USN-3845-1: FreeRDP vulnerabilities

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)

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

• CVE-2018-8784
• CVE-2018-8785
• CVE-2018-8786
• CVE-2018-8787
• CVE-2018-8788
• CVE-2018-8789

Source: USN-3845-1: FreeRDP vulnerabilities