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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References


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