diff options
Diffstat (limited to 'source3/libsmb/ntlmssp.c')
| -rw-r--r-- | source3/libsmb/ntlmssp.c | 59 |
1 files changed, 42 insertions, 17 deletions
diff --git a/source3/libsmb/ntlmssp.c b/source3/libsmb/ntlmssp.c index 7b821da0fd..40d7f41109 100644 --- a/source3/libsmb/ntlmssp.c +++ b/source3/libsmb/ntlmssp.c @@ -338,6 +338,10 @@ static void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state, ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY; } + if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN) { + ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN; + } + if (!(neg_flags & NTLMSSP_NEGOTIATE_NTLM2)) { ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2; } @@ -577,6 +581,9 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, } } + if (auth_flags) + ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, lp_lanman_auth()); + if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) { SAFE_FREE(domain); SAFE_FREE(user); @@ -654,7 +661,8 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, /* Finally, actually ask if the password is OK */ - if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state, &nt_session_key, &lm_session_key))) { + if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state, + &nt_session_key, &lm_session_key))) { data_blob_free(&encrypted_session_key); return nt_status; } @@ -670,24 +678,28 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, sizeof(session_nonce), session_key.data); DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n")); dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length); - - }else { - data_blob_free(&encrypted_session_key); + + } else { DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n")); - return NT_STATUS_INVALID_PARAMETER; + session_key = data_blob(NULL, 0); } } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) { - if (lm_session_key.data && lm_session_key.length >= 8 && - ntlmssp_state->lm_resp.data && ntlmssp_state->lm_resp.length == 24) { - session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16); - SMBsesskeygen_lm_sess_key(lm_session_key.data, ntlmssp_state->lm_resp.data, - session_key.data); - DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n")); - dump_data_pw("LM session key:\n", session_key.data, session_key.length); + if (lm_session_key.data && lm_session_key.length >= 8) { + if (ntlmssp_state->lm_resp.data && ntlmssp_state->lm_resp.length == 24) { + session_key = data_blob_talloc(ntlmssp_state->mem_ctx, NULL, 16); + SMBsesskeygen_lm_sess_key(lm_session_key.data, ntlmssp_state->lm_resp.data, + session_key.data); + DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n")); + dump_data_pw("LM session key:\n", session_key.data, session_key.length); + } else { + /* use the key unmodified - it's + * probably a NULL key from the guest + * login */ + session_key = lm_session_key; + } } else { - data_blob_free(&encrypted_session_key); DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n")); - return NT_STATUS_INVALID_PARAMETER; + session_key = data_blob(NULL, 0); } } else if (nt_session_key.data) { session_key = nt_session_key; @@ -698,9 +710,8 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, DEBUG(10,("ntlmssp_server_auth: Using unmodified lm session key.\n")); dump_data_pw("unmodified session key:\n", session_key.data, session_key.length); } else { - data_blob_free(&encrypted_session_key); DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n")); - return NT_STATUS_INVALID_PARAMETER; + session_key = data_blob(NULL, 0); } /* With KEY_EXCH, the client supplies the proposed session key, @@ -714,6 +725,7 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, } else if (!session_key.data || session_key.length != 16) { DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n", session_key.length)); + ntlmssp_state->session_key = session_key; } else { dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length); SamOEMhash(encrypted_session_key.data, @@ -723,12 +735,18 @@ static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state, encrypted_session_key.data, encrypted_session_key.length); dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, - encrypted_session_key.length); + encrypted_session_key.length); } } else { ntlmssp_state->session_key = session_key; } + if (!NT_STATUS_IS_OK(nt_status)) { + ntlmssp_state->session_key = data_blob(NULL, 0); + } else if (ntlmssp_state->session_key.length) { + nt_status = ntlmssp_sign_init(ntlmssp_state); + } + data_blob_free(&encrypted_session_key); /* allow arbitarily many authentications */ @@ -906,7 +924,14 @@ static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state, } if (!ntlmssp_state->password) { + static const uchar zeros[16]; /* do nothing - blobs are zero length */ + + /* session key is all zeros */ + session_key = data_blob_talloc(ntlmssp_state->mem_ctx, zeros, 16); + + /* not doing NLTM2 without a password */ + ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2; } else if (ntlmssp_state->use_ntlmv2) { if (!struct_blob.length) { |