File krb5-MITKRB5-SA-2010-005.dif of Package krb5

Index: krb5-1.6.3/src/lib/gssapi/krb5/accept_sec_context.c
===================================================================
--- krb5-1.6.3.orig/src/lib/gssapi/krb5/accept_sec_context.c
+++ krb5-1.6.3/src/lib/gssapi/krb5/accept_sec_context.c
@@ -437,6 +437,13 @@ krb5_gss_accept_sec_context(minor_status
 	   goto fail;
        }
 
+       if (authdat->checksum == NULL) {
+          /* missing checksum counts as "inappropriate type" */
+          code = KRB5KRB_AP_ERR_INAPP_CKSUM;
+          major_status = GSS_S_FAILURE;
+          goto fail;
+       }
+
        /* verify that the checksum is correct */
 
        /*