The default slapd configuration in the Debian openldap package 2.4.23-3 through 2.4.39-1.1 allows remote authenticated users to modify the user's permissions and other user attributes via unspecified vectors.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761406
http://www.ubuntu.com/usn/USN-2742-1
http://www.securityfocus.com/bid/73217