return 0;
}
-krb5_error_code KRB5_LIB_FUNCTION
-krb5_keytype_to_enctypes (krb5_context context,
- krb5_keytype keytype,
- unsigned *len,
- krb5_enctype **val)
-{
- int i;
- unsigned n = 0;
- krb5_enctype *ret;
-
- for (i = num_etypes - 1; i >= 0; --i) {
- if (etypes[i]->keytype->type == keytype
- && !(etypes[i]->flags & F_PSEUDO))
- ++n;
- }
- ret = malloc(n * sizeof(*ret));
- if (ret == NULL && n != 0) {
- krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
- return ENOMEM;
- }
- n = 0;
- for (i = num_etypes - 1; i >= 0; --i) {
- if (etypes[i]->keytype->type == keytype
- && !(etypes[i]->flags & F_PSEUDO))
- ret[n++] = etypes[i]->type;
- }
- *len = n;
- *val = ret;
- return 0;
-}
-
krb5_error_code KRB5_LIB_FUNCTION
krb5_enctype_valid(krb5_context context,
krb5_enctype etype)
return 0;
}
+/**
+ * Return the coresponding encryption type for a checksum type.
+ *
+ * @param context Kerberos context
+ * @param ctype The checksum type to get the result enctype for
+ * @param etype The returned encryption, when the matching etype is
+ * not found, etype is set to ETYPE_NULL.
+ *
+ * @return Return an error code for an failure or 0 on success.
+ * @ingroup krb5_crypto
+ */
+
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_cksumtype_to_enctype(krb5_context context,
+ krb5_cksumtype ctype,
+ krb5_enctype *etype)
+{
+ int i;
+
+ *etype = ETYPE_NULL;
+
+ for(i = 0; i < num_etypes; i++) {
+ if(etypes[i]->keyed_checksum &&
+ etypes[i]->keyed_checksum->type == ctype)
+ {
+ *etype = etypes[i]->type;
+ return 0;
+ }
+ }
+
+ krb5_set_error_message (context, KRB5_PROG_SUMTYPE_NOSUPP,
+ "ckecksum type %d not supported",
+ (int)ctype);
+ return KRB5_PROG_SUMTYPE_NOSUPP;
+}
+
+
krb5_error_code KRB5_LIB_FUNCTION
krb5_cksumtype_valid(krb5_context context,
krb5_cksumtype ctype)
return 0;
}
-
size_t KRB5_LIB_FUNCTION
krb5_crypto_length(krb5_context context,
krb5_crypto crypto,
"key type %s not supported", string);
return KRB5_PROG_KEYTYPE_NOSUPP;
}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_keytype_to_enctypes (krb5_context context,
+ krb5_keytype keytype,
+ unsigned *len,
+ krb5_enctype **val)
+{
+ int i;
+ unsigned n = 0;
+ krb5_enctype *ret;
+
+ for (i = num_etypes - 1; i >= 0; --i) {
+ if (etypes[i]->keytype->type == keytype
+ && !(etypes[i]->flags & F_PSEUDO))
+ ++n;
+ }
+ ret = malloc(n * sizeof(*ret));
+ if (ret == NULL && n != 0) {
+ krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+ return ENOMEM;
+ }
+ n = 0;
+ for (i = num_etypes - 1; i >= 0; --i) {
+ if (etypes[i]->keytype->type == keytype
+ && !(etypes[i]->flags & F_PSEUDO))
+ ret[n++] = etypes[i]->type;
+ }
+ *len = n;
+ *val = ret;
+ return 0;
+}
+
#endif
#include "lib/messaging/irpc.h"
#include "lib/stream/packet.h"
#include "librpc/gen_ndr/samr.h"
+#include "librpc/gen_ndr/ndr_irpc.h"
+#include "librpc/gen_ndr/ndr_krb5pac.h"
#include "lib/socket/netif.h"
#include "param/param.h"
#include "kdc/kdc.h"
+#include "librpc/gen_ndr/ndr_misc.h"
/* Disgusting hack to get a mem_ctx and lp_ctx into the hdb plugin, when
};
+static NTSTATUS kdc_check_generic_kerberos(struct irpc_message *msg,
+ struct kdc_check_generic_kerberos *r)
+{
+ struct PAC_Validate pac_validate;
+ DATA_BLOB srv_sig;
+ struct PAC_SIGNATURE_DATA kdc_sig;
+ struct kdc_server *kdc = talloc_get_type(msg->private, struct kdc_server);
+ enum ndr_err_code ndr_err;
+ krb5_enctype etype;
+ int ret;
+ hdb_entry_ex ent;
+ krb5_principal principal;
+ krb5_keyblock keyblock;
+ Key *key;
+
+ /* There is no reply to this request */
+ r->out.generic_reply = data_blob(NULL, 0);
+
+ ndr_err = ndr_pull_struct_blob(&r->in.generic_request, msg,
+ lp_iconv_convenience(kdc->task->lp_ctx),
+ &pac_validate,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_Validate);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+#if 0
+ /* Windows does not check this */
+ if (pac_validate.MessageType != 3) {
+ /* We don't implement any other message types - such as certificate validation - yet */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+#endif
+ if (pac_validate.ChecksumAndSignature.length != (pac_validate.ChecksumLength + pac_validate.SignatureLength)
+ || pac_validate.ChecksumAndSignature.length < pac_validate.ChecksumLength
+ || pac_validate.ChecksumAndSignature.length < pac_validate.SignatureLength ) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ srv_sig = data_blob_const(pac_validate.ChecksumAndSignature.data,
