A flaw was found in the way that the Red Hat Directory Server handled simple paged result searches. If an unauthenticated user were able to send multiple simple paged search requests to Directory Server, it could cause the server to crash.
The 'upstream' bug is bug #666076.
Upstream bug report:
This issue has been addressed in following products:
Red Hat Directory Server 8 for RHEL 4
Red Hat Directory Server 8 for RHEL 5
Via RHSA-2011:0293 https://rhn.redhat.com/errata/RHSA-2011-0293.html