Ubuntu Security Update USN-4193-1: Ghostscript vulnerability

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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
Summary


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
Details


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: https://wiki.ubuntu.com/Security/Upgrades.

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

References


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