From a3e3d05f35d6082ea48450060b39084e3d0e4056 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Mon, 10 Oct 2022 15:15:20 +0200
Subject: [PATCH 1/5] s3:librpc: Improve GSE error message
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15206
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
---
source3/librpc/crypto/gse.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/source3/librpc/crypto/gse.c b/source3/librpc/crypto/gse.c
index c50a8a036df..c2cac7abf82 100644
--- a/source3/librpc/crypto/gse.c
+++ b/source3/librpc/crypto/gse.c
@@ -546,11 +546,28 @@ init_sec_context_done:
goto done;
case GSS_S_FAILURE:
switch (gss_min) {
- case (OM_uint32)KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
- DBG_NOTICE("Server principal not found\n");
+ case (OM_uint32)KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN: {
+ gss_buffer_desc name_token = {
+ .length = 0,
+ };
+
+ gss_maj = gss_display_name(&gss_min,
+ gse_ctx->server_name,
+ &name_token,
+ NULL);
+ if (gss_maj == GSS_S_COMPLETE) {
+ DBG_NOTICE("Server principal %.*s not found\n",
+ (int)name_token.length,
+ (char *)name_token.value);
+ gss_release_buffer(&gss_maj, &name_token);
+ } else {
+ DBG_NOTICE("Server principal not found\n");
+ }
+
/* Make SPNEGO ignore us, we can't go any further here */
status = NT_STATUS_INVALID_PARAMETER;
goto done;
+ }
case (OM_uint32)KRB5KRB_AP_ERR_TKT_EXPIRED:
DBG_NOTICE("Ticket expired\n");
/* Make SPNEGO ignore us, we can't go any further here */
--
2.37.3
From d2e2e9acd717e45806f1b19378e09f39c8fe3da8 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Fri, 7 Oct 2022 14:35:15 +0200
Subject: [PATCH 2/5] s3:rpcclient: Pass salt down to
init_samr_CryptPasswordAES()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15206
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
---
source3/rpc_client/init_samr.c | 15 ++++-----------
source3/rpc_client/init_samr.h | 1 +
source3/rpcclient/cmd_samr.c | 8 ++++++++
source4/libnet/libnet_passwd.c | 13 +++++++------
source4/torture/rpc/samr.c | 27 +++++++++++++++++++++++++++
5 files changed, 47 insertions(+), 17 deletions(-)
diff --git a/source3/rpc_client/init_samr.c b/source3/rpc_client/init_samr.c
index 68f42b602b3..52fa2f90d6e 100644
--- a/source3/rpc_client/init_samr.c
+++ b/source3/rpc_client/init_samr.c
@@ -79,6 +79,7 @@ NTSTATUS init_samr_CryptPassword(const char *pwd,
NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
const char *password,
+ DATA_BLOB *salt,
DATA_BLOB *session_key,
struct samr_EncryptedPasswordAES *ppwd_buf)
{
@@ -87,12 +88,6 @@ NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
.data = pw_data,
.length = sizeof(pw_data),
};
- size_t iv_size = gnutls_cipher_get_iv_size(GNUTLS_CIPHER_AES_256_CBC);
- uint8_t iv_data[iv_size];
- DATA_BLOB iv = {
- .data = iv_data,
- .length = iv_size,
- };
DATA_BLOB ciphertext = data_blob_null;
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
bool ok;
@@ -101,8 +96,6 @@ NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
return NT_STATUS_INVALID_PARAMETER;
}
- generate_nonce_buffer(iv.data, iv.length);
-
ok = encode_pwd_buffer514_from_str(pw_data, password, STR_UNICODE);
if (!ok) {
return NT_STATUS_INTERNAL_ERROR;
@@ -114,7 +107,7 @@ NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
session_key,
&samr_aes256_enc_key_salt,
&samr_aes256_mac_key_salt,
- &iv,
+ salt,
&ciphertext,
ppwd_buf->auth_data);
BURN_DATA(pw_data);
@@ -126,8 +119,8 @@ NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
ppwd_buf->cipher = ciphertext.data;
ppwd_buf->PBKDF2Iterations = 0;
- SMB_ASSERT(iv.length == sizeof(ppwd_buf->salt));
