The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://secunia.com/advisories/43077/ http://groups.google.com/group/mail-ruby/browse_thread/thread/e93bbd05706478dd?pli=1 http://www.vuxml.org/freebsd/1cae628c-3569-11e0-8e81-0022190034c0.html

The following package is affected: rubygem-mail CVE-2011-0739 The deliver function in the sendmail delivery agent (lib/mail/network/delivery_methods/sendmail.rb) in Ruby Mail gem 2.2.14 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail address.