The SASL authentication functionality in 389 Directory Server before 1.2.11.26 allows remote authenticated users to connect as an arbitrary user and gain privileges via the authzid parameter in a SASL/GSSAPI bind.
https://fedorahosted.org/389/ticket/47739
https://fedorahosted.org/389/changeset/76acff12a86110d4165f94e2cba13ef5c7ebc38a/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-0193
http://secunia.com/advisories/57427