A flaw in how 389-ds-base and Red Hat Directory Server handled the checking of access rights on entries using GER (Get Effective Rights), a way to extend directory searches to also display what access rights a user has to a specified entry. When an attribute list is given in the search request, and if there are several attributes whose names contain the '@' character, 389-ds-base and Red Hat Directory Server would crash. An attacker able to contact the server would be able to submit this type of search request with no authentication required. https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4485 (Obviously no CVE is required, posting here as this was previously sent to the distros@ mailing list) -- Vincent Danen / Red Hat Security Response Team