[USN-4154-1] Sudo vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Mon Oct 14 16:02:46 UTC 2019

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


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


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.


Package Information:
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