- memcpy(ppwd_buf->salt, iv.data, iv.length);
+ SMB_ASSERT(salt->length == sizeof(ppwd_buf->salt));
+ memcpy(ppwd_buf->salt, salt->data, salt->length);
return NT_STATUS_OK;
}
diff --git a/source3/rpc_client/init_samr.h b/source3/rpc_client/init_samr.h
index 940534e7168..71b4c0e573d 100644
--- a/source3/rpc_client/init_samr.h
+++ b/source3/rpc_client/init_samr.h
@@ -47,6 +47,7 @@ NTSTATUS init_samr_CryptPassword(const char *pwd,
*/
NTSTATUS init_samr_CryptPasswordAES(TALLOC_CTX *mem_ctx,
const char *password,
+ DATA_BLOB *salt,
DATA_BLOB *session_key,
struct samr_EncryptedPasswordAES *ppwd_buf);
diff --git a/source3/rpcclient/cmd_samr.c b/source3/rpcclient/cmd_samr.c
index 9ccd2f78a8d..8106ca90cf2 100644
--- a/source3/rpcclient/cmd_samr.c
+++ b/source3/rpcclient/cmd_samr.c
@@ -3172,6 +3172,11 @@ static NTSTATUS cmd_samr_setuserinfo_int(struct rpc_pipe_client *cli,
uint8_t nt_hash[16];
uint8_t lm_hash[16];
DATA_BLOB session_key;
+ uint8_t salt_data[16];
+ DATA_BLOB salt = {
+ .data = salt_data,
+ .length = sizeof(salt_data),
+ };
uint8_t password_expired = 0;
struct dcerpc_binding_handle *b = cli->binding_handle;
TALLOC_CTX *frame = NULL;
@@ -3198,6 +3203,8 @@ static NTSTATUS cmd_samr_setuserinfo_int(struct rpc_pipe_client *cli,
goto done;
}
+ generate_nonce_buffer(salt.data, salt.length);
+
switch(level) {
case 18:
case 21:
@@ -3220,6 +3227,7 @@ static NTSTATUS cmd_samr_setuserinfo_int(struct rpc_pipe_client *cli,
case 31:
status = init_samr_CryptPasswordAES(frame,
param,
+ &salt,
&session_key,
&pwd_buf_aes);
if (!NT_STATUS_IS_OK(status)) {
diff --git a/source4/libnet/libnet_passwd.c b/source4/libnet/libnet_passwd.c
index 4f662110e55..a1672104824 100644
--- a/source4/libnet/libnet_passwd.c
+++ b/source4/libnet/libnet_passwd.c
@@ -57,13 +57,13 @@ static NTSTATUS libnet_ChangePassword_samr_aes(TALLOC_CTX *mem_ctx,
struct samr_EncryptedPasswordAES pwd_buf = {
.cipher_len = 0
};
- DATA_BLOB iv = {
+ DATA_BLOB salt = {
.data = pwd_buf.salt,
.length = sizeof(pwd_buf.salt),
};
- gnutls_datum_t iv_datum = {
- .data = iv.data,
- .size = iv.length,
+ gnutls_datum_t salt_datum = {
+ .data = pwd_buf.salt,
+ .size = sizeof(pwd_buf.salt),
};
uint64_t pbkdf2_iterations = generate_random_u64_range(5000, 1000000);
NTSTATUS status;
@@ -71,11 +71,11 @@ static NTSTATUS libnet_ChangePassword_samr_aes(TALLOC_CTX *mem_ctx,
E_md4hash(old_password, old_nt_key_data);
- generate_nonce_buffer(iv.data, iv.length);
+ generate_nonce_buffer(salt.data, salt.length);
rc = gnutls_pbkdf2(GNUTLS_MAC_SHA512,
&old_nt_key,
- &iv_datum,
+ &salt_datum,
pbkdf2_iterations,
cek.data,
cek.length);
@@ -86,6 +86,7 @@ static NTSTATUS libnet_ChangePassword_samr_aes(TALLOC_CTX *mem_ctx,
status = init_samr_CryptPasswordAES(mem_ctx,
new_password,
+ &salt,
&cek,
&pwd_buf);
data_blob_clear(&cek);
diff --git a/source4/torture/rpc/samr.c b/source4/torture/rpc/samr.c
index de354659067..0b1880efa18 100644
--- a/source4/torture/rpc/samr.c
+++ b/source4/torture/rpc/samr.c
@@ -783,6 +783,11 @@ static bool test_SetUserPass_32(struct dcerpc_pipe *p, struct torture_context *t
struct samr_SetUserInfo s;
union samr_UserInfo u;
DATA_BLOB session_key;
+ uint8_t salt_data[16];
+ DATA_BLOB salt = {
+ .data = salt_data,
+ .length = sizeof(salt_data),
+ };
char *newpass = NULL;
struct dcerpc_binding_handle *b = p->binding_handle;
struct samr_GetUserPwInfo pwp;
@@ -818,8 +823,11 @@ static bool test_SetUserPass_32(struct dcerpc_pipe *p, struct torture_context *t
return false;
}
+ generate_nonce_buffer(salt.data, salt.length);
+
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info32.password);
