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-rw-r--r--source3/libsmb/cliconnect.c58
-rw-r--r--source3/param/loadparm.c19
2 files changed, 68 insertions, 9 deletions
diff --git a/source3/libsmb/cliconnect.c b/source3/libsmb/cliconnect.c
index 8ebac7bae7..ffacc3af9a 100644
--- a/source3/libsmb/cliconnect.c
+++ b/source3/libsmb/cliconnect.c
@@ -293,14 +293,18 @@ static BOOL cli_session_setup_nt1(struct cli_state *cli, const char *user,
uchar nt_hash[16];
E_md4hash(pass, nt_hash);
+ nt_response = data_blob(NULL, 24);
+ SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
+
/* non encrypted password supplied. Ignore ntpass. */
if (lp_client_lanman_auth()) {
lm_response = data_blob(NULL, 24);
- SMBencrypt(pass,cli->secblob.data,lm_response.data);
+ SMBencrypt(pass,cli->secblob.data, lm_response.data);
+ } else {
+ /* LM disabled, place NT# in LM feild instead */
+ lm_response = data_blob(nt_response.data, nt_response.length);
}
- nt_response = data_blob(NULL, 24);
- SMBNTencrypt(pass,cli->secblob.data,nt_response.data);
session_key = data_blob(NULL, 16);
SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
}
@@ -575,7 +579,6 @@ static BOOL cli_session_setup_ntlmssp(struct cli_state *cli, const char *user,
}
data_blob_free(&tmp_blob);
} else {
- /* the server might give us back two challenges */
if (!spnego_parse_auth_response(blob, nt_status,
&blob_in)) {
DEBUG(3,("Failed to parse auth response\n"));
@@ -713,8 +716,22 @@ BOOL cli_session_setup(struct cli_state *cli,
/* if its an older server then we have to use the older request format */
- if (cli->protocol < PROTOCOL_NT1)
+ if (cli->protocol < PROTOCOL_NT1) {
+ if (!lp_client_lanman_auth() && passlen != 24 && (*pass)) {
+ DEBUG(1, ("Server requested LM password but 'client lanman auth'"
+ " is disabled\n"));
+ return False;
+ }
+
+ if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0 &&
+ !lp_client_plaintext_auth() && (*pass)) {
+ DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
+ " is disabled\n"));
+ return False;
+ }
+
return cli_session_setup_lanman2(cli, user, pass, passlen, workgroup);
+ }
/* if no user is supplied then we have to do an anonymous connection.
passwords are ignored */
@@ -726,17 +743,21 @@ BOOL cli_session_setup(struct cli_state *cli,
password at this point. The password is sent in the tree
connect */
- if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
+ if ((cli->sec_mode & NEGOTIATE_SECURITY_USER_LEVEL) == 0)
return cli_session_setup_plaintext(cli, user, "", workgroup);
/* if the server doesn't support encryption then we have to use
plaintext. The second password is ignored */
- if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0)
+ if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) == 0) {
+ if (!lp_client_plaintext_auth() && (*pass)) {
+ DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
+ " is disabled\n"));
+ return False;
+ }
return cli_session_setup_plaintext(cli, user, pass, workgroup);
+ }
- /* Indidicate signing */
-
/* if the server supports extended security then use SPNEGO */
if (cli->capabilities & CAP_EXTENDED_SECURITY)
@@ -789,6 +810,12 @@ BOOL cli_send_tconX(struct cli_state *cli,
}
if ((cli->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) && *pass && passlen != 24) {
+ if (!lp_client_lanman_auth()) {
+ DEBUG(1, ("Server requested LANMAN password but 'client use lanman auth'"
+ " is disabled\n"));
+ return False;
+ }
+
/*
* Non-encrypted passwords - convert to DOS codepage before encryption.
*/
@@ -796,10 +823,17 @@ BOOL cli_send_tconX(struct cli_state *cli,
SMBencrypt(pass,cli->secblob.data,(uchar *)pword);
} else {
if((cli->sec_mode & (NEGOTIATE_SECURITY_USER_LEVEL|NEGOTIATE_SECURITY_CHALLENGE_RESPONSE)) == 0) {
+ if (!lp_client_plaintext_auth() && (*pass)) {
+ DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
+ " is disabled\n"));
+ return False;
+ }
+
/*
* Non-encrypted passwords - convert to DOS codepage before using.
