USN-3066-1: PostgreSQL vulnerabilities

Releases

• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• 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 versions:

Ubuntu 16.04

• postgresql-9.5 - 9.5.4-0ubuntu0.16.04

Ubuntu 14.04

• postgresql-9.3 - 9.3.14-0ubuntu0.14.04

Ubuntu 12.04

• postgresql-9.1 - 9.1.23-0ubuntu0.12.04

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.

References

• CVE-2016-5423
• CVE-2016-5424