postgresql-9.1 - security update

Several vulnerabilities have been found in PostgreSQL-9.1, a SQL
database system.

• CVE-2015-5288
  Josh Kupershmidt discovered a vulnerability in the crypt() function
  in the pgCrypto extension. Certain invalid salt arguments can cause
  the server to crash or to disclose a few bytes of server memory.
• CVE-2016-0766
  A privilege escalation vulnerability for users of PL/Java was
  discovered. Certain custom configuration settings (GUCs) for PL/Java
  will now be modifiable only by the database superuser to mitigate
  this issue.
• CVE-2016-0773
  Tom Lane and Greg Stark discovered a flaw in the way PostgreSQL
  processes specially crafted regular expressions. Very large
  character ranges in bracket expressions could cause infinite
  loops or memory overwrites. A remote attacker can exploit this
  flaw to cause a denial of service or, potentially, to execute
  arbitrary code.

For the oldstable distribution (wheezy), these problems have been fixed
in version 9.1.20-0+deb7u1.

We recommend that you upgrade your postgresql-9.1 packages.