USN-7055-1: FreeRADIUS vulnerability

3 October 2024

A system authentication measure could be bypassed.

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Releases

Packages

  • 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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04

In general, a standard system update will make all the necessary changes.

References

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Further reading