USN-6658-2: libxml2 vulnerability

Publication date

11 March 2024

Overview

libxml2 could be made to crash or run programs if it opened a specially crafted file.


Packages

Details

USN-6658-1 fixed a vulnerability in libxml2. This update
provides the corresponding updates for Ubuntu 14.04 LTS,
Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that libxml2 incorrectly handled certain XML documents. A
remote attacker could possibly use this issue to cause libxml2 to crash,
resulting in a denial of service, or possibly execute arbitrary code.

USN-6658-1 fixed a vulnerability in libxml2. This update
provides the corresponding updates for Ubuntu 14.04 LTS,
Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that libxml2 incorrectly handled certain XML documents. A
remote attacker could possibly use this issue to cause libxml2 to crash,
resulting in a denial of service, or possibly execute arbitrary code.

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 libxml2 –  2.9.4+dfsg1-6.1ubuntu1.9+esm1  
16.04 xenial libxml2 –  2.9.3+dfsg1-1ubuntu0.7+esm6  
14.04 trusty libxml2 –  2.9.1+dfsg1-3ubuntu4.13+esm6  

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