USN-2772-1: PostgreSQL vulnerabilities

16 October 2015

postgresql-9.1, postgresql-9.3, postgresql-9.4 vulnerabilities

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

  • Ubuntu 15.04
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


PostgreSQL could be made to crash or expose private information if it handled specially crafted data.

Software Description

  • postgresql-9.4 - Object-relational SQL database
  • postgresql-9.3 - Object-relational SQL database
  • postgresql-9.1 - Object-relational SQL database


Josh Kupershmidt discovered the pgCrypto extension could expose several bytes of server memory if the crypt() function was provided a too-short salt. An attacker could use this flaw to read private data. (CVE-2015-5288)

Oskari Saarenmaa discovered that the json and jsonb handlers could exhaust available stack space. An attacker could use this flaw to perform a denial of service attack. This issue only affected Ubuntu 14.04 LTS and Ubuntu 15.04. (CVE-2015-5289)

Update instructions

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

Ubuntu 15.04
postgresql-9.4 - 9.4.5-0ubuntu0.15.04
Ubuntu 14.04 LTS
postgresql-9.3 - 9.3.10-0ubuntu0.14.04
Ubuntu 12.04 LTS
postgresql-9.1 - 9.1.19-0ubuntu0.12.04

To update your system, please follow these instructions:

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.