USN-3504-2: libxml2 vulnerability

5 December 2017

libxml2 vulnerability

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

  • Ubuntu 12.04 ESM

Summary

curl could be made to crash if it received specially crafted input.

Software Description

  • libxml2 - GNOME XML library

Details

USN-3504-1 fixed a vulnerability in libxml2. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Wei Lei discovered that libxml2 incorrecty handled certain parameter entities. An attacker could use this issue with specially constructed XML data to cause libxml2 to consume resources, leading to a denial of service.

Update instructions

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

Ubuntu 12.04 ESM
libxml2 - 2.7.8.dfsg-5.1ubuntu4.19
libxml2-utils - 2.7.8.dfsg-5.1ubuntu4.19
python-libxml2 - 2.7.8.dfsg-5.1ubuntu4.19

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