target system.

A remote user can send specially crafted unauthenticated EAPOL-Key frame data to modify the Group Transient Key (GTK) on the target system, preventing the target system from accepting group-addressed frames.

Systems where WPA2/RSN style of EAPOL-Key construction is used with TKIP negotiated as the pairwise cipher (which should not be done) are affected.

Mathy Vanhoef of the imec-DistriNet research group of KU Leuven reported this vulnerability.

Impact:   A remote user can cause denial of service conditions.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://usn.ubuntu.com/usn/usn-3745-1

Vendor URL:  usn.ubuntu.com/usn/usn-3745-1 (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 18.04 LTS

Message History:   This archive entry is a follow-up to the message listed below.
Aug 9 2018 wpa_supplicant EAPOL-Key Data Processing Flaw Lets Remote Users Deny Service



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