Ubuntu 22.04 LTS: USN-5461-1 Critical: FreeRDP Authentication Issue

ubuntu

June 6, 2022

FreeRDP could allow unintended access to network services.

Summary

FreeRDP could allow unintended access to network services.

Software Description:

- freerdp2: RDP client for Windows Terminal Services

Details:

It was discovered that FreeRDP incorrectly handled empty password values. A

remote attacker could use this issue to bypass server authentication. This

issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10.

(CVE-2022-24882)

It was discovered that FreeRDP incorrectly handled server configurations

with an invalid SAM file path. A remote attacker could use this issue to

bypass server authentication. (CVE-2022-24883)

Topics Covered

security advisory critical ubuntu authentication bypass network access server configuration freeRDP

Update Instructions

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

Ubuntu 22.04 LTS:
  libfreerdp-client2-2            2.6.1+dfsg1-3ubuntu2.1
  libfreerdp-server2-2            2.6.1+dfsg1-3ubuntu2.1

Ubuntu 21.10:
  libfreerdp-client2-2            2.3.0+dfsg1-2ubuntu0.2
  libfreerdp-server2-2            2.3.0+dfsg1-2ubuntu0.2

Ubuntu 20.04 LTS:
  libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.20.04.3
  libfreerdp-server2-2            2.2.0+dfsg1-0ubuntu0.20.04.3

Ubuntu 18.04 LTS:
  libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.18.04.3
  libfreerdp-server2-2            2.2.0+dfsg1-0ubuntu0.18.04.3

After a standard system update you need to reboot your computer to make all
the necessary changes.