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USN-3712-2: libpng vulnerability

11 July 2018

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



  • 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

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


Related notices

  • USN-3712-1: libpng16-16, libpng12-0, libpng-dev, libpng12-0-udeb, libpng-tools, libpng3, libpng1.6, libpng12-dev, libpng16-16-udeb, libpng