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             AUSCERT External Security Bulletin Redistribution

                      USN-4154-1: Sudo vulnerability
                              15 October 2019


        AusCERT Security Bulletin Summary

Product:           sudo
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-14287  

Original Bulletin: 

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running sudo check for an updated version of the software for their
         operating system.

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USN-4154-1: Sudo vulnerability
14 October 2019

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

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


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

Software Description

  o sudo - Provide limited super user privileges to specific users


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

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

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.


  o CVE-2019-14287

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