[USN-5154-1] FreeRDP vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-5154-1
November 23, 2021

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

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

- Ubuntu 21.10
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in FreeRDP.

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

Details:

It was discovered that FreeRDP incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code
or cause a crash. (CVE-2021-41159)

It was discovered that FreeRDP incorrectly handled certain connections.
An attacker could possibly use this issue to execute arbitrary code or
cause a crash. (CVE-2021-41160)

Update instructions:

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

Ubuntu 21.10:
  libfreerdp-client2-2            2.3.0+dfsg1-2ubuntu0.1

Ubuntu 21.04:
  libfreerdp-client2-2            2.3.0+dfsg1-1ubuntu0.1

Ubuntu 20.04 LTS:
  libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.20.04.2

Ubuntu 18.04 LTS:
  libfreerdp-client2-2            2.2.0+dfsg1-0ubuntu0.18.04.2

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

References:
  https://ubuntu.com/security/notices/USN-5154-1
  CVE-2021-41159, CVE-2021-41160

Package Information:
  https://launchpad.net/ubuntu/+source/freerdp2/2.3.0+dfsg1-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/freerdp2/2.3.0+dfsg1-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.20.04.2
  https://launchpad.net/ubuntu/+source/freerdp2/2.2.0+dfsg1-0ubuntu0.18.04.2
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