Leonidas S. Barbosa has announced that an updated Apport package that fixes several vulnerabilities has been released for Ubuntu 14.04 ESM. Ubuntu Extended Security Maintenance (ESM) is a paid security subscription provided by Canonical Ltd.

=========================================================================
Ubuntu Security Notice USN-4171-2

November 04, 2019

apport vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Apport.

Software Description:
- apport: automatically generate crash reports for debugging
Details:

USN-4171-1 fixed several vulnerabilities in apport. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Kevin Backhouse discovered Apport would read its user-controlled settings file as the root user. This could be used by a local attacker to possibly crash Apport or have other unspecified consequences. (CVE-2019-11481)
Sander Bos discovered a race-condition in Apport during core dump creation. This could be used by a local attacker to generate a crash reportfor a privileged process that is readable by an unprivileged user. (CVE-2019-11482)

Sander Bos discovered Apport mishandled crash dumps originating from containers. This could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-11483)

Sander Bos discovered Apport mishandled lock-file creation. This could be used by a local attacker to cause a denial of service against Apport. (CVE-2019-11485)

Kevin Backhouse discovered Apport read various process-specific files with elevated privileges during crash dump generation. This could could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-15790)
Update instructions:

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

Ubuntu 14.04 ESM:
apport 2.14.1-0ubuntu3.29+esm2
python-apport 2.14.1-0ubuntu3.29+esm2
python3-apport 2.14.1-0ubuntu3.29+esm2

In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4171-2
https://usn.ubuntu.com/4171-1
CVE-2019-11481, CVE-2019-11482, CVE-2019-11483, CVE-2019-11485, CVE-2019-15790