An Oniguruma security update has been released for Ubuntu Linux 14.04 ESM.

USN-4460-1: Oniguruma vulnerabilities

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Ubuntu Security Notice USN-4460-1
August 17, 2020

libonig vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Oniguruma.

Software Description:
- libonig: regular expressions library

Details:

It was discovered that Oniguruma incorrectly handled certain regular
expressions. An attacker could possibly use this issue to cause a denial
of service, obtain sensitive information or other unspecified impact.
(CVE-2019-16163, CVE-2019-19012, CVE-2019-19204, CVE-2019-19246)

Update instructions:

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

Ubuntu 14.04 ESM:
libonig2 5.9.1-1ubuntu1.1+esm2

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

References:
  https://usn.ubuntu.com/4460-1
CVE-2019-16163, CVE-2019-19012, CVE-2019-19204, CVE-2019-19246