ncurses vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- 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:

ncurses could be made to crash if it opened a specially crafted
file.

Software Description:
- ncurses: shared libraries for terminal handling

Details:

It was discovered that ncurses could be made to read out of bounds.
An attacker could possibly use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
lib32ncurses5 6.1-1ubuntu1.18.04.1+esm1
lib32ncursesw5 6.1-1ubuntu1.18.04.1+esm1
lib32tinfo5 6.1-1ubuntu1.18.04.1+esm1
lib64ncurses5 6.1-1ubuntu1.18.04.1+esm1
lib64tinfo5 6.1-1ubuntu1.18.04.1+esm1
libncurses5 6.1-1ubuntu1.18.04.1+esm1
libncursesw5 6.1-1ubuntu1.18.04.1+esm1
libtinfo5 6.1-1ubuntu1.18.04.1+esm1
libx32ncurses5 6.1-1ubuntu1.18.04.1+esm1
libx32ncursesw5 6.1-1ubuntu1.18.04.1+esm1
libx32tinfo5 6.1-1ubuntu1.18.04.1+esm1
ncurses-bin 6.1-1ubuntu1.18.04.1+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
lib32ncurses5 6.0+20160213-1ubuntu1+esm4
lib32ncursesw5 6.0+20160213-1ubuntu1+esm4
lib32tinfo5 6.0+20160213-1ubuntu1+esm4
lib64ncurses5 6.0+20160213-1ubuntu1+esm4
lib64tinfo5 6.0+20160213-1ubuntu1+esm4
libncurses5 6.0+20160213-1ubuntu1+esm4
libncursesw5 6.0+20160213-1ubuntu1+esm4
libtinfo5 6.0+20160213-1ubuntu1+esm4
libx32ncurses5 6.0+20160213-1ubuntu1+esm4
libx32ncursesw5 6.0+20160213-1ubuntu1+esm4
libx32tinfo5 6.0+20160213-1ubuntu1+esm4
ncurses-bin 6.0+20160213-1ubuntu1+esm4

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
lib32ncurses5 5.9+20140118-1ubuntu1+esm4
lib32ncursesw5 5.9+20140118-1ubuntu1+esm4
lib32tinfo5 5.9+20140118-1ubuntu1+esm4
lib64ncurses5 5.9+20140118-1ubuntu1+esm4
lib64tinfo5 5.9+20140118-1ubuntu1+esm4
libncurses5 5.9+20140118-1ubuntu1+esm4
libncursesw5 5.9+20140118-1ubuntu1+esm4
libtinfo5 5.9+20140118-1ubuntu1+esm4
libx32ncurses5 5.9+20140118-1ubuntu1+esm4
libx32ncursesw5 5.9+20140118-1ubuntu1+esm4
libx32tinfo5 5.9+20140118-1ubuntu1+esm4
ncurses-bin 5.9+20140118-1ubuntu1+esm4

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

References:
https://ubuntu.com/security/notices/USN-6451-1
CVE-2020-19189