USN-3066-1: PostgreSQL vulnerabilities

Ubuntu Security Notice USN-3066-1

18th August, 2016

postgresql-9.1, postgresql-9.3, postgresql-9.5 vulnerabilities

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

Ubuntu 16.04 LTS
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS

Summary

Several security issues were fixed in PostgreSQL.

Software description

postgresql-9.1
– Object-relational SQL database
postgresql-9.3
– Object-relational SQL database
postgresql-9.5
– object-relational SQL database

Details

Heikki Linnakangas discovered that PostgreSQL incorrectly handled certain
nested CASE/WHEN expressions. A remote attacker could possibly use this
issue to cause PostgreSQL to crash, resulting in a denial of service.
(CVE-2016-5423)

Nathan Bossart discovered that PostgreSQL incorrectly handled special
characters in database and role names. A remote attacker could possibly use
this issue to escalate privileges. (CVE-2016-5424)

Update instructions

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

Ubuntu 16.04 LTS:: postgresql-9.5

9.5.4-0ubuntu0.16.04
Ubuntu 14.04 LTS:: postgresql-9.3

9.3.14-0ubuntu0.14.04
Ubuntu 12.04 LTS:: postgresql-9.1

9.1.23-0ubuntu0.12.04

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart PostgreSQL to
make all the necessary changes.