openssh - security update

OpenSSH secure shell client and server had a denial of service
vulnerability reported.

• CVE-2016-6515
  The password authentication function in sshd in OpenSSH before 7.3
  does not limit password lengths for password authentication, which
  allows remote attackers to cause a denial of service
  (crypt CPU consumption) via a long string.

For Debian 7 Wheezy, this problems has been fixed in version
6.0p1-4+deb7u6.

We recommend that you upgrade your openssh 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;