What are the bare minimum rights you need to change an other persons LDAP password?. I'm working on a tool that allows a user to change his password. as the tool needs to be written in PHP the only problem is that you can't use a user account to change the password. to work around this we want to use an manger/admin account that can only change the passwords of all the other users.

now the problem. we could not find the right rights to set so that the account was allowed to change the passwords. the only way it worked for us was if we made him domain-admin and that is something we don't want. So what are the minimum rights that some one needs to change a other person password with PHP?

EDIT: Changed the title to fit the question better.