USN-3504-2: libxml2 vulnerability
Ubuntu Security Notice USN-3504-2
5th December, 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
curl could be made to crash if it received specially crafted input.
- libxml2 - GNOME XML library
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.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- 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.