+ pac_validate.ChecksumLength);
+
+ if (pac_validate.SignatureType == CKSUMTYPE_HMAC_MD5) {
+ etype = ETYPE_ARCFOUR_HMAC_MD5;
+ } else {
+ ret = krb5_cksumtype_to_enctype(kdc->smb_krb5_context->krb5_context, pac_validate.SignatureType,
+ &etype);
+ if (ret != 0) {
+ return NT_STATUS_LOGON_FAILURE;
+ }
+ }
+
+ ret = krb5_make_principal(kdc->smb_krb5_context->krb5_context, &principal,
+ lp_realm(kdc->task->lp_ctx),
+ "krbtgt", lp_realm(kdc->task->lp_ctx),
+ NULL);
+
+ if (ret != 0) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ret = kdc->config->db[0]->hdb_fetch(kdc->smb_krb5_context->krb5_context,
+ kdc->config->db[0],
+ principal,
+ HDB_F_GET_KRBTGT | HDB_F_DECRYPT,
+ &ent);
+
+ if (ret != 0) {
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ ret = hdb_enctype2key(kdc->smb_krb5_context->krb5_context, &ent.entry, etype, &key);
+
+ if (ret != 0) {
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ keyblock = key->key;
+
+ kdc_sig.type = pac_validate.SignatureType;
+ kdc_sig.signature = data_blob_const(&pac_validate.ChecksumAndSignature.data[pac_validate.ChecksumLength],
+ pac_validate.SignatureLength);
+ ret = check_pac_checksum(msg, srv_sig, &kdc_sig,
+ kdc->smb_krb5_context->krb5_context, &keyblock);
+
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+
+ if (ret != 0) {
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+
/*
startup the kdc task
*/
return;
}
+ status = IRPC_REGISTER(task->msg_ctx, irpc, KDC_CHECK_GENERIC_KERBEROS,
+ kdc_check_generic_kerberos, kdc);
+ if (!NT_STATUS_IS_OK(status)) {
+ task_server_terminate(task, "nbtd failed to setup monitoring");
+ return;
+ }
+
irpc_add_name(task->msg_ctx, "kdc_server");
}
TALLOC_CTX *tmp_ctx = talloc_new(tctx);
+ int i;
+
torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
+ generic.length = pac_wrapped.length;
+ generic.data = pac_wrapped.data;
+
/* Validate it over the netlogon pipe */
generic.identity_info.parameter_control = 0;
generic.identity_info.workstation.string = TEST_MACHINE_NAME;
generic.package_name.string = "Kerberos";
- generic.length = pac_wrapped.length;
- generic.data = pac_wrapped.data;
ZERO_STRUCT(auth2);
creds_client_authenticator(creds, &auth);
torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
+ /* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
+ generic.data[generic.length-1]++;
+
+ ZERO_STRUCT(auth2);
+ creds_client_authenticator(creds, &auth);
+ r.in.credential = &auth;
+ r.in.return_authenticator = &auth2;
+ r.in.logon_level = NetlogonGenericInformation;
+ r.in.logon.generic = &generic;
+ r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
+ r.in.computer_name = cli_credentials_get_workstation(credentials);
+ r.in.validation_level = NetlogonValidationGenericInfo2;
+
+ status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
+
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
+
+ torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
+ "Credential chaining failed");
+
+ /* This will break message type, check that however we still get NT_STATUS_OK */
+ for (i=0; i < 256; i++) {
+ pac_wrapped_struct.MessageType = i;
+ pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
+ pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
+ pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
+ pac_wrapped_struct.ChecksumAndSignature = payload
+ = data_blob_talloc(tmp_ctx, NULL,
+ pac_wrapped_struct.ChecksumLength
+ + pac_wrapped_struct.SignatureLength);
+ memcpy(&payload.data[0],
+ session_info->server_info->pac_srv_sig.signature.data,
+ pac_wrapped_struct.ChecksumLength);
+ memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
+ session_info->server_info->pac_kdc_sig.signature.data,
+ pac_wrapped_struct.SignatureLength);
+
+ ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
+ (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
+ torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
+
+ torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
+ creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
+
+ generic.length = pac_wrapped.length;
+ generic.data = pac_wrapped.data;
+
+ ZERO_STRUCT(auth2);
+ creds_client_authenticator(creds, &auth);
+ r.in.credential = &auth;
+ r.in.return_authenticator = &auth2;
+ r.in.logon_level = NetlogonGenericInformation;
+ r.in.logon.generic = &generic;
+ r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
+ r.in.computer_name = cli_credentials_get_workstation(credentials);
