USN-3501-1: libxcursor vulnerability

29 November 2017

libxcursor vulnerability

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS


libxcursor could be made to crash or run programs if it opened a specially crafted file.

Software Description

  • libxcursor - X11 cursor management library


It was discovered that libxcursor incorrectly handled certain files. An attacker could use these issues to cause libxcursor 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 17.10
libxcursor1 - 1:1.1.14-3ubuntu0.1
Ubuntu 17.04
libxcursor1 - 1:1.1.14-1ubuntu0.17.04.1
Ubuntu 16.04 LTS
libxcursor1 - 1:1.1.14-1ubuntu0.16.04.1
Ubuntu 14.04 LTS
libxcursor1 - 1:1.1.14-1ubuntu0.14.04.1

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.