postgresql-9.1 - security update

Several vulnerabilities have been found in PostgreSQL, an SQL
database system.

• CVE-2016-5423
  Karthikeyan Jambu Rajaraman discovered that nested CASE-WHEN
  expressions are not properly evaluated, potentially leading to a
  crash or allowing to disclose portions of server memory.
• CVE-2016-5424
  Nathan Bossart discovered that special characters in database and
  role names are not properly handled, potentially leading to the
  execution of commands with superuser privileges, when a superuser
  executes pg_dumpall or other routine maintenance operations.

For Debian 7 Wheezy, these problems have been fixed in version
9.1.23-0+deb7u1.

We recommend that you upgrade your postgresql-9.1 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;