USN-3476-1: postgresql-common vulnerabilities

Ubuntu Security Notice USN-3476-1

9th November, 2017

postgresql-common vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

postgresql-common could be made to overwrite files as the administrator.

Software description

  • postgresql-common - PostgreSQL database-cluster manager

Details

Dawid Golunski discovered that the postgresql-common pg_ctlcluster script
incorrectly handled symlinks. A local attacker could possibly use this
issue to escalate privileges. This issue only affected Ubuntu 14.04 LTS and
Ubuntu 16.04 LTS. (CVE-2016-1255)

It was discovered that the postgresql-common helper scripts incorrectly
handled symlinks. A local attacker could possibly use this issue to
escalate privileges. (CVE-2017-8806)

Update instructions

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

Ubuntu 17.10:
postgresql-common 184ubuntu1.1
Ubuntu 17.04:
postgresql-common 179ubuntu0.1
Ubuntu 16.04 LTS:
postgresql-common 173ubuntu0.1
Ubuntu 14.04 LTS:
postgresql-common 154ubuntu1.1

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

CVE-2016-1255, CVE-2017-8806