Univention Corporate Server 3.2 erratum 373 (security)

This update addresses the following issues:
* Denial of service due to double-free after authentication timeout
  (CVE-2015-3165)
* Information disclosure due to missing checks of return codes from
  the standard library (CVE-2015-3166)
* Inconsistent error messages from contrib/pgcrypto (CVE-2015-3167)
* Fix rare failure to invalidate relation cache init file (Tom Lane)
  With just the wrong timing of concurrent activity, a VACUUM  FULL
  on a system catalog might fail to update the init file that's used to
  avoid cache-loading work for new sessions.  This would result in
  later sessions being unable to access that catalog at all.
  This is a very ancient bug, but it's so hard to trigger that no
  reproducible case had been seen until recently. (No CVE)