rpms/samba
7
0
Fork 0
Code Issues Pull Requests Releases Activity

Fix trust relationship between workstation and DC

Browse Source 
resolves: rhbz#2222883
This commit is contained in:
Pavel Filipenský 2023-07-17 11:39:20 +02:00
parent 05d787ca22
commit 81bef6480f
5 changed files with 362 additions and 1260 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
samba-4.16-waf-crypto.patch
View File

@ -1,77 +0,0 @@
From 41d3efebcf6abab9119f9b0f97c86c1c48739fee Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Mon, 4 Apr 2022 11:24:04 +0200
Subject: [PATCH 1/2] waf: Check for GnuTLS earlier
As GnuTLS is an essential part we need to check for it early so we can react on
GnuTLS features in other wscripts.
Signed-off-by: Andreas Schneider <asn@samba.org>
---
wscript | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/wscript b/wscript
index d8220b35095..5b85d9a1682 100644
--- a/wscript
+++ b/wscript
@@ -189,6 +189,8 @@ def configure(conf):
conf.RECURSE('dynconfig')
conf.RECURSE('selftest')
+ conf.PROCESS_SEPARATE_RULE('system_gnutls')
+
conf.CHECK_CFG(package='zlib', minversion='1.2.3',
args='--cflags --libs',
mandatory=True)
@@ -297,8 +299,6 @@ def configure(conf):
if not conf.CONFIG_GET('KRB5_VENDOR'):
conf.PROCESS_SEPARATE_RULE('embedded_heimdal')
- conf.PROCESS_SEPARATE_RULE('system_gnutls')
-
conf.RECURSE('source4/dsdb/samdb/ldb_modules')
conf.RECURSE('source4/ntvfs/sysdep')
conf.RECURSE('lib/util')
--
2.35.1
From 63701a28116afc1550c23cb5f7b9d6e366fd1270 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Mon, 4 Apr 2022 11:25:31 +0200
Subject: [PATCH 2/2] third_party:waf: Do not recurse in aesni-intel if GnuTLS
provides the cipher
Signed-off-by: Andreas Schneider <asn@samba.org>
---
third_party/wscript | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/third_party/wscript b/third_party/wscript
index 1f4bc1ce1d7..a17c15bcaa7 100644
--- a/third_party/wscript
+++ b/third_party/wscript
@@ -5,7 +5,8 @@ from waflib import Options
def configure(conf):
conf.RECURSE('cmocka')
conf.RECURSE('popt')
- conf.RECURSE('aesni-intel')
+ if not conf.CONFIG_SET('HAVE_GNUTLS_AES_CMAC'):
+ conf.RECURSE('aesni-intel')
if conf.CONFIG_GET('ENABLE_SELFTEST'):
conf.RECURSE('socket_wrapper')
conf.RECURSE('nss_wrapper')
@@ -18,7 +19,8 @@ def configure(conf):
def build(bld):
bld.RECURSE('cmocka')
bld.RECURSE('popt')
- bld.RECURSE('aesni-intel')
+ if not bld.CONFIG_SET('HAVE_GNUTLS_AES_CMAC'):
+ bld.RECURSE('aesni-intel')
if bld.CONFIG_GET('SOCKET_WRAPPER'):
bld.RECURSE('socket_wrapper')
if bld.CONFIG_GET('NSS_WRAPPER'):
--
2.35.1

540
samba-4.17-fix-changeuserpassword4.patch
View File

@ -1,540 +0,0 @@
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

356
samba-4.18-netlogon.patch Normal file
View File

@ -0,0 +1,356 @@
From e66efc77d8ecbe7cb42a7a8063b01906d7c49515 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 17:20:32 +0200
Subject: [PATCH 1/4] netlogon.idl: add support for netr_LogonGetCapabilities
response level 2
We don't have any documentation about this yet, but tests against
a Windows Server 2022 patched with KB5028166 revealed that
the response for query_level=2 is exactly the same as
for querey_level=1.
