Security update for openssh (critical)

This update for openssh fixes the following issues:

• CVE-2016-0777: A malicious or compromised server could cause the OpenSSH
  client to expose part or all of the client’s private key through the
  roaming feature (bsc#961642)
• CVE-2016-0778: A malicious or compromised server could could trigger a
  buffer overflow in the OpenSSH client through the roaming feature
  (bsc#961645)

This update disables the undocumented feature supported by the OpenSSH
client and a commercial SSH server.