A new release of the Ubuntu Cloud Images for stable Ubuntu release 18.04 LTS (Bionic Beaver) is available at [1]. These new images superseded the existing images [2]. Images are available for download or immediate use on EC2 via publish AMI ids. Users who wish to update their existing installations can do so with:
   'sudo apt-get update && sudo apt-get dist-upgrade && sudo reboot'.

The following packages have been updated. Please see the full changelogs
for a complete listing of changes:
 * bash: 4.4.18-2ubuntu1.2 => 4.4.18-2ubuntu1.3 


The following is a complete changelog for this image.
new: {}
removed: {}
changed: ['bash']
new snaps: {}
removed snaps: {}
changed snaps: []
==== bash: 4.4.18-2ubuntu1.2 => 4.4.18-2ubuntu1.3 ====
====     bash
  * SECURITY UPDATE: privilege gain via setuid
    - debian/patches/CVE-2019-18276.patch: replace the use of
      setuid and setgid when possible with setresuid and setresgid,
      respectively.
    - CVE-2019-18276

--
[1] http://cloud-images.ubuntu.com/releases/bionic/release-20220424/
[2] http://cloud-images.ubuntu.com/releases/bionic/release-20220419/