Until we know the reason for query_level=2 we won't
use it as client nor support it in the server, but
we want ndrdump to work.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 5f87888ed53320538cf773d64868390d8641a40e)
---
librpc/idl/netlogon.idl | 1 +
1 file changed, 1 insertion(+)
diff --git a/librpc/idl/netlogon.idl b/librpc/idl/netlogon.idl
index e563e114900b..c77151af26b1 100644
--- a/librpc/idl/netlogon.idl
+++ b/librpc/idl/netlogon.idl
@@ -1241,6 +1241,7 @@ interface netlogon
/* Function 0x15 */
typedef [switch_type(uint32)] union {
[case(1)] netr_NegotiateFlags server_capabilities;
+ [case(2)] netr_NegotiateFlags server_capabilities;
} netr_Capabilities;
NTSTATUS netr_LogonGetCapabilities(
--
2.34.1
From bfa6a3e1d816ddcb508e7e0075386a8bf030561d Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 17:25:05 +0200
Subject: [PATCH 2/4] s4:torture/rpc: let rpc.schannel also check
netr_LogonGetCapabilities with different levels
The important change it that we expect DCERPC_NCA_S_FAULT_INVALID_TAG
for unsupported query_levels, we allow it to work with servers
with or without support for query_level=2.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 404ce08e9088968311c714e756f5d58ce2cef715)
---
.../knownfail.d/netr_LogonGetCapabilities | 3 +
source4/torture/rpc/netlogon.c | 77 ++++++++++++++++++-
2 files changed, 79 insertions(+), 1 deletion(-)
create mode 100644 selftest/knownfail.d/netr_LogonGetCapabilities
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
new file mode 100644
index 000000000000..30aadf3bb9d5
--- /dev/null
+++ b/selftest/knownfail.d/netr_LogonGetCapabilities
@@ -0,0 +1,3 @@
+^samba3.rpc.schannel.*\.schannel\(nt4_dc
+^samba3.rpc.schannel.*\.schannel\(ad_dc
+^samba4.rpc.schannel.*\.schannel\(ad_dc
diff --git a/source4/torture/rpc/netlogon.c b/source4/torture/rpc/netlogon.c
index 1f068eb78265..a3d190f13dd8 100644
--- a/source4/torture/rpc/netlogon.c
+++ b/source4/torture/rpc/netlogon.c
@@ -2056,8 +2056,47 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
r.out.capabilities = &capabilities;
r.out.return_authenticator = &return_auth;
- torture_comment(tctx, "Testing LogonGetCapabilities\n");
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=0\n");
+ r.in.query_level = 0;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an unknown query level returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE,
+ "LogonGetCapabilities query_level=0 failed");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=3\n");
+
+ r.in.query_level = 3;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an unknown query level returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ torture_assert_ntstatus_equal(tctx, status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE,
+ "LogonGetCapabilities query_level=0 failed");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=1\n");
+
+ r.in.query_level = 1;
ZERO_STRUCT(return_auth);
/*
@@ -2077,6 +2116,42 @@ bool test_netlogon_capabilities(struct dcerpc_pipe *p, struct torture_context *t
*creds = tmp_creds;
+ torture_assert(tctx, netlogon_creds_client_check(creds,
+ &r.out.return_authenticator->cred),
+ "Credential chaining failed");
+
+ torture_assert_int_equal(tctx, creds->negotiate_flags,
+ capabilities.server_capabilities,
+ "negotiate flags");
+
+ torture_comment(tctx, "Testing LogonGetCapabilities with query_level=2\n");
+
+ r.in.query_level = 2;
+ ZERO_STRUCT(return_auth);
+
+ /*
+ * we need to operate on a temporary copy of creds
+ * because dcerpc_netr_LogonGetCapabilities with
+ * an query level 2 may returns DCERPC_NCA_S_FAULT_INVALID_TAG
+ * => NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ * without looking a the authenticator.
+ */
+ tmp_creds = *creds;
+ netlogon_creds_client_authenticator(&tmp_creds, &auth);
+
+ status = dcerpc_netr_LogonGetCapabilities_r(b, tctx, &r);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE)) {
+ /*
+ * an server without KB5028166 returns
+ * DCERPC_NCA_S_FAULT_INVALID_TAG =>
+ * NT_STATUS_RPC_ENUM_VALUE_OUT_OF_RANGE
+ */
+ return true;
+ }
+ torture_assert_ntstatus_ok(tctx, status, "LogonGetCapabilities query_level=2 failed");
+
+ *creds = tmp_creds;
+
torture_assert(tctx, netlogon_creds_client_check(creds,
&r.out.return_authenticator->cred),
"Credential chaining failed");
--
2.34.1
From 6f161300093b1b51fc9865155163cf7b3a42d802 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 16:11:48 +0200
Subject: [PATCH 3/4] s4:rpc_server:netlogon: generate FAULT_INVALID_TAG for
invalid netr_LogonGetCapabilities levels
This is important as Windows clients with KB5028166 seem to
call netr_LogonGetCapabilities with query_level=2 after
a call with query_level=1.
An unpatched Windows Server returns DCERPC_NCA_S_FAULT_INVALID_TAG
for query_level values other than 1.
While Samba tries to return NT_STATUS_NOT_SUPPORTED, but
later fails to marshall the response, which results
in DCERPC_FAULT_BAD_STUB_DATA instead.
Because we don't have any documentation for level 2 yet,
we just try to behave like an unpatched server and
generate DCERPC_NCA_S_FAULT_INVALID_TAG instead of
DCERPC_FAULT_BAD_STUB_DATA.