torture_assert_ntstatus_ok(tctx,
@@ -852,6 +860,7 @@ static bool test_SetUserPass_32(struct dcerpc_pipe *p, struct torture_context *t
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info32.password);
torture_assert_ntstatus_ok(tctx,
@@ -896,6 +905,11 @@ static bool test_SetUserPass_31(struct dcerpc_pipe *p, struct torture_context *t
union samr_UserInfo u;
bool ret = true;
DATA_BLOB session_key;
+ uint8_t salt_data[16];
+ DATA_BLOB salt = {
+ .data = salt_data,
+ .length = sizeof(salt_data),
+ };
char *newpass;
struct dcerpc_binding_handle *b = p->binding_handle;
struct samr_GetUserPwInfo pwp;
@@ -931,8 +945,11 @@ static bool test_SetUserPass_31(struct dcerpc_pipe *p, struct torture_context *t
return false;
}
+ generate_nonce_buffer(salt.data, salt.length);
+
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info31.password);
torture_assert_ntstatus_ok(tctx,
@@ -959,6 +976,7 @@ static bool test_SetUserPass_31(struct dcerpc_pipe *p, struct torture_context *t
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info31.password);
torture_assert_ntstatus_ok(tctx,
@@ -1381,6 +1399,11 @@ static bool test_SetUserPass_level_ex(struct dcerpc_pipe *p,
union samr_UserInfo u;
bool ret = true;
DATA_BLOB session_key;
+ uint8_t salt_data[16];
+ DATA_BLOB salt = {
+ .data = salt_data,
+ .length = sizeof(salt_data),
+ };
char *newpass;
struct dcerpc_binding_handle *b = p->binding_handle;
struct samr_GetUserPwInfo pwp;
@@ -1490,6 +1513,8 @@ static bool test_SetUserPass_level_ex(struct dcerpc_pipe *p,
return false;
}
+ generate_nonce_buffer(salt.data, salt.length);
+
switch (level) {
case 18:
{
@@ -1561,6 +1586,7 @@ static bool test_SetUserPass_level_ex(struct dcerpc_pipe *p,
case 31:
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info31.password);
@@ -1568,6 +1594,7 @@ static bool test_SetUserPass_level_ex(struct dcerpc_pipe *p,
case 32:
status = init_samr_CryptPasswordAES(tctx,
newpass,
+ &salt,
&session_key,
&u.info32.password);
--
2.37.3
From 1d630363c9b2497266e418aad89c55d5b51a63ad Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Mon, 17 Oct 2022 09:02:28 +0200
Subject: [PATCH 3/5] s4:libnet: If we successfully changed the password we are
done
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15206
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
---
source4/libnet/libnet_passwd.c | 32 ++++++++++++++++++--------------
1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/source4/libnet/libnet_passwd.c b/source4/libnet/libnet_passwd.c
index a1672104824..b17614bcd97 100644
--- a/source4/libnet/libnet_passwd.c
+++ b/source4/libnet/libnet_passwd.c
@@ -101,7 +101,7 @@ static NTSTATUS libnet_ChangePassword_samr_aes(TALLOC_CTX *mem_ctx,
r.in.password = &pwd_buf;
status = dcerpc_samr_ChangePasswordUser4_r(h, mem_ctx, &r);
- if (NT_STATUS_IS_OK(status)) {
+ if (!NT_STATUS_IS_OK(status)) {
goto done;
}
if (!NT_STATUS_IS_OK(r.out.result)) {
@@ -112,6 +112,7 @@ static NTSTATUS libnet_ChangePassword_samr_aes(TALLOC_CTX *mem_ctx,
account->string,
nt_errstr(status));
status = r.out.result;
+ goto done;
}
done:
@@ -424,20 +425,23 @@ static NTSTATUS libnet_ChangePassword_samr(struct libnet_context *ctx, TALLOC_CT
r->samr.in.oldpassword,
r->samr.in.newpassword,
&(r->samr.out.error_string));
- if (!NT_STATUS_IS_OK(status)) {
- if (NT_STATUS_EQUAL(status,
- NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
- NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED) ||
- NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
- /*
- * Don't fallback to RC4 based SAMR if weak crypto is not
- * allowed.
