USN-4194-1: postgresql-common vulnerability

14 November 2019

postgresql-common vulnerability

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

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


postgresql-common could be made to create arbitrary directories.

Software Description

  • postgresql-common - PostgreSQL database-cluster manager


Rich Mirch discovered that the postgresql-common pg_ctlcluster script incorrectly handled directory creation. A local attacker could possibly use this issue to escalate privileges.

Update instructions

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

Ubuntu 19.10
postgresql-common - 204ubuntu0.1
Ubuntu 19.04
postgresql-common - 199ubuntu0.1
Ubuntu 18.04 LTS
postgresql-common - 190ubuntu0.1
Ubuntu 16.04 LTS
postgresql-common - 173ubuntu0.3

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.