USN-3845-1: FreeRDP vulnerabilities

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)