[USN-3962-1] libpng vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Tue Apr 30 18:22:18 UTC 2019

Ubuntu Security Notice USN-3962-1
April 30, 2019

libpng1.6 vulnerability

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS


libpng be made to crash or run programs if it opened a specially crafted

Software Description:
- libpng1.6: PNG (Portable Network Graphics) file library


It was discovered that libpng incorrectly handled certain memory
operations. If a user or automated system were tricked into opening a
specially crafted PNG file, a remote attacker could use this issue to
cause libpng to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 18.10:
  libpng16-16                     1.6.34-2ubuntu0.1

Ubuntu 18.04 LTS:
  libpng16-16                     1.6.34-1ubuntu0.18.04.2

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


Package Information:

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