A ncurses security update has been released for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 18.04 LTS.

[USN-6451-1] ncurses vulnerability

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Ubuntu Security Notice USN-6451-1
October 24, 2023

ncurses vulnerability
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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