An APT security update has been released for Ubuntu Linux 14.04 ESM and 12.04 ESM.

USN-4359-2: APT vulnerability

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Ubuntu Security Notice USN-4359-2
May 28, 2020

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

APT could be made to crash if it opened a specially crafted file.

Software Description:
- apt: Advanced front-end for dpkg

Details:

USN-4359-1 fixed a vulnerability in APT. This update provides
the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.

Original advisory details:

It was discovered that APT incorrectly handled certain filenames during
package installation. If an attacker could provide a specially crafted
package to be installed by the system administrator, this could cause APT
to crash.

Update instructions:

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

Ubuntu 14.04 ESM:
apt 1.0.1ubuntu2.24+esm1

Ubuntu 12.04 ESM:
apt 0.8.16~exp12ubuntu10.29

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

References:
  https://usn.ubuntu.com/4359-2
  https://usn.ubuntu.com/4359-1
CVE-2020-3810