USN-5662-1: Oniguruma vulnerabilities

Publication date

10 October 2022

Overview

Several security issues were fixed in Oniguruma.


Packages

  • 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. This issue
only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2019-16163,
CVE-2019-19012, CVE-2019-19204, CVE-2019-19246)

It was discovered that Oniguruma incorrectly handled memory when using certain
UChar pointers. An attacker could possibly use this issue to cause a denial of
service or sensitive information disclosure. (CVE-2019-19203)

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. This issue
only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. (CVE-2019-16163,
CVE-2019-19012, CVE-2019-19204, CVE-2019-19246)

It was discovered that Oniguruma incorrectly handled memory when using certain
UChar pointers. An attacker could possibly use this issue to cause a denial of
service or sensitive information disclosure. (CVE-2019-19203)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
18.04 bionic libonig4 –  6.7.0-1ubuntu0.1~esm2  
16.04 xenial libonig2 –  5.9.6-1ubuntu0.1+esm3  
14.04 trusty libonig2 –  5.9.1-1ubuntu1.1+esm3  

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