Executive Summary

Summary
Title FreeRADIUS: Security bypass
Informations
Name GLSA-201706-27 First vendor Publication 2017-06-27
Vendor Gentoo Last vendor Modification 2017-06-27
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

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

Background

FreeRADIUS is an open source RADIUS authentication server.

Description

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.

Resolution

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

References

[ 1 ] CVE-2017-9148 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-9148

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

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

Original Source

Url : http://security.gentoo.org/glsa/glsa-201706-27.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 21

Nessus® Vulnerability Scanner

Date Description
2017-08-08 Name : The remote EulerOS host is missing a security update.
File : EulerOS_SA-2017-1134.nasl - Type : ACT_GATHER_INFO
2017-08-08 Name : The remote EulerOS host is missing a security update.
File : EulerOS_SA-2017-1135.nasl - Type : ACT_GATHER_INFO
2017-07-17 Name : The remote Fedora host is missing a security update.
File : fedora_2017-7ee5c17024.nasl - Type : ACT_GATHER_INFO
2017-07-14 Name : The remote Virtuozzo host is missing a security update.
File : Virtuozzo_VZLSA-2017-1581.nasl - Type : ACT_GATHER_INFO
2017-07-05 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1777-1.nasl - Type : ACT_GATHER_INFO
2017-06-30 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-1581.nasl - Type : ACT_GATHER_INFO
2017-06-29 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-1581.nasl - Type : ACT_GATHER_INFO
2017-06-29 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170628_freeradius_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2017-06-28 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201706-27.nasl - Type : ACT_GATHER_INFO
2017-06-28 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-1581.nasl - Type : ACT_GATHER_INFO
2017-06-28 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1705-1.nasl - Type : ACT_GATHER_INFO
2017-06-20 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-709.nasl - Type : ACT_GATHER_INFO
2017-06-12 Name : The remote Fedora host is missing a security update.
File : fedora_2017-e698bba980.nasl - Type : ACT_GATHER_INFO
2017-06-08 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-3316-1.nasl - Type : ACT_GATHER_INFO
2017-06-06 Name : The remote Debian host is missing a security update.
File : debian_DLA-977.nasl - Type : ACT_GATHER_INFO
2017-06-02 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_673dce4646d011e7a5390050569f7e80.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2017-06-29 13:23:35
  • Multiple Updates
2017-06-27 13:21:18
  • First insertion