GLSA-201706-27 : FreeRADIUS: Security bypass

High Nessus Plugin ID 101073


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201706-27 (FreeRADIUS: Security bypass)

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 completely.
Impact :

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.
Workaround :

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'

See Also

Plugin Details

Severity: High

ID: 101073

File Name: gentoo_GLSA-201706-27.nasl

Version: $Revision: 3.2 $

Type: local

Published: 2017/06/28

Modified: 2018/01/26

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P


Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:freeradius, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2017/06/27

Reference Information

CVE: CVE-2017-9148

GLSA: 201706-27