USN-4154-1: Sudo vulnerability

  • Thread starter Ubuntu security notices
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Ubuntu security notices

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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

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.

References


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