Which allows patched Windows clients to keep working
against a Samba DC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit d5f1097b6220676d56ed5fc6707acf667b704518)
---
.../knownfail.d/netr_LogonGetCapabilities | 2 --
source4/rpc_server/netlogon/dcerpc_netlogon.c | 28 ++++++++++++++++---
2 files changed, 24 insertions(+), 6 deletions(-)
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
index 30aadf3bb9d5..99c7ac711ede 100644
--- a/selftest/knownfail.d/netr_LogonGetCapabilities
+++ b/selftest/knownfail.d/netr_LogonGetCapabilities
@@ -1,3 +1 @@
^samba3.rpc.schannel.*\.schannel\(nt4_dc
-^samba3.rpc.schannel.*\.schannel\(ad_dc
-^samba4.rpc.schannel.*\.schannel\(ad_dc
diff --git a/source4/rpc_server/netlogon/dcerpc_netlogon.c b/source4/rpc_server/netlogon/dcerpc_netlogon.c
index 314b469a718a..e203e04143d7 100644
--- a/source4/rpc_server/netlogon/dcerpc_netlogon.c
+++ b/source4/rpc_server/netlogon/dcerpc_netlogon.c
@@ -2359,6 +2359,30 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
struct netlogon_creds_CredentialState *creds;
NTSTATUS status;
+ switch (r->in.query_level) {
+ case 1:
+ break;
+ case 2:
+ /*
+ * Until we know the details behind KB5028166
+ * just return DCERPC_NCA_S_FAULT_INVALID_TAG
+ * like an unpatched Windows Server.
+ */
+ FALL_THROUGH;
+ default:
+ /*
+ * There would not be a way to marshall the
+ * the response. Which would mean our final
+ * ndr_push would fail an we would return
+ * an RPC-level fault with DCERPC_FAULT_BAD_STUB_DATA.
+ *
+ * But it's important to match a Windows server
+ * especially before KB5028166, see also our bug #15418
+ * Otherwise Windows client would stop talking to us.
+ */
+ DCESRV_FAULT(DCERPC_NCA_S_FAULT_INVALID_TAG);
+ }
+
status = dcesrv_netr_creds_server_step_check(dce_call,
mem_ctx,
r->in.computer_name,
@@ -2370,10 +2394,6 @@ static NTSTATUS dcesrv_netr_LogonGetCapabilities(struct dcesrv_call_state *dce_c
}
NT_STATUS_NOT_OK_RETURN(status);
- if (r->in.query_level != 1) {
- return NT_STATUS_NOT_SUPPORTED;
- }
-
r->out.capabilities->server_capabilities = creds->negotiate_flags;
return NT_STATUS_OK;
--
2.34.1
From 4611b5bd5bb697a19a67f78624c498cbe952763b Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 15 Jul 2023 16:11:48 +0200
Subject: [PATCH 4/4] s3:rpc_server:netlogon: generate FAULT_INVALID_TAG for
invalid netr_LogonGetCapabilities levels
This is important as Windows clients with KB5028166 seem to
call netr_LogonGetCapabilities with query_level=2 after
a call with query_level=1.
An unpatched Windows Server returns DCERPC_NCA_S_FAULT_INVALID_TAG
for query_level values other than 1.
While Samba tries to return NT_STATUS_NOT_SUPPORTED, but
later fails to marshall the response, which results
in DCERPC_FAULT_BAD_STUB_DATA instead.
Because we don't have any documentation for level 2 yet,
we just try to behave like an unpatched server and
generate DCERPC_NCA_S_FAULT_INVALID_TAG instead of
DCERPC_FAULT_BAD_STUB_DATA.
Which allows patched Windows clients to keep working
against a Samba DC.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15418
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Mon Jul 17 07:35:09 UTC 2023 on atb-devel-224
(cherry picked from commit dfeabce44fbb78083fbbb2aa634fc4172cf83db9)
---
.../knownfail.d/netr_LogonGetCapabilities | 1 -
source3/rpc_server/netlogon/srv_netlog_nt.c | 29 ++++++++++++++++---
2 files changed, 25 insertions(+), 5 deletions(-)
delete mode 100644 selftest/knownfail.d/netr_LogonGetCapabilities
diff --git a/selftest/knownfail.d/netr_LogonGetCapabilities b/selftest/knownfail.d/netr_LogonGetCapabilities
deleted file mode 100644
index 99c7ac711ede..000000000000
--- a/selftest/knownfail.d/netr_LogonGetCapabilities
+++ /dev/null
@@ -1 +0,0 @@
-^samba3.rpc.schannel.*\.schannel\(nt4_dc
diff --git a/source3/rpc_server/netlogon/srv_netlog_nt.c b/source3/rpc_server/netlogon/srv_netlog_nt.c
index 72c50638c729..d19e2be650fb 100644
--- a/source3/rpc_server/netlogon/srv_netlog_nt.c
+++ b/source3/rpc_server/netlogon/srv_netlog_nt.c
@@ -2284,6 +2284,31 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
struct netlogon_creds_CredentialState *creds;
NTSTATUS status;
+ switch (r->in.query_level) {
+ case 1:
+ break;
+ case 2:
+ /*
+ * Until we know the details behind KB5028166
+ * just return DCERPC_NCA_S_FAULT_INVALID_TAG
+ * like an unpatched Windows Server.
+ */
+ FALL_THROUGH;
+ default:
+ /*
+ * There would not be a way to marshall the
+ * the response. Which would mean our final
+ * ndr_push would fail an we would return
+ * an RPC-level fault with DCERPC_FAULT_BAD_STUB_DATA.
