The LDAP server (ns-slapd) in Sun Java System Directory Server 5.2 Patch4 and earlier and ONE Directory Server 5.1 and 5.2 allows remote attackers to cause a denial of service (crash) via malformed queries, probably malformed BER queries, which trigger a free of uninitialized memory locations.
Unspecified vulnerability in Sun ONE/Java System Directory Server (slapd) 6.0, and 5.x before 5.2 Patch 5, allows remote attackers to determine the existence of attributes of an entry via unspecified vectors.
The Online Help feature in Sun Java System Directory Server 5.2 and Enterprise Edition 5 allows remote attackers to determine the existence of files and directories, and possibly obtain partial contents of files, via unspecified vectors.