CVE-2017-9148 Auth bypass in n/a

Critical 9.8 Published 29 May 2017 Updated 5 Aug 2024

Remote attackers can bypass authentication in FreeRADIUS by exploiting a TLS session cache flaw that allows resumption of unauthenticated sessions via PEAP or TTLS.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2017-9148?

CVE-2017-9148 is a critical authentication bypass vulnerability in n/a, published on 29 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x before 2017-02-04, and 4.0.x before 2017-02-04 fails to reliably prevent resumption of an unauthenticated session, which allows remote attackers (such as malicious 802.1X supplicants) to bypass authentication via PEAP or TTLS.

Weakness: CWE-287

Which versions are affected by CVE-2017-9148?

It affects 1 product.

Linux distribution packages (30)

`freeradius` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-devel` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-doc` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-krb5` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-ldap` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-mysql` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-perl` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-postgresql` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-python` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-sqlite` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-unixODBC` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius-utils` Red Hat:enterprise_linux:7::server	All versions	`0:3.0.4-8.el7_3`
`freeradius` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-doc` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-krb5` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-ldap` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-mysql` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-perl` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-postgresql` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-python` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-sqlite` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-unixODBC` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-utils` Red Hat:enterprise_linux:7::workstation	All versions	`0:3.0.4-8.el7_3`
`freeradius-server` SUSE:Linux Enterprise Server 12 SP2	All versions	`3.0.3-17.4.1`
`freeradius-server` SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2	All versions	`3.0.3-17.4.1`
`freeradius-server` SUSE:Linux Enterprise Server for SAP Applications 12 SP2	All versions	`3.0.3-17.4.1`
`freeradius-server` SUSE:Linux Enterprise Software Development Kit 12 SP2	All versions	`3.0.3-17.4.1`

Products include Freeradius Freeradius.

How do I fix CVE-2017-9148?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-9148 being exploited?

There is no known exploitation of CVE-2017-9148 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-9148, GHSA-qvp7-wcjq-6rv5, RHSA-2017:1581, SUSE-SU-2017:1705-1.