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AUSCERT External Security Bulletin Redistribution
ESB-2017.1953
FreeRDP vulnerabilities
8 August 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: libfreerdp-client1.1
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote with User Interaction
Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-2839 CVE-2017-2838 CVE-2017-2837
CVE-2017-2836 CVE-2017-2835 CVE-2017-2834
CVE-2014-0791 CVE-2014-0250
Reference: ESB-2017.1905
Original Bulletin:
http://www.ubuntu.com/usn/usn-3380-1
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Ubuntu Security Notice USN-3380-1
August 07, 2017
freerdp vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in FreeRDP.
Software Description:
- - freerdp: RDP client for Windows Terminal Services
Details:
It was discovered that FreeRDP incorrectly handled certain width and height
values. 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 applied to Ubuntu 14.04 LTS. (CVE-2014-0250)
It was discovered that FreeRDP incorrectly handled certain values in a
Scope List. A malicious server could use this issue to cause FreeRDP to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2014-0791)
Tyler Bohan discovered that FreeRDP incorrectly handled certain length
values. A malicious server could use this issue to cause FreeRDP to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2017-2834, CVE-2017-2835)
Tyler Bohan discovered that FreeRDP incorrectly handled certain packets. A
malicious server could possibly use this issue to cause FreeRDP to crash,
resulting in a denial of service. (CVE-2017-2836, CVE-2017-2837,
CVE-2017-2838, CVE-2017-2839)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
libfreerdp-client1.1 1.1.0~git20140921.1.440916e+dfsg1-10ubuntu1.1
Ubuntu 16.04 LTS:
libfreerdp-client1.1 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2
Ubuntu 14.04 LTS:
libfreerdp1 1.0.2-2ubuntu1.1
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3380-1
CVE-2014-0250, CVE-2014-0791, CVE-2017-2834, CVE-2017-2835,
CVE-2017-2836, CVE-2017-2837, CVE-2017-2838, CVE-2017-2839
Package Information:
https://launchpad.net/ubuntu/+source/freerdp/1.1.0~git20140921.1.440916e+dfsg1-10ubuntu1.1
https://launchpad.net/ubuntu/+source/freerdp/1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2
https://launchpad.net/ubuntu/+source/freerdp/1.0.2-2ubuntu1.1
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