openssh - security update

Two vulnerabilities were discovered in OpenSSH, an implementation of the
SSH protocol suite. The Common Vulnerabilities and Exposures project
identifies the following problems:

• CVE-2014-2532
  Jann Horn discovered that OpenSSH incorrectly handled wildcards in
  AcceptEnv lines. A remote attacker could use this issue to trick
  OpenSSH into accepting any environment variable that contains the
  characters before the wildcard character.
• CVE-2014-2653
  Matthew Vernon reported that if a SSH server offers a
  HostCertificate that the ssh client doesn’t accept, then the client
  doesn’t check the DNS for SSHFP records. As a consequence a
  malicious server can disable SSHFP-checking by presenting a
  certificate.

Note that a host verification prompt is still displayed before
connecting.

For the oldstable distribution (squeeze), these problems have been fixed in
version 1:5.5p1-6+squeeze5.

For the stable distribution (wheezy), these problems have been fixed in
version 1:6.0p1-4+deb7u1.

For the unstable distribution (sid), these problems have been fixed in
version 1:6.6p1-1.

We recommend that you upgrade your openssh packages.