[SECURITY] [DLA 592-1] postgresql-9.1 security update

Package : postgresql-9.1
Version : 9.1.23-0+deb7u1

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
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