[USN-5422-1] libxml2 vulnerabilities


========================================================================== Ubuntu Security Notice USN-5422-1 May 16, 2022
libxml2 vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 22.04 LTS – Ubuntu 21.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS – Ubuntu 16.04 ESM – Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in libxml2.
Software Description: – libxml2: GNOME XML library
Details:
Shinji Sato discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, and Ubuntu 16.04 ESM. (CVE-2022-23308)
It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-29824)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04 LTS: libxml2 2.9.13+dfsg-1ubuntu0.1 libxml2-utils 2.9.13+dfsg-1ubuntu0.1
Ubuntu 21.10: libxml2 2.9.12+dfsg-4ubuntu0.2 libxml2-utils 2.9.12+dfsg-4ubuntu0.2
Ubuntu 20.04 LTS: libxml2 2.9.10+dfsg-5ubuntu0.20.04.3 libxml2-utils 2.9.10+dfsg-5ubuntu0.20.04.3
Ubuntu 18.04 LTS: libxml2 2.9.4+dfsg1-6.1ubuntu1.6 libxml2-utils 2.9.4+dfsg1-6.1ubuntu1.6
Ubuntu 16.04 ESM: libxml2 2.9.3+dfsg1-1ubuntu0.7+esm2 libxml2-utils 2.9.3+dfsg1-1ubuntu0.7+esm2
Ubuntu 14.04 ESM: libxml2 2.9.1+dfsg1-3ubuntu4.13+esm3 libxml2-utils 2.9.1+dfsg1-3ubuntu4.13+esm3
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-5422-1 CVE-2022-23308, CVE-2022-29824
Package Information: launchpad.net/ubuntu/+source/libxml2/2.9.13+dfsg-1ubuntu0.1 launchpad.net/ubuntu/+source/libxml2/2.9.12+dfsg-4ubuntu0.2 launchpad.net/ubuntu/+source/libxml2/2.9.10+dfsg-5ubuntu0.20.04.3 launchpad.net/ubuntu/+source/libxml2/2.9.4+dfsg1-6.1ubuntu1.6