[USN-3970-1] Ghostscript vulnerability

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[USN-3970-1] Ghostscript vulnerability

Marc Deslauriers-3
==========================================================================
Ubuntu Security Notice USN-3970-1
May 08, 2019

ghostscript vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- 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:

It was 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 19.04:
  ghostscript                     9.26~dfsg+0-0ubuntu7.1
  libgs9                          9.26~dfsg+0-0ubuntu7.1

Ubuntu 18.10:
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.10.9
  libgs9                          9.26~dfsg+0-0ubuntu0.18.10.9

Ubuntu 18.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.9
  libgs9                          9.26~dfsg+0-0ubuntu0.18.04.9

Ubuntu 16.04 LTS:
  ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.9
  libgs9                          9.26~dfsg+0-0ubuntu0.16.04.9

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

References:
  https://usn.ubuntu.com/usn/usn-3970-1
  CVE-2019-3839

Package Information:
  https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu7.1
  https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.10.9
  https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.18.04.9
  https://launchpad.net/ubuntu/+source/ghostscript/9.26~dfsg+0-0ubuntu0.16.04.9


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