+ *
+ * But it's important to match a Windows server
+ * especially before KB5028166, see also our bug #15418
+ * Otherwise Windows client would stop talking to us.
+ */
+ p->fault_state = DCERPC_NCA_S_FAULT_INVALID_TAG;
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
become_root();
status = dcesrv_netr_creds_server_step_check(p->dce_call,
p->mem_ctx,
@@ -2296,10 +2321,6 @@ NTSTATUS _netr_LogonGetCapabilities(struct pipes_struct *p,
return status;
}
- if (r->in.query_level != 1) {
- return NT_STATUS_NOT_SUPPORTED;
- }
-
r->out.capabilities->server_capabilities = creds->negotiate_flags;
return NT_STATUS_OK;
--
2.34.1

642
samba-s4u.patch
View File

@ -1,642 +0,0 @@
From 5d7ec9a00b6f4c6768c606d37d235415f2006445 Mon Sep 17 00:00:00 2001
From: Isaac Boukris <iboukris@gmail.com>
Date: Fri, 27 Sep 2019 18:25:03 +0300
Subject: [PATCH 1/3] mit-kdc: add basic loacl realm S4U support
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Pair-Programmed-With: Andreas Schneider <asn@samba.org>
---
source4/kdc/mit-kdb/kdb_samba_policies.c | 124 +++++++++++------------
source4/kdc/mit_samba.c | 47 ++-------
source4/kdc/mit_samba.h | 6 +-
3 files changed, 71 insertions(+), 106 deletions(-)
diff --git a/source4/kdc/mit-kdb/kdb_samba_policies.c b/source4/kdc/mit-kdb/kdb_samba_policies.c
index 793fe366c35..22534c09974 100644
--- a/source4/kdc/mit-kdb/kdb_samba_policies.c
+++ b/source4/kdc/mit-kdb/kdb_samba_policies.c
@@ -200,13 +200,17 @@ static krb5_error_code ks_verify_pac(krb5_context context,
krb5_keyblock *krbtgt_key,
krb5_timestamp authtime,
krb5_authdata **tgt_auth_data,
- krb5_pac *pac)
+ krb5_pac *out_pac)
{
struct mit_samba_context *mit_ctx;
krb5_authdata **authdata = NULL;
- krb5_pac ipac = NULL;
- DATA_BLOB logon_data = { NULL, 0 };
+ krb5_keyblock *header_server_key = NULL;
+ krb5_key_data *impersonator_kd = NULL;
+ krb5_keyblock impersonator_key = {0};
krb5_error_code code;
+ krb5_pac pac;
+
+ *out_pac = NULL;
mit_ctx = ks_get_context(context);
if (mit_ctx == NULL) {
@@ -238,41 +242,43 @@ static krb5_error_code ks_verify_pac(krb5_context context,
code = krb5_pac_parse(context,
authdata[0]->contents,
authdata[0]->length,
- &ipac);
+ &pac);
if (code != 0) {
goto done;
}
- /* TODO: verify this is correct
- *
- * In the constrained delegation case, the PAC is from a service
- * ticket rather than a TGT; we must verify the server and KDC
- * signatures to assert that the server did not forge the PAC.
+ /*
+ * For constrained delegation in MIT version < 1.18 we aren't provided
+ * with the 2nd ticket server key to verify the PAC.
+ * We can workaround that by fetching the key from the client db entry,
+ * which is the impersonator account in that version.
+ * TODO: use the provided entry in the new 1.18 version.
