USN-3866-3: Ghostscript regression

26 February 2019

ghostscript regression

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

USN-3866-2 introduced a regression in Ghostscript.

Software Description

  • ghostscript - PostScript and PDF interpreter

Details

USN-3866-2 fixed a regression in Ghostscript. The Ghostscript update introduced a new regression that resulted in certain pages being printed with a blue background. This update fixes the problem.

Original advisory details:

Tavis Ormandy 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 18.10
ghostscript - 9.26~dfsg+0-0ubuntu0.18.10.7
libgs9 - 9.26~dfsg+0-0ubuntu0.18.10.7
Ubuntu 18.04 LTS
ghostscript - 9.26~dfsg+0-0ubuntu0.18.04.7
libgs9 - 9.26~dfsg+0-0ubuntu0.18.04.7
Ubuntu 16.04 LTS
ghostscript - 9.26~dfsg+0-0ubuntu0.16.04.7
libgs9 - 9.26~dfsg+0-0ubuntu0.16.04.7
Ubuntu 14.04 LTS
ghostscript - 9.26~dfsg+0-0ubuntu0.14.04.7
libgs9 - 9.26~dfsg+0-0ubuntu0.14.04.7

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