mirror of
https://github.com/samba-team/samba.git
synced 2024-12-22 13:34:15 +03:00
c0fc6a6d7f
We now include a MsvAvTimestamp in our target info as indication for the client to include a NTLMSSP_MIC in the AUTH_MESSAGE. If the client uses NTLMv2 we check NTLMSSP_AVFLAG_MIC_IN_AUTHENTICATE_MESSAGE and require a valid MIC. This is still disabled if the "map to guest" feature is used. BUG: https://bugzilla.samba.org/show_bug.cgi?id=11644 Signed-off-by: Stefan Metzmacher <metze@samba.org> Reviewed-by: Günther Deschner <gd@samba.org>
247 lines
6.7 KiB
C
247 lines
6.7 KiB
C
/*
|
|
* Unix SMB/CIFS implementation.
|
|
* Version 3.0
|
|
* NTLMSSP Signing routines
|
|
* Copyright (C) Luke Kenneth Casson Leighton 1996-2001
|
|
* Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2005
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "auth/ntlmssp/ntlmssp.h"
|
|
#include "auth/gensec/gensec.h"
|
|
#include "auth/gensec/gensec_internal.h"
|
|
#include "auth/ntlmssp/ntlmssp_private.h"
|
|
|
|
NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
|
|
const DATA_BLOB *first_packet)
|
|
{
|
|
if (ntlmssp_blob_matches_magic(first_packet)) {
|
|
return NT_STATUS_OK;
|
|
} else {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the NTLMSSP master session key
|
|
*
|
|
* @param ntlmssp_state NTLMSSP State
|
|
*/
|
|
|
|
NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *mem_ctx,
|
|
DATA_BLOB *session_key)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
|
|
|
|
if (ntlmssp_state->expected_state != NTLMSSP_DONE) {
|
|
return NT_STATUS_NO_USER_SESSION_KEY;
|
|
}
|
|
|
|
if (!ntlmssp_state->session_key.data) {
|
|
return NT_STATUS_NO_USER_SESSION_KEY;
|
|
}
|
|
*session_key = data_blob_talloc(mem_ctx, ntlmssp_state->session_key.data, ntlmssp_state->session_key.length);
|
|
if (!session_key->data) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
|
|
uint32_t feature)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
|
|
|
|
if (feature & GENSEC_FEATURE_SIGN) {
|
|
if (!ntlmssp_state->session_key.length) {
|
|
return false;
|
|
}
|
|
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
|
|
return true;
|
|
}
|
|
}
|
|
if (feature & GENSEC_FEATURE_SEAL) {
|
|
if (!ntlmssp_state->session_key.length) {
|
|
return false;
|
|
}
|
|
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
|
|
return true;
|
|
}
|
|
}
|
|
if (feature & GENSEC_FEATURE_SESSION_KEY) {
|
|
if (ntlmssp_state->session_key.length) {
|
|
return true;
|
|
}
|
|
}
|
|
if (feature & GENSEC_FEATURE_DCE_STYLE) {
|
|
return true;
|
|
}
|
|
if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
|
|
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
|
|
return true;
|
|
}
|
|
}
|
|
if (feature & GENSEC_FEATURE_SIGN_PKT_HEADER) {
|
|
return true;
|
|
}
|
|
if (feature & GENSEC_FEATURE_NEW_SPNEGO) {
|
|
if (!ntlmssp_state->session_key.length) {
|
|
return false;
|
|
}
|
|
if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
|
|
return false;
|
|
}
|
|
return ntlmssp_state->new_spnego;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp;
|
|
|
|
gensec_ntlmssp = talloc_zero(gensec_security,
|
|
struct gensec_ntlmssp_context);
|
|
if (!gensec_ntlmssp) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
gensec_security->private_data = gensec_ntlmssp;
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *sig_mem_ctx,
|
|
const uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
DATA_BLOB *sig)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
NTSTATUS nt_status;
|
|
|
|
nt_status = ntlmssp_sign_packet(gensec_ntlmssp->ntlmssp_state,
|
|
sig_mem_ctx,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
|
|
return nt_status;
|
|
}
|
|
|
|
NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
|
|
const uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
const DATA_BLOB *sig)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
NTSTATUS nt_status;
|
|
|
|
nt_status = ntlmssp_check_packet(gensec_ntlmssp->ntlmssp_state,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
|
|
return nt_status;
|
|
}
|
|
|
|
NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *sig_mem_ctx,
|
|
uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
DATA_BLOB *sig)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
NTSTATUS nt_status;
|
|
|
|
nt_status = ntlmssp_seal_packet(gensec_ntlmssp->ntlmssp_state,
|
|
sig_mem_ctx,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
|
|
return nt_status;
|
|
}
|
|
|
|
/*
|
|
wrappers for the ntlmssp_*() functions
|
|
*/
|
|
NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
|
|
uint8_t *data, size_t length,
|
|
const uint8_t *whole_pdu, size_t pdu_length,
|
|
const DATA_BLOB *sig)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
NTSTATUS nt_status;
|
|
|
|
nt_status = ntlmssp_unseal_packet(gensec_ntlmssp->ntlmssp_state,
|
|
data, length,
|
|
whole_pdu, pdu_length,
|
|
sig);
|
|
|
|
return nt_status;
|
|
}
|
|
|
|
size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size)
|
|
{
|
|
return NTLMSSP_SIG_SIZE;
|
|
}
|
|
|
|
NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *out_mem_ctx,
|
|
const DATA_BLOB *in,
|
|
DATA_BLOB *out)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
|
|
return ntlmssp_wrap(gensec_ntlmssp->ntlmssp_state,
|
|
out_mem_ctx,
|
|
in, out);
|
|
}
|
|
|
|
|
|
NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
|
|
TALLOC_CTX *out_mem_ctx,
|
|
const DATA_BLOB *in,
|
|
DATA_BLOB *out)
|
|
{
|
|
struct gensec_ntlmssp_context *gensec_ntlmssp =
|
|
talloc_get_type_abort(gensec_security->private_data,
|
|
struct gensec_ntlmssp_context);
|
|
|
|
return ntlmssp_unwrap(gensec_ntlmssp->ntlmssp_state,
|
|
out_mem_ctx,
|
|
in, out);
|
|
}
|