*/
if (flags & KRB5_KDB_FLAG_CONSTRAINED_DELEGATION) {
- code = krb5_pac_verify(context,
- ipac,
- authtime,
- client_princ,
- server_key,
- krbtgt_key);
+ /* The impersonator must be local. */
+ if (client == NULL) {
+ code = KRB5KDC_ERR_BADOPTION;
+ goto done;
+ }
+ /* Fetch and decrypt 2nd ticket server's current key. */
+ code = krb5_dbe_find_enctype(context, client, -1, -1, 0,
+ &impersonator_kd);
+ if (code != 0) {
+ goto done;
+ }
+ code = krb5_dbe_decrypt_key_data(context, NULL,
+ impersonator_kd,
+ &impersonator_key, NULL);
+ if (code != 0) {
+ goto done;
+ }
+ header_server_key = &impersonator_key;
} else {
- code = krb5_pac_verify(context,
- ipac,
- authtime,
- client_princ,
- krbtgt_key,
- NULL);
- }
- if (code != 0) {
- goto done;
+ header_server_key = krbtgt_key;
}
- /* check and update PAC */
- code = krb5_pac_parse(context,
- authdata[0]->contents,
- authdata[0]->length,
- pac);
+ code = krb5_pac_verify(context, pac, authtime, client_princ,
+ header_server_key, NULL);
if (code != 0) {
goto done;
}
@@ -280,17 +286,22 @@ static krb5_error_code ks_verify_pac(krb5_context context,
code = mit_samba_reget_pac(mit_ctx,
context,
flags,
- client_princ,
client,
server,
krbtgt,
krbtgt_key,
- pac);
+ &pac);
+ if (code != 0) {
+ goto done;
+ }
+
+ *out_pac = pac;
+ pac = NULL;
done:
+ krb5_free_keyblock_contents(context, &impersonator_key);
krb5_free_authdata(context, authdata);
- krb5_pac_free(context, ipac);
- free(logon_data.data);
+ krb5_pac_free(context, pac);
return code;
}
@@ -319,6 +330,7 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
krb5_authdata **pac_auth_data = NULL;
krb5_authdata **authdata = NULL;
krb5_boolean is_as_req;
+ krb5_const_principal pac_client;
krb5_error_code code;
krb5_pac pac = NULL;
krb5_data pac_data;
@@ -330,11 +342,6 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
krbtgt = krbtgt == NULL ? local_krbtgt : krbtgt;
krbtgt_key = krbtgt_key == NULL ? local_krbtgt_key : krbtgt_key;
- /* FIXME: We don't support S4U yet */
- if (flags & KRB5_KDB_FLAGS_S4U) {
- return KRB5_KDB_DBTYPE_NOSUP;
- }
-
is_as_req = ((flags & KRB5_KDB_FLAG_CLIENT_REFERRALS_ONLY) != 0);
/*
@@ -395,6 +402,16 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
ks_client_princ = client->princ;
}
+ /* In protocol transition, we are currently not provided with the tgt
+ * client name to verify the PAC, we could probably skip the name
+ * verification and just verify the signatures, but since we don't
+ * support cross-realm nor aliases, we can just use server->princ */
+ if (flags & KRB5_KDB_FLAG_PROTOCOL_TRANSITION) {
+ pac_client = server->princ;
+ } else {
+ pac_client = ks_client_princ;
+ }
+
if (client_entry == NULL) {
client_entry = client;
}
@@ -469,7 +486,7 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
code = ks_verify_pac(context,
flags,
- ks_client_princ,
+ pac_client,
client_entry,
server,
krbtgt,
@@ -515,7 +532,7 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
is_as_req ? "AS-REQ" : "TGS-REQ",
client_name);
code = krb5_pac_sign(context, pac, authtime, ks_client_princ,
- server_key, krbtgt_key, &pac_data);
+ server_key, krbtgt_key, &pac_data);
if (code != 0) {
DBG_ERR("krb5_pac_sign failed: %d\n", code);
goto done;
@@ -541,12 +558,6 @@ krb5_error_code kdb_samba_db_sign_auth_data(krb5_context context,
KRB5_AUTHDATA_IF_RELEVANT,
authdata,
signed_auth_data);
- if (code != 0) {
- goto done;
- }
-
- code = 0;
-
done:
if (client_entry != NULL && client_entry != client) {
ks_free_principal(context, client_entry);
@@ -572,32 +583,13 @@ krb5_error_code kdb_samba_db_check_allowed_to_delegate(krb5_context context,
* server; -> delegating service
* proxy; -> target principal
*/
- krb5_db_entry *delegating_service = discard_const_p(krb5_db_entry, server);
-
- char *target_name = NULL;
- bool is_enterprise;
- krb5_error_code code;
mit_ctx = ks_get_context(context);
if (mit_ctx == NULL) {
return KRB5_KDB_DBNOTINITED;
}
- code = krb5_unparse_name(context, proxy, &target_name);
- if (code) {
- goto done;
- }
-
- is_enterprise = (proxy->type == KRB5_NT_ENTERPRISE_PRINCIPAL);
-
- code = mit_samba_check_s4u2proxy(mit_ctx,
- delegating_service,
- target_name,
- is_enterprise);
-
-done:
- free(target_name);
- return code;
+ return mit_samba_check_s4u2proxy(mit_ctx, server, proxy);
}
diff --git a/source4/kdc/mit_samba.c b/source4/kdc/mit_samba.c
index cb72b5de294..03c2c2ea1de 100644
--- a/source4/kdc/mit_samba.c
+++ b/source4/kdc/mit_samba.c
@@ -517,7 +517,6 @@ int mit_samba_get_pac(struct mit_samba_context *smb_ctx,
krb5_error_code mit_samba_reget_pac(struct mit_samba_context *ctx,
krb5_context context,
int flags,
- krb5_const_principal client_principal,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_db_entry *krbtgt,
@@ -689,7 +688,7 @@ krb5_error_code mit_samba_reget_pac(struct mit_samba_context *ctx,
context,
*pac,
server->princ,
- discard_const(client_principal),
+ client->princ,
