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Category:   Application (Security)  >   FreeRADIUS Vendors:   FreeRADIUS Server Project
FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
SecurityTracker Alert ID:  1038576
SecurityTracker URL:  http://securitytracker.com/id/1038576
CVE Reference:   CVE-2017-9148   (Links to External Site)
Date:  May 29 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:   The vendor has issued a fix (3.0.14).

The vendor advisory is available at:

http://freeradius.org/press/index.html#3.0.14

Vendor URL:  freeradius.org/press/index.html#3.0.14 (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jun 8 2017 (Ubuntu Issues Fix) FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
Ubuntu has issued a fix for Ubuntu Linux 17.04.
Jun 28 2017 (Red Hat Issues Fix) FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Jun 28 2017 (Oracle Issues Fix for Oracle Linux) FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
Oracle has issued a fix for Oracle Linux 7.
Jun 30 2017 (CentOS Issues Fix) FreeRADIUS Resumed TLS Session Cache Flaw Lets Remote Users Bypass Authentication on the Target System
CentOS has issued a fix for CentOS 7.



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