A LibTIFF security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, and 22.10.

==========================================================================
Ubuntu Security Notice USN-5743-2
December 01, 2022

tiff vulnerability
==========================================================================

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

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

LibTIFF could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- tiff: Tag Image File Format (TIFF) library

Details:

USN-5743-1 fixed a vulnerability in LibTIFF. This update provides the
corresponding updates for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,
Ubuntu 22.04 LTS and Ubuntu 22.10.

Original advisory details:

It was discovered that LibTIFF incorrectly handled certain malformed
images. If a user or automated system were tricked into opening a specially
crafted image, a remote attacker could crash the application, leading to a
denial of service, or possibly execute arbitrary code with user privileges.

Update instructions:

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

Ubuntu 22.10:
libtiff-tools 4.4.0-4ubuntu3.2
libtiff5 4.4.0-4ubuntu3.2

Ubuntu 22.04 LTS:
libtiff-tools 4.3.0-6ubuntu0.3
libtiff5 4.3.0-6ubuntu0.3

Ubuntu 20.04 LTS:
libtiff-tools 4.1.0+git191117-2ubuntu0.20.04.7
libtiff5 4.1.0+git191117-2ubuntu0.20.04.7

Ubuntu 18.04 LTS:
libtiff-tools 4.0.9-5ubuntu0.9
libtiff5 4.0.9-5ubuntu0.9

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

References:
https://ubuntu.com/security/notices/USN-5743-2
https://ubuntu.com/security/notices/USN-5743-1
CVE-2022-3970

Package Information:
https://launchpad.net/ubuntu/+source/tiff/4.4.0-4ubuntu3.2
https://launchpad.net/ubuntu/+source/tiff/4.3.0-6ubuntu0.3
https://launchpad.net/ubuntu/+source/tiff/4.1.0+git191117-2ubuntu0.20.04.7
https://launchpad.net/ubuntu/+source/tiff/4.0.9-5ubuntu0.9