USN-3739-1: libxml2 vulnerabilities

14 August 2018

libxml2 vulnerabilities

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

  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in libxml2.

Software Description

  • libxml2 - GNOME XML library

Details

Matias Brutti discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to expose sensitive information. (CVE-2016-9318)

It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. (CVE-2017-16932)

It was discovered that libxml2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-18258, CVE-2018-14404, CVE-2018-14567)

Update instructions

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

Ubuntu 18.04 LTS
libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
libxml2-utils - 2.9.4+dfsg1-6.1ubuntu1.2
python-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
python3-libxml2 - 2.9.4+dfsg1-6.1ubuntu1.2
Ubuntu 16.04 LTS
libxml2 - 2.9.3+dfsg1-1ubuntu0.6
libxml2-utils - 2.9.3+dfsg1-1ubuntu0.6
python-libxml2 - 2.9.3+dfsg1-1ubuntu0.6
Ubuntu 14.04 LTS
libxml2 - 2.9.1+dfsg1-3ubuntu4.13
libxml2-utils - 2.9.1+dfsg1-3ubuntu4.13
python-libxml2 - 2.9.1+dfsg1-3ubuntu4.13

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References