Ubuntu alert USN-4154-1 (sudo)

From:
             
 
"Leonidas S. Barbosa" <leo.barbosa@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4154-1] Sudo vulnerability 
Date:
             
 
Mon, 14 Oct 2019 13:02:46 -0300
Message-ID:
             
 
<20191014160245.GA13720@blu3l41n>
==========================================================================
Ubuntu Security Notice USN-4154-1
October 14, 2019

sudo vulnerability
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Sudo could be made to run commands as root if it called with
a specially crafted user ID.

Software Description:
- sudo: Provide limited super user privileges to specific users

Details:

Joe Vennix discovered that Sudo incorrectly handled
certain user IDs. An attacker could potentially exploit this
to execute arbitrary commands as the root user.

Update instructions:

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

Ubuntu 19.04:
  sudo                            1.8.27-1ubuntu1.1
  sudo-ldap                       1.8.27-1ubuntu1.1

Ubuntu 18.04 LTS:
  sudo                            1.8.21p2-3ubuntu1.1
  sudo-ldap                       1.8.21p2-3ubuntu1.1

Ubuntu 16.04 LTS:
  sudo                            1.8.16-0ubuntu1.8
  sudo-ldap                       1.8.16-0ubuntu1.8

Ubuntu 14.04 ESM:
  sudo                            1.8.9p5-1ubuntu1.5+esm2
  sudo-ldap                       1.8.9p5-1ubuntu1.5+esm2

Ubuntu 12.04 ESM:
  sudo                            1.8.3p1-1ubuntu3.8
  sudo-ldap                       1.8.3p1-1ubuntu3.8

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

References:
  https://usn.ubuntu.com/4154-1
  CVE-2019-14287

Package Information:
  https://launchpad.net/ubuntu/+source/sudo/1.8.27-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/sudo/1.8.21p2-3ubunt...
  https://launchpad.net/ubuntu/+source/sudo/1.8.16-0ubuntu1.8
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