[USN-5785-1] FreeRADIUS vulnerabilities

[Nishit Majithia]

==========================================================================
Ubuntu Security Notice USN-5785-1
January 04, 2023

freeradius vulnerabilities
==========================================================================

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

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in FreeRADIUS.

Software Description:
- freeradius: high-performance and highly configurable RADIUS server

Details:

It was discovered that FreeRADIUS incorrectly handled multiple EAP-pwd
handshakes. An attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-17185)

Shane Guan discovered that FreeRADIUS incorrectly handled memory when
checking unknown SIM option sent by EAP-SIM supplicant. An attacker could
possibly use this issue to cause a denial of service on the server. This
issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04
LTS. (CVE-2022-41860)

It was discovered that FreeRADIUS incorrectly handled memory when
processing certain abinary attributes. An attacker could possibly use this
issue to cause a denial of service on the server. (CVE-2022-41861)

Update instructions:

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

Ubuntu 22.04 LTS:
  freeradius                      3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1

Ubuntu 20.04 LTS:
  freeradius                      3.0.20+dfsg-3ubuntu0.2

Ubuntu 18.04 LTS:
  freeradius                      3.0.16+dfsg-1ubuntu3.2

Ubuntu 16.04 ESM:
  freeradius                      2.2.8+dfsg-0.1ubuntu0.1+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5785-1
  CVE-2019-17185, CVE-2022-41860, CVE-2022-41861

Package Information:
  https://launchpad.net/ubuntu/+source/freeradius/3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1
  https://launchpad.net/ubuntu/+source/freeradius/3.0.20+dfsg-3ubuntu0.2
  https://launchpad.net/ubuntu/+source/freeradius/3.0.16+dfsg-1ubuntu3.2
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