summaryrefslogtreecommitdiff
path: root/source3/smbd/sesssetup.c
diff options
context:
space:
mode:
Diffstat (limited to 'source3/smbd/sesssetup.c')
-rw-r--r--source3/smbd/sesssetup.c120
1 files changed, 86 insertions, 34 deletions
diff --git a/source3/smbd/sesssetup.c b/source3/smbd/sesssetup.c
index 1e4e208951..9baa02977a 100644
--- a/source3/smbd/sesssetup.c
+++ b/source3/smbd/sesssetup.c
@@ -259,7 +259,7 @@ static void reply_spnego_kerberos(struct smb_request *req,
fstring user;
int sess_vuid = req->vuid;
NTSTATUS ret = NT_STATUS_OK;
- PAC_DATA *pac_data = NULL;
+ struct PAC_DATA *pac_data = NULL;
DATA_BLOB ap_rep, ap_rep_wrapped, response;
auth_serversupplied_info *server_info = NULL;
DATA_BLOB session_key = data_blob_null;
@@ -268,7 +268,7 @@ static void reply_spnego_kerberos(struct smb_request *req,
fstring real_username;
bool map_domainuser_to_guest = False;
bool username_was_mapped;
- PAC_LOGON_INFO *logon_info = NULL;
+ struct PAC_LOGON_INFO *logon_info = NULL;
ZERO_STRUCT(ticket);
ZERO_STRUCT(ap_rep);
@@ -394,10 +394,9 @@ static void reply_spnego_kerberos(struct smb_request *req,
domain = p+1;
- if (logon_info && logon_info->info3.hdr_logon_dom.uni_str_len) {
- unistr2_to_ascii(netbios_domain_name,
- &logon_info->info3.uni_logon_dom,
- sizeof(netbios_domain_name));
+ if (logon_info && logon_info->info3.base.domain.string) {
+ fstrcpy(netbios_domain_name,
+ logon_info->info3.base.domain.string);
domain = netbios_domain_name;
DEBUG(10, ("Mapped to [%s] (using PAC)\n", domain));
@@ -620,6 +619,7 @@ static void reply_spnego_ntlmssp(struct smb_request *req,
uint16 vuid,
AUTH_NTLMSSP_STATE **auth_ntlmssp_state,
DATA_BLOB *ntlmssp_blob, NTSTATUS nt_status,
+ const char *OID,
bool wrap)
{
DATA_BLOB response;
@@ -680,7 +680,7 @@ static void reply_spnego_ntlmssp(struct smb_request *req,
if (wrap) {
response = spnego_gen_auth_response(ntlmssp_blob,
- nt_status, OID_NTLMSSP);
+ nt_status, OID);
} else {
response = *ntlmssp_blob;
}
@@ -745,6 +745,28 @@ NTSTATUS parse_spnego_mechanisms(DATA_BLOB blob_in, DATA_BLOB *pblob_out,
}
/****************************************************************************
+ Fall back from krb5 to NTLMSSP.
+****************************************************************************/
+
+static void reply_spnego_downgrade_to_ntlmssp(struct smb_request *req,
+ uint16 vuid)
+{
+ DATA_BLOB response;
+
+ reply_outbuf(req, 4, 0);
+ SSVAL(req->outbuf,smb_uid,vuid);
+
+ DEBUG(3,("reply_spnego_downgrade_to_ntlmssp: Got krb5 ticket in SPNEGO "
+ "but set to downgrade to NTLMSSP\n"));
+
+ response = spnego_gen_auth_response(NULL,
+ NT_STATUS_MORE_PROCESSING_REQUIRED,
+ OID_NTLMSSP);
+ reply_sesssetup_blob(req, response, NT_STATUS_MORE_PROCESSING_REQUIRED);
+ data_blob_free(&response);
+}
+
+/****************************************************************************
Reply to a session setup spnego negotiate packet.
