USN-3712-2: libpng vulnerability

11 July 2018

libpng vulnerability

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

  • Ubuntu 12.04 ESM


libpng could be made to crash if it received a specially crafted file.

Software Description

  • libpng - PNG (Portable Network Graphics) file library


USN-3712-1 fixed a vulnerability in libpng. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Patrick Keshishian discovered that libpng incorrectly handled certain PNG files. An attacker could possibly use this to cause a denial of service.

Update instructions

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

Ubuntu 12.04 ESM
libpng12-0 - 1.2.46-3ubuntu4.3

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.