deleg_blob);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(0, ("Update delegation info failed: %s\n",
@@ -1081,41 +1080,17 @@ int mit_samba_check_client_access(struct mit_samba_context *ctx,
}
int mit_samba_check_s4u2proxy(struct mit_samba_context *ctx,
- krb5_db_entry *kentry,
- const char *target_name,
- bool is_nt_enterprise_name)
+ const krb5_db_entry *server,
+ krb5_const_principal target_principal)
{
-#if 1
- /*
- * This is disabled because mit_samba_update_pac_data() does not handle
- * S4U_DELEGATION_INFO
- */
-
- return KRB5KDC_ERR_BADOPTION;
-#else
- krb5_principal target_principal;
- int flags = 0;
- int ret;
-
- if (is_nt_enterprise_name) {
- flags = KRB5_PRINCIPAL_PARSE_ENTERPRISE;
- }
-
- ret = krb5_parse_name_flags(ctx->context, target_name,
- flags, &target_principal);
- if (ret) {
- return ret;
- }
-
- ret = samba_kdc_check_s4u2proxy(ctx->context,
- ctx->db_ctx,
- skdc_entry,
- target_principal);
-
- krb5_free_principal(ctx->context, target_principal);
-
- return ret;
-#endif
+ struct samba_kdc_entry *server_skdc_entry =
+ talloc_get_type_abort(server->e_data,
+ struct samba_kdc_entry);
+
+ return samba_kdc_check_s4u2proxy(ctx->context,
+ ctx->db_ctx,
+ server_skdc_entry,
+ target_principal);
}
static krb5_error_code mit_samba_change_pwd_error(krb5_context context,
diff --git a/source4/kdc/mit_samba.h b/source4/kdc/mit_samba.h
index 4431e82a1b2..9370ab533af 100644
--- a/source4/kdc/mit_samba.h
+++ b/source4/kdc/mit_samba.h
@@ -57,7 +57,6 @@ int mit_samba_get_pac(struct mit_samba_context *smb_ctx,
krb5_error_code mit_samba_reget_pac(struct mit_samba_context *ctx,
krb5_context context,
int flags,
- krb5_const_principal client_principal,
krb5_db_entry *client,
krb5_db_entry *server,
krb5_db_entry *krbtgt,
@@ -74,9 +73,8 @@ int mit_samba_check_client_access(struct mit_samba_context *ctx,
DATA_BLOB *e_data);
int mit_samba_check_s4u2proxy(struct mit_samba_context *ctx,
- krb5_db_entry *kentry,
- const char *target_name,
- bool is_nt_enterprise_name);
+ const krb5_db_entry *server,
+ krb5_const_principal target_principal);
int mit_samba_kpasswd_change_password(struct mit_samba_context *ctx,
char *pwd,
--
2.37.1
From 325912375cf54743ab8ea557172a72b870002e9f Mon Sep 17 00:00:00 2001
From: Isaac Boukris <iboukris@gmail.com>
Date: Fri, 27 Sep 2019 18:35:30 +0300
Subject: [PATCH 2/3] krb5-mit: enable S4U client support for MIT build
Signed-off-by: Isaac Boukris <iboukris@gmail.com>
Pair-Programmed-With: Andreas Schneider <asn@samba.org>
---
lib/krb5_wrap/krb5_samba.c | 185 ++++++++++++++++++++++++++
lib/krb5_wrap/krb5_samba.h | 2 -
source4/auth/kerberos/kerberos_util.c | 11 --
3 files changed, 185 insertions(+), 13 deletions(-)
diff --git a/lib/krb5_wrap/krb5_samba.c b/lib/krb5_wrap/krb5_samba.c
index 4321f07ca09..3fd95e47fca 100644
--- a/lib/krb5_wrap/krb5_samba.c
+++ b/lib/krb5_wrap/krb5_samba.c
@@ -2702,6 +2702,191 @@ krb5_error_code smb_krb5_kinit_s4u2_ccache(krb5_context ctx,
return 0;
}
+
+#else /* MIT */
+
+static bool princ_compare_no_dollar(krb5_context ctx,
+ krb5_principal a,
+ krb5_principal b)
+{
+ bool cmp;
+ krb5_principal mod = NULL;
+
+ if (a->length == 1 && b->length == 1 &&
+ a->data[0].length != 0 && b->data[0].length != 0 &&
+ a->data[0].data[a->data[0].length -1] !=
+ b->data[0].data[b->data[0].length -1]) {
+ if (a->data[0].data[a->data[0].length -1] == '$') {
+ mod = a;
+ mod->data[0].length--;
+ } else if (b->data[0].data[b->data[0].length -1] == '$') {
+ mod = b;
+ mod->data[0].length--;
+ }
+ }
+
+ cmp = krb5_principal_compare_flags(ctx, a, b,
+ KRB5_PRINCIPAL_COMPARE_CASEFOLD);
+
+ if (mod != NULL) {
+ mod->data[0].length++;
+ }
+
+ return cmp;
+}
+
+krb5_error_code smb_krb5_kinit_s4u2_ccache(krb5_context ctx,
+ krb5_ccache store_cc,
+ krb5_principal init_principal,
+ const char *init_password,
+ krb5_principal impersonate_principal,
+ const char *self_service,
+ const char *target_service,
+ krb5_get_init_creds_opt *krb_options,
+ time_t *expire_time,
+ time_t *kdc_time)
+{
+ krb5_error_code code;
+ krb5_principal self_princ = NULL;
+ krb5_principal target_princ = NULL;
+ krb5_creds *store_creds;
+ krb5_creds *s4u2self_creds = NULL;
+ krb5_creds *s4u2proxy_creds = NULL;
+ krb5_creds init_creds = {0};
+ krb5_creds mcreds = {0};
+ krb5_flags options = KRB5_GC_NO_STORE;
+ krb5_ccache tmp_cc;
+ bool s4u2proxy;
+
+ code = krb5_cc_new_unique(ctx, "MEMORY", NULL, &tmp_cc);
+ if (code != 0) {
+ return code;
+ }
+
+ code = krb5_get_init_creds_password(ctx, &init_creds,
+ init_principal,
+ init_password,
+ NULL, NULL,
+ 0,
+ NULL,
+ krb_options);
+ if (code != 0) {
+ goto done;
+ }
+
+ code = krb5_cc_initialize(ctx, tmp_cc, init_creds.client);
+ if (code != 0) {
+ goto done;
+ }
+
+ code = krb5_cc_store_cred(ctx, tmp_cc, &init_creds);
+ if (code != 0) {
+ goto done;
+ }
+
+ /*
+ * Check if we also need S4U2Proxy or if S4U2Self is
+ * enough in order to get a ticket for the target.
