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Ubuntu Security Notice USN-6469-1
November 02, 2023
xrdp vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Summary:
xrdp could be made to crash or run programs if it received
specially crafted network traffic.
Software Description:
- xrdp: Remote Desktop Protocol (RDP) server
Details:
Ashley Newson discovered that xrdp incorrectly handled memory when
processing certain incoming connections. An attacker could possibly use
this issue to cause a denial of service or arbitrary code execution.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
   xrdp                            0.9.12-1ubuntu0.1
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   xrdp                            0.9.5-2ubuntu0.1~esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   xrdp                            0.6.1-2ubuntu0.3+esm2
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   xrdp                            0.6.0-1ubuntu0.1+esm2
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6469-1
   CVE-2020-4044
Package Information:
   https://launchpad.net/ubuntu/+source/xrdp/0.9.12-1ubuntu0.1