=========================================================================
Ubuntu Security Notice USN-3845-1
December 12, 2018

freerdp, freerdp2 vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its
derivatives:

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in FreeRDP.

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

Details:

Eyal Itkin discovered FreeRDP incorrectly handled certain stream
encodings.  A malicious server could use this issue to cause
FreeRDP to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applies to Ubuntu 18.04
LTS and Ubuntu 18.10. (CVE-2018-8784, CVE-2018-8785)

Eyal Itkin discovered FreeRDP incorrectly handled bitmaps.  A
malicious server could use this issue to cause FreeRDP to crash,
resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2018-8786, CVE-2018-8787)

Eyal Itkin discovered FreeRDP incorrectly handled certain stream
encodings.  A malicious server could use this issue to cause
FreeRDP to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applies to Ubuntu 16.04
LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-8788)

Eyal Itkin discovered FreeRDP incorrectly handled NTLM
authentication.  A malicious server could use this issue to cause
FreeRDP to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applies to Ubuntu 16.04
LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-8789)

Update instructions:

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

Ubuntu 18.10:
  libfreerdp-client2-2
  2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1
  libfreerdp2-2
  2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1

Ubuntu 18.04 LTS:
  libfreerdp-client2-2
  2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
  libfreerdp2-2
  2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1

Ubuntu 16.04 LTS:
  libfreerdp-client1.1
  1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3

Ubuntu 14.04 LTS:
  libfreerdp1                     1.0.2-2ubuntu1.2

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

References:
  https://usn.ubuntu.com/usn/usn-3845-1
  CVE-2018-8784, CVE-2018-8785, CVE-2018-8786, CVE-2018-8787,
  CVE-2018-8788, CVE-2018-8789

Package Information:
  https://launchpad.net/ubuntu/+source/freerdp2/2.0.0~git20180411.1.7a7b1802+dfsg1-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/freerdp2/2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1
  https://launchpad.net/ubuntu/+source/freerdp/1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3
  https://launchpad.net/ubuntu/+source/freerdp/1.0.2-2ubuntu1.2