+ */
+ if (target_service == NULL) {
+ s4u2proxy = false;
+ } else if (strcmp(target_service, self_service) == 0) {
+ s4u2proxy = false;
+ } else {
+ s4u2proxy = true;
+ }
+
+ code = krb5_parse_name(ctx, self_service, &self_princ);
+ if (code != 0) {
+ goto done;
+ }
+
+ /* MIT lacks aliases support in S4U, for S4U2Self we require the tgt
+ * client and the request server to be the same principal name. */
+ if (!princ_compare_no_dollar(ctx, init_creds.client, self_princ)) {
+ code = KRB5KDC_ERR_PADATA_TYPE_NOSUPP;
+ goto done;
+ }
+
+ mcreds.client = impersonate_principal;
+ mcreds.server = init_creds.client;
+
+ code = krb5_get_credentials_for_user(ctx, options, tmp_cc, &mcreds,
+ NULL, &s4u2self_creds);
+ if (code != 0) {
+ goto done;
+ }
+
+ if (s4u2proxy) {
+ code = krb5_parse_name(ctx, target_service, &target_princ);
+ if (code != 0) {
+ goto done;
+ }
+
+ mcreds.client = init_creds.client;
+ mcreds.server = target_princ;
+ mcreds.second_ticket = s4u2self_creds->ticket;
+
+ code = krb5_get_credentials(ctx, options |
+ KRB5_GC_CONSTRAINED_DELEGATION,
+ tmp_cc, &mcreds, &s4u2proxy_creds);
+ if (code != 0) {
+ goto done;
+ }
+
+ /* Check KDC support of S4U2Proxy extension */
+ if (!krb5_principal_compare(ctx, s4u2self_creds->client,
+ s4u2proxy_creds->client)) {
+ code = KRB5KDC_ERR_PADATA_TYPE_NOSUPP;
+ goto done;
+ }
+
+ store_creds = s4u2proxy_creds;
+ } else {
+ store_creds = s4u2self_creds;;
+
+ /* We need to save the ticket with the requested server name
+ * or the caller won't be able to find it in cache. */
+ if (!krb5_principal_compare(ctx, self_princ,
+ store_creds->server)) {
+ krb5_free_principal(ctx, store_creds->server);
+ store_creds->server = NULL;
+ code = krb5_copy_principal(ctx, self_princ,
+ &store_creds->server);
+ if (code != 0) {
+ goto done;
+ }
+ }
+ }
+
+ code = krb5_cc_initialize(ctx, store_cc, store_creds->client);
+ if (code != 0) {
+ goto done;
+ }
+
+ code = krb5_cc_store_cred(ctx, store_cc, store_creds);
+ if (code != 0) {
+ goto done;
+ }
+
+ if (expire_time) {
+ *expire_time = (time_t) store_creds->times.endtime;
+ }
+
+ if (kdc_time) {
+ *kdc_time = (time_t) store_creds->times.starttime;
+ }
+
+done:
+ krb5_cc_destroy(ctx, tmp_cc);
+ krb5_free_cred_contents(ctx, &init_creds);
+ krb5_free_creds(ctx, s4u2self_creds);
+ krb5_free_creds(ctx, s4u2proxy_creds);
+ krb5_free_principal(ctx, self_princ);
+ krb5_free_principal(ctx, target_princ);
+
+ return code;
+}
#endif
#if !defined(HAVE_KRB5_MAKE_PRINCIPAL) && defined(HAVE_KRB5_BUILD_PRINCIPAL_ALLOC_VA)
diff --git a/lib/krb5_wrap/krb5_samba.h b/lib/krb5_wrap/krb5_samba.h
index a66b7465530..c8573f52bd9 100644
--- a/lib/krb5_wrap/krb5_samba.h
+++ b/lib/krb5_wrap/krb5_samba.h
@@ -252,7 +252,6 @@ krb5_error_code smb_krb5_kinit_password_ccache(krb5_context ctx,
krb5_get_init_creds_opt *krb_options,
time_t *expire_time,
time_t *kdc_time);
-#ifdef SAMBA4_USES_HEIMDAL
krb5_error_code smb_krb5_kinit_s4u2_ccache(krb5_context ctx,
krb5_ccache store_cc,
krb5_principal init_principal,
@@ -263,7 +262,6 @@ krb5_error_code smb_krb5_kinit_s4u2_ccache(krb5_context ctx,
krb5_get_init_creds_opt *krb_options,
