A FreeRDP security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 23.04.

[USN-6401-1] FreeRDP vulnerabilities

==========================================================================
Ubuntu Security Notice USN-6401-1
October 04, 2023

freerdp2 vulnerabilities
==========================================================================

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

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in FreeRDP.

Software Description:
- freerdp2: RDP client for Windows Terminal Services

Details:

It was discovered that FreeRDP did not properly manage certain inputs. A
malicious server could use this issue to cause FreeRDP clients to crash,
resulting in a denial of service, or possibly obtain sensitive
information. (cve-2023-39350, cve-2023-39351,  CVE-2023-39353,
CVE-2023-39354, CVE-2023-40181, CVE-2023-40188, CVE-2023-40589)

It was discovered that FreeRDP did not properly manage certain inputs. A
malicious server could use this issue to cause FreeRDP clients to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(cve-2023-40186 CVE-2023-40567, CVE-2023-40569)

Update instructions:

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

Ubuntu 23.04:
  libfreerdp2-2                   2.10.0+dfsg1-1ubuntu0.2

Ubuntu 22.04 LTS:
  libfreerdp2-2                   2.6.1+dfsg1-3ubuntu2.4
  libwinpr2-2                     2.6.1+dfsg1-3ubuntu2.4
  libwinpr2-dev                   2.6.1+dfsg1-3ubuntu2.4

Ubuntu 20.04 LTS:
  libfreerdp2-2                   2.2.0+dfsg1-0ubuntu0.20.04.5
  libwinpr2-2                     2.2.0+dfsg1-0ubuntu0.20.04.5
  libwinpr2-dev                   2.2.0+dfsg1-0ubuntu0.20.04.5

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  libfreerdp2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
  libwinpr2-2 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
  libwinpr2-dev 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1

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

References:
  https://ubuntu.com/security/notices/USN-6401-1
  CVE-2023-39350, CVE-2023-39351, CVE-2023-39353, CVE-2023-39354,
  CVE-2023-40181, CVE-2023-40186, CVE-2023-40188, CVE-2023-40567,
  CVE-2023-40569, CVE-2023-40589

Package Information:
https://launchpad.net/ubuntu/+source/freerdp2/2.10.0+dfsg1-1ubuntu0.2
https://launchpad.net/ubuntu/+source/freerdp2/2.6.1+dfsg1-3ubuntu2.4
https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.20.04.5