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Category:   Application (Security)  >   FreeRADIUS Vendors:   FreeRADIUS Server Project
(Ubuntu Issues Fix) FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
SecurityTracker Alert ID:  1038629
SecurityTracker URL:  http://securitytracker.com/id/1038629
CVE Reference:   CVE-2017-9148   (Links to External Site)
Date:  Jun 8 2017
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.0.14
Description:   A vulnerability was reported in FreeRADIUS. A remote user can bypass authentication.

A remote user (supplicant) without authentication credentials can exploit a flaw in the processing of resumed TLS sessions to bypass authentication and cause the target server to issue an Extensible Authentication Protocol (EAP) Success message.

Stefan Winter of the RESTENA Foundation and Lubo Pavlieek of the University of Economics, Prague, separately reported this vulnerability.

Impact:   A remote user can bypass authentication and cause the target server to issue an EAP Success message.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3316-1

Vendor URL:  www.ubuntu.com/usn/usn-3316-1 (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  17.04

Message History:   This archive entry is a follow-up to the message listed below.
May 29 2017 FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System



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