Detections
Analytics

GLSA-201706-27 : FreeRADIUS: Security bypass

critical Nessus Plugin ID 101073

Language:

Synopsis

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

Description

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.

Solution

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

See Also

https://security.gentoo.org/glsa/201706-27

Plugin Details

Severity: Critical

ID: 101073

File Name: gentoo_GLSA-201706-27.nasl

Version: 3.3

Type: local

Published: 6/28/2017

Updated: 1/11/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

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: 6/27/2017

Reference Information

CVE: CVE-2017-9148

GLSA: 201706-27