USN-3398-1: graphite2 vulnerabilities

21 August 2017

graphite2 vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

graphite2 could be made to crash or run programs if it opened a specially crafted font.

Software Description

  • graphite2 - Font rendering engine for Complex Scripts

Details

Holger Fuhrmannek and Tyson Smith discovered that graphite2 incorrectly handled certain malformed fonts. If a user or automated system were tricked into opening a specially-crafted font file, a remote attacker could use this issue to cause graphite2 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 17.04
libgraphite2-3 - 1.3.10-0ubuntu0.17.04.1
Ubuntu 16.04 LTS
libgraphite2-3 - 1.3.10-0ubuntu0.16.04.1
Ubuntu 14.04 LTS
libgraphite2-3 - 1.3.10-0ubuntu0.14.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart applications using graphite2, such as LibreOffice, to make all the necessary changes.

References