time_t *expire_time,
time_t *kdc_time);
-#endif
#if defined(HAVE_KRB5_MAKE_PRINCIPAL)
#define smb_krb5_make_principal krb5_make_principal
diff --git a/source4/auth/kerberos/kerberos_util.c b/source4/auth/kerberos/kerberos_util.c
index 544d9d853cc..c14d8c72d8c 100644
--- a/source4/auth/kerberos/kerberos_util.c
+++ b/source4/auth/kerberos/kerberos_util.c
@@ -234,9 +234,7 @@ done:
{
krb5_error_code ret;
const char *password;
-#ifdef SAMBA4_USES_HEIMDAL
const char *self_service;
-#endif
const char *target_service;
time_t kdc_time = 0;
krb5_principal princ;
@@ -268,9 +266,7 @@ done:
return ret;
}
-#ifdef SAMBA4_USES_HEIMDAL
self_service = cli_credentials_get_self_service(credentials);
-#endif
target_service = cli_credentials_get_target_service(credentials);
password = cli_credentials_get_password(credentials);
@@ -331,7 +327,6 @@ done:
#endif
if (password) {
if (impersonate_principal) {
-#ifdef SAMBA4_USES_HEIMDAL
ret = smb_krb5_kinit_s4u2_ccache(smb_krb5_context->krb5_context,
ccache,
princ,
@@ -342,12 +337,6 @@ done:
krb_options,
NULL,
&kdc_time);
-#else
- talloc_free(mem_ctx);
- (*error_string) = "INTERNAL error: s4u2 ops "
- "are not supported with MIT build yet";
- return EINVAL;
-#endif
} else {
ret = smb_krb5_kinit_password_ccache(smb_krb5_context->krb5_context,
ccache,
--
2.37.1
From a5713b1558192f24348f7794da84bf65cf78e6ec Mon Sep 17 00:00:00 2001
From: Isaac Boukris <iboukris@gmail.com>
Date: Sat, 19 Sep 2020 14:16:20 +0200
Subject: [PATCH 3/3] wip: for canonicalization with new MIT kdc code
---
source4/kdc/mit_samba.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/source4/kdc/mit_samba.c b/source4/kdc/mit_samba.c
index 03c2c2ea1de..30fade56531 100644
--- a/source4/kdc/mit_samba.c
+++ b/source4/kdc/mit_samba.c
@@ -232,6 +232,9 @@ int mit_samba_get_principal(struct mit_samba_context *ctx,
if (kflags & KRB5_KDB_FLAG_CANONICALIZE) {
sflags |= SDB_F_CANON;
}
+#if KRB5_KDB_API_VERSION >= 10
+ sflags |= SDB_F_FORCE_CANON;
+#endif
if (kflags & (KRB5_KDB_FLAG_CLIENT_REFERRALS_ONLY |
KRB5_KDB_FLAG_INCLUDE_PAC)) {
/*
--
2.37.1

7
samba.spec
View File

@ -138,7 +138,7 @@
%define samba_requires_eq() %(LC_ALL="C" echo '%*' | xargs -r rpm -q --qf 'Requires: %%{name} = %%{epoch}:%%{version}\\n' | sed -e 's/ (none):/ /' -e 's/ 0:/ /' | grep -v "is not")
%global samba_version 4.18.4
%global baserelease 101
%global baserelease 102
# This should be rc1 or %%nil
%global pre_release %nil
@ -234,6 +234,8 @@ Source17: samba-usershares-systemd-sysusers.conf
Source201: README.downgrade
Source202: samba.abignore
Patch0: samba-4.18-netlogon.patch
Requires(pre): /usr/sbin/groupadd
Requires(pre): %{name}-common = %{samba_depver}
@ -4328,6 +4330,9 @@ fi
%endif
%changelog
* Mon Jul 17 2023 Pavel Filipenský <pfilipen@redhat.com> - 4.18.4-102
- resolves: rhbz#2222883 - Fix trust relationship between workstation and DC
* Mon Jul 10 2023 Pavel Filipenský <pfilipen@redhat.com> - 4.18.4-101
- resolves: rhbz#2216712 - Fix broken symlink for libwbclient
- resolves: rhbz#2214327 - Fix segfault of winbind child when listing users with `winbind scan trusted domains = yes`