Ubuntu 22.04 LTS USN-5496-1 Moderate: Cloud-Init Sensitive Info Exposure

ubuntu

June 29, 2022

cloud-init could be made to expose sensitive information.

Summary

cloud-init could be made to expose sensitive information.

Software Description:

- cloud-init: initialization and customization tool for cloud instances

Details:

Mike Stroyan discovered that cloud-init could log password hashes when

reporting schema failures. An attacker with access to these logs could

potentially use this to gain user credentials.

Topics Covered

security advisory moderate Ubuntu cloud-init sensitive information exposure

Update Instructions

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

Ubuntu 22.04 LTS:
  cloud-init                      22.2-0ubuntu1~22.04.3

Ubuntu 21.10:
  cloud-init                      22.2-0ubuntu1~21.10.3

Ubuntu 20.04 LTS:
  cloud-init                      22.2-0ubuntu1~20.04.3

Ubuntu 18.04 LTS:
  cloud-init                      22.2-0ubuntu1~18.04.3

In general, a standard system update will make the necessary changes.
Please note that sensitive information may have been logged to remote
logging aggregators as well as to the system journal, and removal of
such information may be required. Similarly, cloud-init configurations
that log in non-default locations may also require the removal of
sensitive information.