The remote host is missing an update as announced via advisory SSA:2008-210-08.

https://secure1.securityspace.com/smysecure/catid.html?in=SSA:2008-210-08

New openssl packages are available for Slackware 11.0, 12.0, 12.1, and -current to fix security issues. More details about this issues may be found in the Common Vulnerabilities and Exposures (CVE) database: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0891 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1672 Upgraded OpenSSH packages have been provided to make sure that ssh is not broken my the update -- especially if your machine is a remote one, be SURE to upgrade to the new openssh package as well!