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Unix SMB/CIFS implementation.
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Winbind status program.
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Copyright (C) Tim Potter 2000-2003
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Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
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Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include "utils/ntlm_auth.h"
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#define DBGC_CLASS DBGC_WINBIND
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Authenticate a user with a challenge/response, checking session key
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and valid authentication types
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* Test the normal 'LM and NTLM' combination
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static BOOL test_lm_ntlm_broken(enum ntlm_break break_which)
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DATA_BLOB lm_response = data_blob(NULL, 24);
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DATA_BLOB nt_response = data_blob(NULL, 24);
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DATA_BLOB session_key = data_blob(NULL, 16);
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uchar user_session_key[16];
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DATA_BLOB chall = get_challenge();
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ZERO_STRUCT(user_session_key);
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flags |= WBFLAG_PAM_LMKEY;
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flags |= WBFLAG_PAM_USER_SESSION_KEY;
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SMBencrypt(opt_password,chall.data,lm_response.data);
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E_deshash(opt_password, lm_hash);
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SMBNTencrypt(opt_password,chall.data,nt_response.data);
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E_md4hash(opt_password, nt_hash);
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SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
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switch (break_which) {
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lm_response.data[0]++;
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nt_response.data[0]++;
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data_blob_free(&lm_response);
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data_blob_free(&nt_response);
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nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
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&error_string, NULL);
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data_blob_free(&lm_response);
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if (!NT_STATUS_IS_OK(nt_status)) {
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d_printf("%s (0x%x)\n",
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NT_STATUS_V(nt_status));
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SAFE_FREE(error_string);
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return break_which == BREAK_NT;
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if (memcmp(lm_hash, lm_key,
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sizeof(lm_key)) != 0) {
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DEBUG(1, ("LM Key does not match expectations!\n"));
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DEBUG(1, ("lm_key:\n"));
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dump_data(1, (const char *)lm_key, 8);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)lm_hash, 8);
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if (break_which == NO_NT) {
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if (memcmp(lm_hash, user_session_key,
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DEBUG(1, ("NT Session Key does not match expectations (should be LM hash)!\n"));
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DEBUG(1, ("user_session_key:\n"));
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dump_data(1, (const char *)user_session_key, sizeof(user_session_key));
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)lm_hash, sizeof(lm_hash));
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if (memcmp(session_key.data, user_session_key,
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sizeof(user_session_key)) != 0) {
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DEBUG(1, ("NT Session Key does not match expectations!\n"));
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DEBUG(1, ("user_session_key:\n"));
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dump_data(1, (const char *)user_session_key, 16);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)session_key.data, session_key.length);
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* Test LM authentication, no NT response supplied
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static BOOL test_lm(void)
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return test_lm_ntlm_broken(NO_NT);
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* Test the NTLM response only, no LM.
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static BOOL test_ntlm(void)
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return test_lm_ntlm_broken(NO_LM);
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* Test the NTLM response only, but in the LM field.
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static BOOL test_ntlm_in_lm(void)
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DATA_BLOB nt_response = data_blob(NULL, 24);
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uchar user_session_key[16];
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DATA_BLOB chall = get_challenge();
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ZERO_STRUCT(user_session_key);
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flags |= WBFLAG_PAM_LMKEY;
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flags |= WBFLAG_PAM_USER_SESSION_KEY;
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SMBNTencrypt(opt_password,chall.data,nt_response.data);
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E_deshash(opt_password, lm_hash);
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nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
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&error_string, NULL);
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data_blob_free(&nt_response);
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if (!NT_STATUS_IS_OK(nt_status)) {
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d_printf("%s (0x%x)\n",
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NT_STATUS_V(nt_status));
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SAFE_FREE(error_string);
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if (memcmp(lm_hash, lm_key,
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sizeof(lm_key)) != 0) {
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DEBUG(1, ("LM Key does not match expectations!\n"));
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DEBUG(1, ("lm_key:\n"));
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dump_data(1, (const char *)lm_key, 8);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)lm_hash, 8);
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if (memcmp(lm_hash, user_session_key, 8) != 0) {
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DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n"));
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DEBUG(1, ("user_session_key:\n"));
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dump_data(1, (const char *)user_session_key, 16);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)lm_hash, 8);
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* Test the NTLM response only, but in the both the NT and LM fields.
