[USN-5548-1] libxml2 vulnerability

========================================================================== Ubuntu Security Notice USN-5548-1 August 04, 2022
libxml2 vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 20.04 LTS – Ubuntu 18.04 LTS – Ubuntu 16.04 ESM
libxml2 could be made to execute arbitrary code if it received a specially crafted file.
Software Description: – libxml2: GNOME XML library
It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: libxml2 2.9.10+dfsg-5ubuntu0.20.04.4 libxml2-utils 2.9.10+dfsg-5ubuntu0.20.04.4
Ubuntu 18.04 LTS: libxml2 2.9.4+dfsg1-6.1ubuntu1.7 libxml2-utils 2.9.4+dfsg1-6.1ubuntu1.7
Ubuntu 16.04 ESM: libxml2 2.9.3+dfsg1-1ubuntu0.7+esm3 libxml2-utils 2.9.3+dfsg1-1ubuntu0.7+esm3
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5548-1 CVE-2016-3709
Package Information: launchpad.net/ubuntu/+source/libxml2/2.9.10+dfsg-5ubuntu0.20.04.4 launchpad.net/ubuntu/+source/libxml2/2.9.4+dfsg1-6.1ubuntu1.7