+ r.in.validation_level = NetlogonValidationGenericInfo2;
+
+ status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
+
+ torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
+
+ torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
+ "Credential chaining failed");
+ }
+
+ /* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
+ generic.length--;
+
+ ZERO_STRUCT(auth2);
+ creds_client_authenticator(creds, &auth);
+ r.in.credential = &auth;
+ r.in.return_authenticator = &auth2;
+ r.in.logon_level = NetlogonGenericInformation;
+ r.in.logon.generic = &generic;
+ r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
+ r.in.computer_name = cli_credentials_get_workstation(credentials);
+ r.in.validation_level = NetlogonValidationGenericInfo2;
+
+ status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
+
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
+
+ torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
+ "Credential chaining failed");
+
+ pac_wrapped_struct.MessageType = 0x3;
+ pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
+ pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
+
+ /* Break the SignatureType */
+ pac_wrapped_struct.SignatureType++;
+
+ pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
+ pac_wrapped_struct.ChecksumAndSignature = payload
+ = data_blob_talloc(tmp_ctx, NULL,
+ pac_wrapped_struct.ChecksumLength
+ + pac_wrapped_struct.SignatureLength);
+ memcpy(&payload.data[0],
+ session_info->server_info->pac_srv_sig.signature.data,
+ pac_wrapped_struct.ChecksumLength);
+ memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
+ session_info->server_info->pac_kdc_sig.signature.data,
+ pac_wrapped_struct.SignatureLength);
+
+ ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
+ (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
+ torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
+
+ torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
+ creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
+
+ generic.length = pac_wrapped.length;
+ generic.data = pac_wrapped.data;
+
+ ZERO_STRUCT(auth2);
+ creds_client_authenticator(creds, &auth);
+ r.in.credential = &auth;
+ r.in.return_authenticator = &auth2;
+ r.in.logon_level = NetlogonGenericInformation;
+ r.in.logon.generic = &generic;
+ r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
+ r.in.computer_name = cli_credentials_get_workstation(credentials);
+ r.in.validation_level = NetlogonValidationGenericInfo2;
+
+ status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
+
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
+
torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
+
+ pac_wrapped_struct.MessageType = 0x3;
+ pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
+ pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
+ pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
+
+ pac_wrapped_struct.ChecksumAndSignature = payload
+ = data_blob_talloc(tmp_ctx, NULL,
+ pac_wrapped_struct.ChecksumLength
+ + pac_wrapped_struct.SignatureLength);
+ memcpy(&payload.data[0],
+ session_info->server_info->pac_srv_sig.signature.data,
+ pac_wrapped_struct.ChecksumLength);
+ memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
+ session_info->server_info->pac_kdc_sig.signature.data,
+ pac_wrapped_struct.SignatureLength);
+
+ /* Break the signature length */
+ pac_wrapped_struct.SignatureLength++;
+
+ ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
+ (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
+ torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
+
+ torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
+ creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
+
+ generic.length = pac_wrapped.length;
+ generic.data = pac_wrapped.data;
+
+ ZERO_STRUCT(auth2);
+ creds_client_authenticator(creds, &auth);
+ r.in.credential = &auth;
+ r.in.return_authenticator = &auth2;
+ r.in.logon_level = NetlogonGenericInformation;
+ r.in.logon.generic = &generic;
+ r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
+ r.in.computer_name = cli_credentials_get_workstation(credentials);
+ r.in.validation_level = NetlogonValidationGenericInfo2;
+
+ status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
+
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
+
+ torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
+ "Credential chaining failed");
return true;
}
git.samba.org / metze / samba / wip.git / commitdiff