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Joined: 12 May 2004
Posts: 2308

PostPosted: Wed Jul 12, 2017 12:26 am    Post subject: [ GLSA 201706-27 ] FreeRADIUS Reply with quote

Gentoo Linux Security Advisory

Title: FreeRADIUS: Security bypass (GLSA 201706-27)
Severity: normal
Exploitable: remote
Date: 2017-06-27
Bug(s): #620186
ID: 201706-27


A vulnerability in FreeRADIUS might allow remote attackers to
bypass authentication.


FreeRADIUS is an open source RADIUS authentication server.

Affected Packages

Package: net-dialup/freeradius
Vulnerable: < 3.0.14
Unaffected: >= 3.0.14
Architectures: All supported architectures


It was discovered that the implementation of TTLS and PEAP in FreeRADIUS
skips inner authentication when it handles a resumed TLS connection. The
affected versions of FreeRADIUS fails to reliably prevent the resumption
of unauthenticated sessions unless the TLS session cache is disabled


An unauthenticated remote user can bypass authentication by starting a
session, and then resuming an unauthenticated TLS session before inner
authentication has been completed successfully.


Set “enabled = no” in the cache subsection of eap module settings to
disable TLS session caching.


All FreeRADIUS users should upgrade to the latest version:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=net-dialup/freeradius-3.0.14"


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