OpenSSH 8.0 released

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OpenSSH version 8.0

OpenSSH 8.0 has just been released. It will be available from the mirrors listed at https://www.openssh.com/ shortly.

Addressing SCP vulnerability

This new release of OpenSSH have a better security and some new key features:

  • Quantum-computing resistant key exchange method: This is one of the most promising feature.
  • New default RSA key size: 3072 bits.
  • Mitigation for a weakness in the scp tool and protocol, reported into the Common Vulnerabilities and Exposures CVE-2019-6111.

Potential Incompatibility

There is also reported potentially-incompatible changes with this new release:

  • The fix that been applied into scp, related to the mitigation of the issue reported into CVE-2019-6111, is also causing another issue.
    If the wildcard expansion differ between client and server, the client may refuse files from the server.
  • The “host/port” syntax been removed from sshd, that was initially implemented for the benifits of IPv6 users.

Read more about security, bugfixes, and new features details at OpenSSH.com.