*/
passlen = clistr_push(cli, pword, pass, sizeof(pword), STR_TERMINATE);
+
} else {
memcpy(pword, pass, passlen);
}
@@ -1375,6 +1409,12 @@ NTSTATUS cli_raw_tcon(struct cli_state *cli,
{
char *p;
+ if (!lp_client_plaintext_auth() && (*pass)) {
+ DEBUG(1, ("Server requested plaintext password but 'client use plaintext auth'"
+ " is disabled\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
memset(cli->outbuf,'\0',smb_size);
memset(cli->inbuf,'\0',smb_size);
diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c
index 30fc6c5d12..9ca7a58e83 100644
--- a/source3/param/loadparm.c
+++ b/source3/param/loadparm.c
@@ -276,6 +276,7 @@ typedef struct
BOOL bUseSpnego;
BOOL bClientLanManAuth;
BOOL bClientNTLMv2Auth;
+ BOOL bClientPlaintextAuth;
BOOL bClientUseSpnego;
BOOL bDebugHiresTimestamp;
BOOL bDebugPid;
@@ -567,6 +568,7 @@ static BOOL handle_acl_compatibility(const char *pszParmValue, char **ptr);
static void set_server_role(void);
static void set_default_server_announce_type(void);
+static void set_allowed_client_auth(void);
static const struct enum_list enum_protocol[] = {
{PROTOCOL_NT1, "NT1"},
@@ -778,6 +780,7 @@ static struct parm_struct parm_table[] = {
{"ntlm auth", P_BOOL, P_GLOBAL, &Globals.bNTLMAuth, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
{"client NTLMv2 auth", P_BOOL, P_GLOBAL, &Globals.bClientNTLMv2Auth, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
{"client lanman auth", P_BOOL, P_GLOBAL, &Globals.bClientLanManAuth, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
+ {"client plaintext auth", P_BOOL, P_GLOBAL, &Globals.bClientPlaintextAuth, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
{"username", P_STRING, P_LOCAL, &sDefault.szUsername, NULL, NULL, FLAG_GLOBAL | FLAG_SHARE},
{"user", P_STRING, P_LOCAL, &sDefault.szUsername, NULL, NULL, FLAG_HIDE},
@@ -1386,6 +1389,7 @@ static void init_globals(void)
Globals.bStatCache = True; /* use stat cache by default */
Globals.restrict_anonymous = 0;
Globals.bClientLanManAuth = True; /* Do use the LanMan hash if it is available */
+ Globals.bClientPlaintextAuth = True; /* Do use a plaintext password if is requested by the server */
Globals.bLanmanAuth = True; /* Do use the LanMan hash if it is available */
Globals.bNTLMAuth = True; /* Do use NTLMv1 if it is available (otherwise NTLMv2) */
@@ -1695,6 +1699,7 @@ FN_GLOBAL_BOOL(lp_allow_trusted_domains, &Globals.bAllowTrustedDomains)
FN_GLOBAL_INTEGER(lp_restrict_anonymous, &Globals.restrict_anonymous)
FN_GLOBAL_BOOL(lp_lanman_auth, &Globals.bLanmanAuth)
FN_GLOBAL_BOOL(lp_ntlm_auth, &Globals.bNTLMAuth)
+FN_GLOBAL_BOOL(lp_client_plaintext_auth, &Globals.bClientPlaintextAuth)
FN_GLOBAL_BOOL(lp_client_lanman_auth, &Globals.bClientLanManAuth)
FN_GLOBAL_BOOL(lp_client_ntlmv2_auth, &Globals.bClientNTLMv2Auth)
FN_GLOBAL_BOOL(lp_host_msdfs, &Globals.bHostMSDfs)
@@ -3821,6 +3826,19 @@ static void set_server_role(void)
}
}
+/***********************************************************
+ If we should send plaintext/LANMAN passwords in the clinet
+************************************************************/
+static void set_allowed_client_auth(void)
+{
+ if (Globals.bClientNTLMv2Auth) {
+ Globals.bClientLanManAuth = False;
+ }
+ if (!Globals.bClientLanManAuth) {
+ Globals.bClientPlaintextAuth = False;
+ }
+}
+
/***************************************************************************
Load the services array from the services file. Return True on success,
False on failure.
@@ -3888,6 +3906,7 @@ BOOL lp_load(const char *pszFname, BOOL global_only, BOOL save_defaults,
set_server_role();
set_default_server_announce_type();
+ set_allowed_client_auth();
bLoaded = True;
generated by cgit (git 2.34.1) at 2024-07-18 00:11:03 +0000