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.