Directory traversal vulnerability in lib/mail/network/delivery_methods/file_delivery.rb in the Mail gem before 2.4.4 for Ruby allows remote attackers to read arbitrary files via a .. (dot dot) in the to parameter.
https://bugzilla.redhat.com/show_bug.cgi?id=816352
https://bugzilla.novell.com/show_bug.cgi?id=759092
http://www.openwall.com/lists/oss-security/2012/04/26/1
http://www.openwall.com/lists/oss-security/2012/04/25/8
http://secunia.com/advisories/48970
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080747.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080648.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080645.html