- */
- if (lpcfg_weak_crypto(ctx->lp_ctx) ==
- SAMBA_WEAK_CRYPTO_DISALLOWED) {
- goto disconnect;
- }
+ if (NT_STATUS_IS_OK(status)) {
+ goto disconnect;
+ } else if (NT_STATUS_EQUAL(status,
+ NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
+ /*
+ * Don't fallback to RC4 based SAMR if weak crypto is not
+ * allowed.
+ */
+ if (lpcfg_weak_crypto(ctx->lp_ctx) ==
+ SAMBA_WEAK_CRYPTO_DISALLOWED) {
+ goto disconnect;
}
+ } else {
+ /* libnet_ChangePassword_samr_aes is implemented and failed */
+ goto disconnect;
}
status = libnet_ChangePassword_samr_rc4(
--
2.37.3
From 9a4a169ab34641afb87e7f81708c9a72b321879e Mon Sep 17 00:00:00 2001
From: Noel Power <noel.power@suse.com>
Date: Fri, 21 Oct 2022 17:40:36 +0100
Subject: [PATCH 4/5] s4/rpc_server/sambr: don't mutate the return of
samdb_set_password_aes
prior to this commit return of samdb_set_password_aes was set to
NT_STATUS_WRONG_PASSWORD on failure. Useful status that should be
returned such as NT_STATUS_PASSWORD_RESTRICTION are swallowed here
otherwise (and in this case can be partially responsible for failures
in test samba.tests.auth_log_pass_change (with later gnutls)
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
---
source4/rpc_server/samr/samr_password.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/source4/rpc_server/samr/samr_password.c b/source4/rpc_server/samr/samr_password.c
index 4691f9a47a9..b581be6361c 100644
--- a/source4/rpc_server/samr/samr_password.c
+++ b/source4/rpc_server/samr/samr_password.c
@@ -250,7 +250,6 @@ NTSTATUS dcesrv_samr_ChangePasswordUser4(struct dcesrv_call_state *dce_call,
if (!NT_STATUS_IS_OK(status)) {
ldb_transaction_cancel(sam_ctx);
- status = NT_STATUS_WRONG_PASSWORD;
goto done;
}
--
2.37.3
From b8b36ecba0f22dbc203c12627ebd629c2437c635 Mon Sep 17 00:00:00 2001
From: Noel Power <noel.power@suse.com>
Date: Fri, 21 Oct 2022 17:14:44 +0100
Subject: [PATCH 5/5] python/samba/tests: fix samba.tests.auth_log_pass_change
for later gnutls
later gnutls that support GNUTLS_PBKDF2 currently fail,
we need to conditionally switch test data to reflect use of
'samr_ChangePasswordUser3' or 'samr_ChangePasswordUser4'
depending on whether GNUTLS_PBKDF2 is supported or not
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
---
python/samba/tests/auth_log_pass_change.py | 20 ++++++++++++++++----
source4/selftest/tests.py | 9 ++++++---
2 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/python/samba/tests/auth_log_pass_change.py b/python/samba/tests/auth_log_pass_change.py
index 972af2158dd..1ca46c586b3 100644
--- a/python/samba/tests/auth_log_pass_change.py
+++ b/python/samba/tests/auth_log_pass_change.py
@@ -72,6 +72,18 @@ class AuthLogPassChangeTests(samba.tests.auth_log_base.AuthLogTestBase):
# discard any auth log messages for the password setup
self.discardMessages()
+ gnutls_pbkdf2_support = samba.tests.env_get_var_value(
+ 'GNUTLS_PBKDF2_SUPPORT',
+ allow_missing=True)
+ if gnutls_pbkdf2_support is None:
+ gnutls_pbkdf2_support = '0'
+ self.gnutls_pbkdf2_support = bool(int(gnutls_pbkdf2_support))
+
+ def _authDescription(self):
