USN-3926-1: GPAC vulnerabilities

29 March 2019

gpac vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


GPAC could be made to crash or run programs as your login if it opened a specially crafted file.

Software Description

  • gpac - GPAC Project on Advanced Content


It was discovered that the GPAC MP4Box utility incorrectly handled certain memory operations. If an user or automated system were tricked into opening a specially crafted MP4 file, a remote attacker could use this issue to cause MP4Box 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
gpac - 0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1
gpac-modules-base - 0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1
libgpac4 - 0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1
Ubuntu 18.04 LTS
gpac - 0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
gpac-modules-base - 0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
libgpac4 - 0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
Ubuntu 16.04 LTS
gpac - 0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1
gpac-modules-base - 0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1
libgpac4 - 0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1

To update your system, please follow these instructions:

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