CVE-2015-1545
The deref_parseCtrl function in servers/slapd/overlays/deref.c in OpenLDAP 2.4.13 through 2.4.40 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an empty attribute list in a deref control in a search request.
Date published : 2015-02-12
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html