The following updates has been released for Ubuntu Linux:

USN-4015-1: DBus vulnerability
USN-4016-1: Vim vulnerabilities
USN-4016-2: Neovim vulnerability

USN-4015-1: DBus vulnerability

==========================================================================
Ubuntu Security Notice USN-4015-1
June 11, 2019

dbus 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:

DBus could allow unintended access to services.

Software Description:
- dbus: simple interprocess messaging system

Details:

Joe Vennix discovered that DBus incorrectly handled DBUS_COOKIE_SHA1
authentication. A local attacker could possibly use this issue to bypass
authentication and connect to DBus servers with elevated privileges.

Update instructions:

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

Ubuntu 19.04:
dbus 1.12.12-1ubuntu1.1
libdbus-1-3 1.12.12-1ubuntu1.1

Ubuntu 18.10:
dbus 1.12.10-1ubuntu2.1
libdbus-1-3 1.12.10-1ubuntu2.1

Ubuntu 18.04 LTS:
dbus 1.12.2-1ubuntu1.1
libdbus-1-3 1.12.2-1ubuntu1.1

Ubuntu 16.04 LTS:
dbus 1.10.6-1ubuntu3.4
libdbus-1-3 1.10.6-1ubuntu3.4

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

References:
https://usn.ubuntu.com/4015-1
CVE-2019-12749

Package Information:
https://launchpad.net/ubuntu/+source/dbus/1.12.12-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus/1.12.10-1ubuntu2.1
https://launchpad.net/ubuntu/+source/dbus/1.12.2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/dbus/1.10.6-1ubuntu3.4

USN-4016-1: Vim vulnerabilities

=========================================================================
Ubuntu Security Notice USN-4016-1
June 11, 2019

vim vulnerabilities
=========================================================================
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:

Several security issues were fixed in Vim.

Software Description:
- vim: Vi IMproved - enhanced vi editor

Details:

It was discovered that Vim incorrectly handled certain files.
An attacker could possibly use this issue to execute arbitrary code.
This issue only affected Ubuntu 16.04 LTS. (CVE-2017-5953)

It was discovered that Vim incorrectly handled certain files.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2019-12735)

Update instructions:

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

Ubuntu 19.04:
vim 2:8.1.0320-1ubuntu3.1
vim-common 2:8.1.0320-1ubuntu3.1
vim-gui-common 2:8.1.0320-1ubuntu3.1
vim-runtime 2:8.1.0320-1ubuntu3.1

Ubuntu 18.10:
vim 2:8.0.1766-1ubuntu1.1
vim-common 2:8.0.1766-1ubuntu1.1
vim-gui-common 2:8.0.1766-1ubuntu1.1
vim-runtime 2:8.0.1766-1ubuntu1.1

Ubuntu 18.04 LTS:
vim 2:8.0.1453-1ubuntu1.1
vim-common 2:8.0.1453-1ubuntu1.1
vim-gui-common 2:8.0.1453-1ubuntu1.1
vim-runtime 2:8.0.1453-1ubuntu1.1

Ubuntu 16.04 LTS:
vim 2:7.4.1689-3ubuntu1.3
vim-common 2:7.4.1689-3ubuntu1.3
vim-gui-common 2:7.4.1689-3ubuntu1.3
vim-runtime 2:7.4.1689-3ubuntu1.3

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

References:
https://usn.ubuntu.com/4016-1
CVE-2017-5953, CVE-2019-12735

Package Information:
https://launchpad.net/ubuntu/+source/vim/2:8.1.0320-1ubuntu3.1
https://launchpad.net/ubuntu/+source/vim/2:8.0.1766-1ubuntu1.1
https://launchpad.net/ubuntu/+source/vim/2:8.0.1453-1ubuntu1.1
https://launchpad.net/ubuntu/+source/vim/2:7.4.1689-3ubuntu1.3

USN-4016-2: Neovim vulnerability

==========================================================================
Ubuntu Security Notice USN-4016-2
June 11, 2019

Neovim vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10

Summary:

Neovim could be made to run programs as your login if it
opened a specially crafted file.

Software Description:
- neovim: heavily refactored vim fork

Details:

It was discovered that Neovim incorrectly handled certain files. An attacker
could possibly use this issue to execute arbitrary code. (CVE-2019-12735)

Update instructions:

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

Ubuntu 19.04:
neovim 0.3.4-1ubuntu0.19.04.1
neovim-runtime 0.3.4-1ubuntu0.19.04.1

Ubuntu 18.10:
neovim 0.3.1-1ubuntu0.1
neovim-runtime 0.3.1-1ubuntu0.1

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

References:
https://usn.ubuntu.com/4016-2
https://usn.ubuntu.com/4016-1
CVE-2019-12735

Package Information:
https://launchpad.net/ubuntu/+source/neovim/0.3.4-1ubuntu0.19.04.1
https://launchpad.net/ubuntu/+source/neovim/0.3.1-1ubuntu0.1