USN-3907-1: WALinuxAgent vulnerability

12 March 2019

walinuxagent vulnerability

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

WALinuxAgent could be made to expose sensitive information.

Software Description

  • walinuxagent - Windows Azure Linux Agent

Details

It was discovered that WALinuxAgent created swap files with incorrect permissions. A local attacker could possibly use this issue to obtain sensitive information from the swap file.

Update instructions

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

Ubuntu 18.10
walinuxagent - 2.2.32-0ubuntu1~18.10.2
Ubuntu 18.04 LTS
walinuxagent - 2.2.32-0ubuntu1~18.04.2
Ubuntu 16.04 LTS
walinuxagent - 2.2.32-0ubuntu1~16.04.2
Ubuntu 14.04 LTS
walinuxagent - 2.2.32-0ubuntu1~14.04.2

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