USN-5461-1: FreeRDP vulnerabilities

Releases

• Ubuntu 22.04 LTS
• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• 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)

Update instructions

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

Ubuntu 22.04

• libfreerdp-server2-2 - 2.6.1+dfsg1-3ubuntu2.1
• libfreerdp-client2-2 - 2.6.1+dfsg1-3ubuntu2.1

Ubuntu 21.10

• libfreerdp-server2-2 - 2.3.0+dfsg1-2ubuntu0.2
• libfreerdp-client2-2 - 2.3.0+dfsg1-2ubuntu0.2

Ubuntu 20.04

• libfreerdp-server2-2 - 2.2.0+dfsg1-0ubuntu0.20.04.3
• libfreerdp-client2-2 - 2.2.0+dfsg1-0ubuntu0.20.04.3

Ubuntu 18.04

• libfreerdp-server2-2 - 2.2.0+dfsg1-0ubuntu0.18.04.3
• libfreerdp-client2-2 - 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.

References

• CVE-2022-24883
• CVE-2022-24882