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static BOOL test_ntlm_in_both(void)
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DATA_BLOB nt_response = data_blob(NULL, 24);
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DATA_BLOB session_key = data_blob(NULL, 16);
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char user_session_key[16];
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DATA_BLOB chall = get_challenge();
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ZERO_STRUCT(user_session_key);
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flags |= WBFLAG_PAM_LMKEY;
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flags |= WBFLAG_PAM_USER_SESSION_KEY;
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SMBNTencrypt(opt_password,chall.data,nt_response.data);
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E_md4hash(opt_password, (unsigned char *)nt_hash);
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SMBsesskeygen_ntv1((const unsigned char *)nt_hash, NULL, session_key.data);
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E_deshash(opt_password, (unsigned char *)lm_hash);
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nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
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(unsigned char *)lm_key,
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(unsigned char *)user_session_key,
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&error_string, NULL);
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data_blob_free(&nt_response);
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if (!NT_STATUS_IS_OK(nt_status)) {
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d_printf("%s (0x%x)\n",
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NT_STATUS_V(nt_status));
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SAFE_FREE(error_string);
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if (memcmp(lm_hash, lm_key,
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sizeof(lm_key)) != 0) {
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DEBUG(1, ("LM Key does not match expectations!\n"));
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DEBUG(1, ("lm_key:\n"));
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dump_data(1, lm_key, 8);
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DEBUG(1, ("expected:\n"));
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dump_data(1, lm_hash, 8);
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if (memcmp(session_key.data, user_session_key,
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sizeof(user_session_key)) != 0) {
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DEBUG(1, ("NT Session Key does not match expectations!\n"));
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DEBUG(1, ("user_session_key:\n"));
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dump_data(1, user_session_key, 16);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)session_key.data, session_key.length);
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* Test the NTLMv2 and LMv2 responses
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static BOOL test_lmv2_ntlmv2_broken(enum ntlm_break break_which)
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DATA_BLOB ntlmv2_response = data_blob(NULL, 0);
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DATA_BLOB lmv2_response = data_blob(NULL, 0);
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DATA_BLOB ntlmv2_session_key = data_blob(NULL, 0);
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DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
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uchar user_session_key[16];
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DATA_BLOB chall = get_challenge();
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ZERO_STRUCT(user_session_key);
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flags |= WBFLAG_PAM_USER_SESSION_KEY;
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if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
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&lmv2_response, &ntlmv2_response,
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&ntlmv2_session_key)) {
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data_blob_free(&names_blob);
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data_blob_free(&names_blob);
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switch (break_which) {
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lmv2_response.data[0]++;
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ntlmv2_response.data[0]++;
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data_blob_free(&lmv2_response);
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data_blob_free(&ntlmv2_response);
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nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
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&error_string, NULL);
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data_blob_free(&lmv2_response);
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data_blob_free(&ntlmv2_response);
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if (!NT_STATUS_IS_OK(nt_status)) {
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d_printf("%s (0x%x)\n",
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NT_STATUS_V(nt_status));
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SAFE_FREE(error_string);
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return break_which == BREAK_NT;
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if (break_which != NO_NT && break_which != BREAK_NT && memcmp(ntlmv2_session_key.data, user_session_key,
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sizeof(user_session_key)) != 0) {
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DEBUG(1, ("USER (NTLMv2) Session Key does not match expectations!\n"));
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DEBUG(1, ("user_session_key:\n"));
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dump_data(1, (const char *)user_session_key, 16);
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DEBUG(1, ("expected:\n"));
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dump_data(1, (const char *)ntlmv2_session_key.data, ntlmv2_session_key.length);
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* Test the NTLMv2 and LMv2 responses
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static BOOL test_lmv2_ntlmv2(void)
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return test_lmv2_ntlmv2_broken(BREAK_NONE);
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* Test the LMv2 response only
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static BOOL test_lmv2(void)
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return test_lmv2_ntlmv2_broken(NO_NT);
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* Test the NTLMv2 response only
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static BOOL test_ntlmv2(void)
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return test_lmv2_ntlmv2_broken(NO_LM);
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static BOOL test_lm_ntlm(void)
