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Ubuntu Security Notice USN-3926-1
March 29, 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

Summary:

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

Details:

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

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

References:
  https://usn.ubuntu.com/usn/usn-3926-1
  CVE-2018-1000100, CVE-2018-13005, CVE-2018-13006, CVE-2018-20760,
  CVE-2018-20761, CVE-2018-20762, CVE-2018-20763, CVE-2018-7752

Package Information:
  https://launchpad.net/ubuntu/+source/gpac/0.5.2-426-gc5ad4e4+dfsg5-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/gpac/0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
  https://launchpad.net/ubuntu/+source/gpac/0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1