Description of problem:
Authentication using JBoss CLI and management web console works differently, prohibiting authentication with correct password on several occasions if password contains characters such as umlauts (ü). Also, case was reported when LDAP authentication was failing for such passwords as well.

Version-Release number of selected component (if applicable):
JBoss EAP 6.4 with patch 2 applied

Steps to Reproduce:
1. Using add-user.sh script, register a new management user with password like 'test123!ü'. Other details of user creation shouldn't matter.
2. Try connecting with this user using JBoss CLI. Try logging with this user using web management console.

Actual results:
On some systems, CLI authentication fails while web auth is working. On others, vice versa. Issue was seen on Fedora 20 and Ubuntu 14.04 with en_US & de_DE UTF-8 locales were. Similar behaviour was also reported on Windows 7 and Windows 2012 R2.

Expected results:
All authentication attempts successful, just as with passwords containing no umlauts.