An Exiv2 security update has been released for Ubuntu Linux 19.10, 18.04 LTS, and 16.04 LTS.

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Ubuntu Security Notice USN-4270-1
February 05, 2020

exiv2 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Exiv2 could be made to crash if it opened a specially crafted image.

Software Description:
- exiv2: EXIF/IPTC/XMP metadata manipulation tool

Details:

It was discovered that Exiv2 incorrectly handled certain images.
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 19.10:
exiv2 0.25-4ubuntu2.2
libexiv2-14 0.25-4ubuntu2.2

Ubuntu 18.04 LTS:
exiv2 0.25-3.1ubuntu0.18.04.5
libexiv2-14 0.25-3.1ubuntu0.18.04.5

Ubuntu 16.04 LTS:
exiv2 0.25-2.1ubuntu16.04.6
libexiv2-14 0.25-2.1ubuntu16.04.6

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

References:
  https://usn.ubuntu.com/4270-1
CVE-2019-20421

Package Information:
  https://launchpad.net/ubuntu/+source/exiv2/0.25-4ubuntu2.2
  https://launchpad.net/ubuntu/+source/exiv2/0.25-3.1ubuntu0.18.04.5
  https://launchpad.net/ubuntu/+source/exiv2/0.25-2.1ubuntu16.04.6