USN-5785-1: FreeRADIUS vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• freeradius - 3.0.26~dfsg~git20220223.1.00ed0241fa-0ubuntu3.1

Ubuntu 20.04

• freeradius - 3.0.20+dfsg-3ubuntu0.2

Ubuntu 18.04

• freeradius - 3.0.16+dfsg-1ubuntu3.2

Ubuntu 16.04

• freeradius - 2.2.8+dfsg-0.1ubuntu0.1+esm1
  Available with Ubuntu Pro

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

References

• CVE-2019-17185
• CVE-2022-41860
• CVE-2022-41861