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the following security issues were fixed in krb5 : - Fix a KDC NULL pointer dereference [CVE-2013-1417] that could affect realms with an uncommon configuration. (bnc#850660) bug-850660-CVE-2013-1417-KDC-null-deref-due-to-referrals .dif - Fix a KDC NULL pointer dereference [CVE-2013-1418] that could affect KDCs that serve multiple realms. (bnc#849240) bug-849240-CVE-2013-1418-fix-multi-realm-kdc-null-deref. dif