+ if self.gnutls_pbkdf2_support:
+ return "samr_ChangePasswordUser4"
+ else:
+ return "samr_ChangePasswordUser3"
def tearDown(self):
super(AuthLogPassChangeTests, self).tearDown()
@@ -83,7 +95,7 @@ class AuthLogPassChangeTests(samba.tests.auth_log_base.AuthLogTestBase):
(msg["Authentication"]["serviceDescription"] ==
"SAMR Password Change") and
(msg["Authentication"]["authDescription"] ==
- "samr_ChangePasswordUser3") and
+ self._authDescription()) and
(msg["Authentication"]["eventId"] ==
EVT_ID_SUCCESSFUL_LOGON) and
(msg["Authentication"]["logonType"] ==
@@ -109,7 +121,7 @@ class AuthLogPassChangeTests(samba.tests.auth_log_base.AuthLogTestBase):
(msg["Authentication"]["serviceDescription"] ==
"SAMR Password Change") and
(msg["Authentication"]["authDescription"] ==
- "samr_ChangePasswordUser3") and
+ self._authDescription()) and
(msg["Authentication"]["eventId"] ==
EVT_ID_UNSUCCESSFUL_LOGON) and
(msg["Authentication"]["logonType"] ==
@@ -141,7 +153,7 @@ class AuthLogPassChangeTests(samba.tests.auth_log_base.AuthLogTestBase):
(msg["Authentication"]["serviceDescription"] ==
"SAMR Password Change") and
(msg["Authentication"]["authDescription"] ==
- "samr_ChangePasswordUser3") and
+ self._authDescription()) and
(msg["Authentication"]["eventId"] ==
EVT_ID_UNSUCCESSFUL_LOGON) and
(msg["Authentication"]["logonType"] ==
@@ -174,7 +186,7 @@ class AuthLogPassChangeTests(samba.tests.auth_log_base.AuthLogTestBase):
(msg["Authentication"]["serviceDescription"] ==
"SAMR Password Change") and
(msg["Authentication"]["authDescription"] ==
- "samr_ChangePasswordUser3") and
+ self._authDescription()) and
(msg["Authentication"]["eventId"] ==
EVT_ID_UNSUCCESSFUL_LOGON) and
(msg["Authentication"]["logonType"] ==
diff --git a/source4/selftest/tests.py b/source4/selftest/tests.py
index a803d4704ea..c92105586a7 100755
--- a/source4/selftest/tests.py
+++ b/source4/selftest/tests.py
@@ -1094,9 +1094,11 @@ if have_heimdal_support:
environ={'CLIENT_IP': '10.53.57.11',
'SOCKET_WRAPPER_DEFAULT_IFACE': 11})
planoldpythontestsuite("ad_dc_smb1", "samba.tests.auth_log_pass_change",
- extra_args=['-U"$USERNAME%$PASSWORD"'])
+ extra_args=['-U"$USERNAME%$PASSWORD"'],
+ environ={'GNUTLS_PBKDF2_SUPPORT': gnutls_pbkdf2_support})
planoldpythontestsuite("ad_dc_ntvfs", "samba.tests.auth_log_pass_change",
- extra_args=['-U"$USERNAME%$PASSWORD"'])
+ extra_args=['-U"$USERNAME%$PASSWORD"'],
+ environ={'GNUTLS_PBKDF2_SUPPORT': gnutls_pbkdf2_support})
# these tests use a NCA local RPC connection, so always run on the
# :local testenv, and so don't need to fake a client connection
@@ -1113,7 +1115,8 @@ if have_heimdal_support:
"samba.tests.auth_log_winbind",
extra_args=['-U"$DC_USERNAME%$DC_PASSWORD"'])
planoldpythontestsuite("ad_dc", "samba.tests.audit_log_pass_change",
- extra_args=['-U"$USERNAME%$PASSWORD"'])
+ extra_args=['-U"$USERNAME%$PASSWORD"'],
+ environ={'GNUTLS_PBKDF2_SUPPORT': gnutls_pbkdf2_support})
planoldpythontestsuite("ad_dc", "samba.tests.audit_log_dsdb",
extra_args=['-U"$USERNAME%$PASSWORD"'])
planoldpythontestsuite("ad_dc", "samba.tests.group_audit",
--
2.37.3