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Ubuntu Security Notice USN-7055-1
October 03, 2024
freeradius vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
A system authentication measure could be bypassed.
Software Description:
- freeradius: high-performance and highly configurable RADIUS server
Details:
Goldberg, Miro Haller, Nadia Heninger, Mike Milano, Dan Shumow, Marc
Stevens, and Adam Suhl discovered that FreeRADIUS incorrectly authenticated
certain responses. An attacker able to intercept communications between a
RADIUS client and server could possibly use this issue to forge responses,
bypass authentication, and access network devices and services.
This update introduces new configuration options called "limit_proxy_state"
and "require_message_authenticator" that default to "auto" but should be
set to "yes" once all RADIUS devices have been upgraded on a network.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
  freeradius                      3.2.5+dfsg-3~ubuntu24.04.1
Ubuntu 22.04 LTS
  freeradius                      3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.3
Ubuntu 20.04 LTS
  freeradius                      3.0.20+dfsg-3ubuntu0.4
In general, a standard system update will make all the necessary changes.
References:
  https://ubuntu.com/security/notices/USN-7055-1
  CVE-2024-3596
Package Information:
  https://launchpad.net/ubuntu/+source/freeradius/3.2.5+dfsg-3~ubuntu24.04.1
https://launchpad.net/ubuntu/+source/freeradius/3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.3
  https://launchpad.net/ubuntu/+source/freeradius/3.0.20+dfsg-3ubuntu0.4