The remote host is missing an update to proftpd announced via advisory FEDORA-2009-11666.
Apply the appropriate updates. This update can be installed with the yum update program. Use su -c 'yum update proftpd' at the command line. For more information, refer to Managing Software with yum, available at http://docs.fedoraproject.org/yum/. https://secure1.securityspace.com/smysecure/catid.html?in=FEDORA-2009-11666
Update Information: This update fixes CVE-2009-3639, in which proftpd's mod_tls, when the dNSNameRequired TLS option is enabled, does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 client certificate. This allows remote attackers to bypass intended client-hostname restrictions via a crafted certificate issued by a legitimate Certification Authority. ChangeLog: * Wed Oct 21 2009 Paul Howarth 1.3.2b-1 - Update to 1.3.2b - Fixed regression causing command-line define options not to work (bug 3221) - Fixed SSL/TLS cert subjectAltName verification (bug 3275, CVE-2009-3639) - Use correct cached user values with SQLNegativeCache on (bug 3282) - Fix slower transfers of multiple small files (bug 3284) - Support MaxTransfersPerHost, MaxTransfersPerUser properly (bug 3287) - Handle symlinks to directories with trailing slashes properly (bug 3297) - Drop upstreamed defines patch (bug 3221)
Updated on 2015-03-25