USN-7240-1: libxml2 vulnerabilities

USN-7240-1: libxml2 vulnerabilities
29 January 2025

Several security issues were fixed in libxml2.

Releases

• Ubuntu 24.04 LTS
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages
libxml2 - GNOME XML library

Details
It was discovered that libxml2 incorrectly handled certain memory
operations. A remote attacker could use this issue to cause libxml2 to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2022-49043)

It was discovered that the libxml2 xmllint tool incorrectly handled
certain memory operations. If a user or automated system were tricked into
running xmllint on a specially crafted xml file, a remote attacker could
cause xmllint to crash, resulting in a denial of service. (CVE-2024-34459)

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

Ubuntu 24.04

• libxml2 - 2.9.14+dfsg-1.3ubuntu3.1
  Ubuntu 22.04
• libxml2 - 2.9.13+dfsg-1ubuntu0.5
  Ubuntu 20.04
• libxml2 - 2.9.10+dfsg-5ubuntu0.20.04.8
  In general, a standard system update will make all the necessary changes.