Este ldif funcionou para mim, com o comando anterior
dn: olcDatabase{1}hdb,cn=config
changetype: modify
replace: olcAccess
olcAccess: {0}to attrs=userPassword,shadowLastChange
by dn="cn=admin,dc=somesite,dc=com" write
by dn="uid=anotheruser,ou=Users,dc=somesite,dc=com" write
by anonymous auth
by self write
by * none
olcAccess: {1}to dn.base="" by * read
olcAccess: {2}to *
by self write
by dn="cn=admin,dc=somesite,dc=com" write
by dn="cn=anotheruser,ou=Users,dc=somesite,dc=com" write
by * read