Home / Security / USN-3954-1: FreeRADIUS vulnerabilities | Ubuntu security notices

USN-3954-1: FreeRADIUS vulnerabilities | Ubuntu security notices

24 April 2019

freeradius vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 19.04
  • Ubuntu 18.10
  • Ubuntu 18.04 LTS


FreeRADIUS could be made to bypass authentication if it received a
specially crafted input.

Software Description

  • freeradius – high-performance and highly configurable RADIUS server


It was discovered that FreeRADIUS incorrectly handled certain inputs.
An attacker could possibly use this issue to bypass authentication.
(CVE-2019-11234, CVE-2019-11235)

Update instructions

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

Ubuntu 19.04
Ubuntu 18.10
Ubuntu 18.04 LTS

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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


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