USN-4193-1: Ghostscript vulnerability

14 November 2019

ghostscript vulnerability

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

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Ghostscript could be made to crash, access files, or run programs if it opened a specially crafted file.

Software Description

  • ghostscript - PostScript and PDF interpreter


Paul Manfred and Lukas Schauer discovered that Ghostscript incorrectly handled certain PostScript files. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files, execute arbitrary code, or cause a denial of service.

Update instructions

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

Ubuntu 19.10
ghostscript - 9.27~dfsg+0-0ubuntu3.1
libgs9 - 9.27~dfsg+0-0ubuntu3.1
Ubuntu 19.04
ghostscript - 9.26~dfsg+0-0ubuntu7.4
libgs9 - 9.26~dfsg+0-0ubuntu7.4
Ubuntu 18.04 LTS
ghostscript - 9.26~dfsg+0-0ubuntu0.18.04.12
libgs9 - 9.26~dfsg+0-0ubuntu0.18.04.12
Ubuntu 16.04 LTS
ghostscript - 9.26~dfsg+0-0ubuntu0.16.04.12
libgs9 - 9.26~dfsg+0-0ubuntu0.16.04.12

To update your system, please follow these instructions:

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