This is a flaw in the SSH standard itself, not in a specific version of software. Countermeasures have been put in place to mitigate the flaw in OpenSSH however

This is a flaw in the SSH standard itself, not in a specific version of software. Countermeasures have been put in place to mitigate the flaw in OpenSSH however. "They've fixed [OpenSSH]; they've put countermeasures in place to stop our attack," said Patterson. "But the standard has not changed."