****************************************************************************/
@@ -789,6 +811,15 @@ static void reply_spnego_negotiate(struct smb_request *req,
auth_ntlmssp_end(auth_ntlmssp_state);
}
+ if (got_kerberos_mechanism) {
+ data_blob_free(&secblob);
+ /* The mechtoken is a krb5 ticket, but
+ * we need to fall back to NTLM. */
+ reply_spnego_downgrade_to_ntlmssp(req,
+ vuid);
+ return;
+ }
+
status = auth_ntlmssp_start(auth_ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
/* Kill the intermediate vuid */
@@ -803,7 +834,7 @@ static void reply_spnego_negotiate(struct smb_request *req,
data_blob_free(&secblob);
reply_spnego_ntlmssp(req, vuid, auth_ntlmssp_state,
- &chal, status, True);
+ &chal, status, OID_NTLMSSP, true);
data_blob_free(&chal);
@@ -823,7 +854,7 @@ static void reply_spnego_auth(struct smb_request *req,
DATA_BLOB auth = data_blob_null;
DATA_BLOB auth_reply = data_blob_null;
DATA_BLOB secblob = data_blob_null;
- NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
+ NTSTATUS status = NT_STATUS_LOGON_FAILURE;
if (!spnego_parse_auth(blob1, &auth)) {
#if 0
@@ -833,7 +864,7 @@ static void reply_spnego_auth(struct smb_request *req,
invalidate_vuid(vuid);
reply_nterror(req, nt_status_squash(
- NT_STATUS_INVALID_PARAMETER));
+ NT_STATUS_LOGON_FAILURE));
return;
}
@@ -843,24 +874,43 @@ static void reply_spnego_auth(struct smb_request *req,
bool got_krb5_mechanism = False;
status = parse_spnego_mechanisms(auth, &secblob,
&got_krb5_mechanism);
- if (NT_STATUS_IS_OK(status)) {
- DEBUG(3,("reply_spnego_auth: Got secblob of size %lu\n",
- (unsigned long)secblob.length));
+
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
+
+ DEBUG(3,("reply_spnego_auth: Got secblob of size %lu\n",
+ (unsigned long)secblob.length));
#ifdef HAVE_KRB5
- if ( got_krb5_mechanism && ((lp_security()==SEC_ADS) ||
- lp_use_kerberos_keytab()) ) {
- bool destroy_vuid = True;
- reply_spnego_kerberos(req, &secblob,
- vuid, &destroy_vuid);
- data_blob_free(&secblob);
- data_blob_free(&auth);
- if (destroy_vuid) {
- /* Kill the intermediate vuid */
- invalidate_vuid(vuid);
- }
- return;
+ if ( got_krb5_mechanism && ((lp_security()==SEC_ADS) ||
+ lp_use_kerberos_keytab()) ) {
+ bool destroy_vuid = True;
+ reply_spnego_kerberos(req, &secblob,
+ vuid, &destroy_vuid);
+ data_blob_free(&secblob);
+ data_blob_free(&auth);
+ if (destroy_vuid) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
}
+ return;
+ }
#endif
+ /* Can't blunder into NTLMSSP auth if we have
+ * a krb5 ticket. */
+
+ if (got_krb5_mechanism) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ DEBUG(3,("reply_spnego_auth: network "
+ "misconfiguration, client sent us a "
+ "krb5 ticket and kerberos security "
+ "not enabled"));
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
}
}
@@ -868,13 +918,13 @@ static void reply_spnego_auth(struct smb_request *req,
data_blob_free(&secblob);
if (!*auth_ntlmssp_state) {
- /* Kill the intermediate vuid */
- invalidate_vuid(vuid);
-
- /* auth before negotiatiate? */
- reply_nterror(req, nt_status_squash(
- NT_STATUS_INVALID_PARAMETER));
- return;
+ status = auth_ntlmssp_start(auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
}
status = auth_ntlmssp_update(*auth_ntlmssp_state,
@@ -882,9 +932,11 @@ static void reply_spnego_auth(struct smb_request *req,
data_blob_free(&auth);
+ /* Don't send the mechid as we've already sent this (RFC4178). */
+
reply_spnego_ntlmssp(req, vuid,
auth_ntlmssp_state,
- &auth_reply, status, True);
+ &auth_reply, status, NULL, true);
data_blob_free(&auth_reply);
@@ -1251,7 +1303,7 @@ static void reply_sesssetup_and_X_spnego(struct smb_request *req)
reply_spnego_ntlmssp(req, vuid,
&vuser->auth_ntlmssp_state,
- &chal, status, False);
+ &chal, status, OID_NTLMSSP, false);
data_blob_free(&chal);
return;
}
generated by cgit (git 2.34.1) at 2024-11-10 04:53:23 +0000