A Software Properties security update has been released for Ubuntu Linux 20.04 LTS, 18.04 LTS, and 16.04 LTS.

USN-4457-1: Software Properties vulnerability

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Ubuntu Security Notice USN-4457-1
August 12, 2020

software-properties vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Software Properties could be made to manipulate the display.

Software Description:
- software-properties: manage the repositories that you install software from

Details:

Jason A. Donenfeld discovered that Software Properties incorrectly filtered
certain escape sequences when displaying PPA descriptions. If a user were
tricked into adding an arbitrary PPA, a remote attacker could possibly
manipulate the screen.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
python3-software-properties 0.98.9.2
software-properties-common 0.98.9.2

Ubuntu 18.04 LTS:
python3-software-properties 0.96.24.32.14
software-properties-common 0.96.24.32.14

Ubuntu 16.04 LTS:
python-software-properties 0.96.20.10
python3-software-properties 0.96.20.10
software-properties-common 0.96.20.10

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4457-1
CVE-2020-15709

Package Information:
  https://launchpad.net/ubuntu/+source/software-properties/0.98.9.2
  https://launchpad.net/ubuntu/+source/software-properties/0.96.24.32.14
  https://launchpad.net/ubuntu/+source/software-properties/0.96.20.10