A ca-certificates update has been released for Ubuntu Linux 14.04 ESM and 16.04 ESM.

USN-5761-2: ca-certificates update

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Ubuntu Security Notice USN-5761-2
December 06, 2022

ca-certificates update
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

A distrusted certificate authority has been removed from ca-certificates.

Software Description:
- ca-certificates: Common CA certificates

Details:

USN-5761-1 updated ca-certificates. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Due to security concerns, the TrustCor certificate authority has been
marked as distrusted in Mozilla's root store. This update removes the
TrustCor CA certificates from the ca-certificates package.

Update instructions:

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

Ubuntu 16.04 ESM:
ca-certificates 20211016~16.04.1~esm2

Ubuntu 14.04 ESM:
ca-certificates 20211016~14.04.1~esm1

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

References:
  https://ubuntu.com/security/notices/USN-5761-2
  https://ubuntu.com/security/notices/USN-5761-1
  https://launchpad.net/bugs/XXXXXX