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Ubuntu Security Notice USN-5461-1
June 06, 2022

freerdp2 vulnerabilities

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

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

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)

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.

References:
https://ubuntu.com/security/notices/USN-5461-1
CVE-2022-24882, CVE-2022-24883

Package Information:
https://launchpad.net/ubuntu/+source/freerdp2/2.6.1+dfsg1-3ubuntu2.1
https://launchpad.net/ubuntu/+source/freerdp2/2.3.0+dfsg1-2ubuntu0.2
https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.20.04.3
https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.18.04.3