[USN-3845-1] FreeRDP vulnerabilities

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

freerdp, freerdp2 vulnerabilities
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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

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