Directory traversal vulnerability in the _list_file_get function in lib/Majordomo.pm in Majordomo 2 before 20110131 allows remote attackers to read arbitrary files via .. (dot dot) sequences in the help command, as demonstrated using (1) a crafted email and (2) cgi-bin/mj_wwwusr in the web interface.
https://exchange.xforce.ibmcloud.com/vulnerabilities/65113
https://bug628064.bugzilla.mozilla.org/attachment.cgi?id=506481
http://www.vupen.com/english/advisories/2011/0288
http://www.securitytracker.com/id?1025024
http://www.securityfocus.com/archive/1/516150/100/0/threaded
http://www.kb.cert.org/vuls/id/363726
http://www.exploit-db.com/exploits/16103
http://securityreason.com/securityalert/8061