A LibTIFF security update has been released for Ubuntu Linux 20.04 LTS.

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Ubuntu Security Notice USN-5084-1
September 21, 2021

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

- Ubuntu 20.04 LTS

Summary:

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

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

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 20.04 LTS:
libtiff-tools 4.1.0+git191117-2ubuntu0.20.04.2
libtiff5 4.1.0+git191117-2ubuntu0.20.04.2

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

References:
  https://ubuntu.com/security/notices/USN-5084-1
CVE-2020-19143

Package Information:
  https://launchpad.net/ubuntu/+source/tiff/4.1.0+git191117-2ubuntu0.20.04.2