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return test_lm_ntlm_broken(BREAK_NONE);
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static BOOL test_ntlm_lm_broken(void)
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return test_lm_ntlm_broken(BREAK_LM);
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static BOOL test_ntlm_ntlm_broken(void)
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return test_lm_ntlm_broken(BREAK_NT);
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static BOOL test_ntlmv2_lmv2_broken(void)
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return test_lmv2_ntlmv2_broken(BREAK_LM);
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static BOOL test_ntlmv2_ntlmv2_broken(void)
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return test_lmv2_ntlmv2_broken(BREAK_NT);
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static BOOL test_plaintext(enum ntlm_break break_which)
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DATA_BLOB nt_response = data_blob(NULL, 0);
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DATA_BLOB lm_response = data_blob(NULL, 0);
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smb_ucs2_t *nt_response_ucs2;
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uchar user_session_key[16];
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static const uchar zeros[8];
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DATA_BLOB chall = data_blob(zeros, sizeof(zeros));
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ZERO_STRUCT(user_session_key);
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flags |= WBFLAG_PAM_LMKEY;
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flags |= WBFLAG_PAM_USER_SESSION_KEY;
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if ((push_ucs2_allocate(&nt_response_ucs2, opt_password)) == -1) {
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DEBUG(0, ("push_ucs2_allocate failed!\n"));
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nt_response.data = (unsigned char *)nt_response_ucs2;
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nt_response.length = strlen_w(nt_response_ucs2)*sizeof(smb_ucs2_t);
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if ((password = strdup_upper(opt_password)) == NULL) {
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DEBUG(0, ("strdup_upper failed!\n"));
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if ((convert_string_allocate(NULL, CH_UNIX,
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&lm_response.data,True)) == -1) {
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DEBUG(0, ("convert_string_allocate failed!\n"));
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lm_response.length = strlen((const char *)lm_response.data);
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switch (break_which) {
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lm_response.data[0]++;
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nt_response.data[0]++;
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SAFE_FREE(lm_response.data);
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lm_response.length = 0;
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SAFE_FREE(nt_response.data);
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nt_response.length = 0;
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nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
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&error_string, NULL);
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SAFE_FREE(nt_response.data);
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SAFE_FREE(lm_response.data);
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data_blob_free(&chall);
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if (!NT_STATUS_IS_OK(nt_status)) {
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d_printf("%s (0x%x)\n",
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NT_STATUS_V(nt_status));
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SAFE_FREE(error_string);
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return break_which == BREAK_NT;
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return break_which != BREAK_NT;
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static BOOL test_plaintext_none_broken(void) {
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return test_plaintext(BREAK_NONE);
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static BOOL test_plaintext_lm_broken(void) {
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return test_plaintext(BREAK_LM);
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static BOOL test_plaintext_nt_broken(void) {
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return test_plaintext(BREAK_NT);
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static BOOL test_plaintext_nt_only(void) {
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return test_plaintext(NO_LM);
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static BOOL test_plaintext_lm_only(void) {
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return test_plaintext(NO_NT);
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- plaintext tests (in challenge-response feilds)
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check we get the correct session key in each case
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check what values we get for the LM session key
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static const struct ntlm_tests {
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{test_lm_ntlm, "LM and NTLM"},
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{test_ntlm_in_lm, "NTLM in LM"},
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{test_ntlm_in_both, "NTLM in both"},
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{test_ntlmv2, "NTLMv2"},
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{test_lmv2_ntlmv2, "NTLMv2 and LMv2"},
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{test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken"},
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{test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken"},
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{test_ntlm_lm_broken, "NTLM and LM, LM broken"},
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{test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken"},
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{test_plaintext_none_broken, "Plaintext"},
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{test_plaintext_lm_broken, "Plaintext LM broken"},
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{test_plaintext_nt_broken, "Plaintext NT broken"},
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{test_plaintext_nt_only, "Plaintext NT only"},
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{test_plaintext_lm_only, "Plaintext LM only"},
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BOOL diagnose_ntlm_auth(void)
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for (i=0; test_table[i].fn; i++) {
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if (!test_table[i].fn()) {
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DEBUG(1, ("Test %s failed!\n", test_table[i].name));
added
removed
source/utils/ntlm_auth_diagnostics.c
