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mirror of https://github.com/samba-team/samba.git synced 2025-01-20 14:03:59 +03:00

129108 Commits

Author SHA1 Message Date
Joseph Sutton
f29efb011f CVE-2022-37966 selftest: Add tests for Kerberos session key behaviour since ENC_HMAC_SHA1_96_AES256_SK was added
ENC_HMAC_SHA1_96_AES256_SK is a flag introduced for by Microsoft in this CVE
to indicate that additionally, AES session keys are available.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

(similar to commit 371d7e63fcb966ab54915a3dedb888d48adbf0c0)
[jsutton@samba.org Removed unneeded fast_tests.py change, added
 non_etype_bits in raw_testcase.py, fixed conflicts in knownfails and
 tests.py]

[jsutton@samba.org Fixed conflicts in tests and knownfails]
2022-12-14 10:28:16 +00:00
Joseph Sutton
71fcd5366a CVE-2022-37966 samba-tool: Declare explicitly RC4 support of trust objects
As we will assume, as part of the fixes for CVE-2022-37966, that trust
objects with no msDS-SupportedEncryptionTypes attribute support AES
keys, RC4 support must now be explicitly indicated.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 086646865eef247a54897f5542495a2105563a5e)
2022-12-14 10:28:16 +00:00
Joseph Sutton
b899650938 CVE-2022-37966 samba-tool: Fix 'domain trust create' documentation
This option does the opposite of what the documentation claims.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 6b155b22e6afa52ce29cc475840c1d745b0f1f5e)
2022-12-14 10:28:16 +00:00
Joseph Sutton
31543f2902 CVE-2022-37966 third_party/heimdal: Fix error message typo
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit d6b3d68efc296190a133b4e38137bdfde39257f4)
2022-12-14 10:28:16 +00:00
Andrew Bartlett
545c20fd32 CVE-2022-37966 param: Add support for new option "kdc force enable rc4 weak session keys"
Pair-Programmed-With: Joseph Sutton <josephsutton@catalyst.net.nz>

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit ee18bc29b8ef6a3f09070507cc585467e55a1628)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
2022-12-14 10:28:16 +00:00
Joseph Sutton
4c2dc48598 CVE-2022-37966 param: Add support for new option "kdc default domain supportedenctypes"
This matches the Windows registry key

HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\KDC\DefaultDomainSupportedEncTypes

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit d861d4eb28bd4c091955c11669edcf867b093a6f)

[jsutton@samba.org Fixed header include conflict]
2022-12-14 10:28:16 +00:00
Joseph Sutton
0601bb94c6 CVE-2022-37967 Add new PAC checksum
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15231

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

(similar to commit a50a2be622afaa7a280312ea12f5eb9c9a0c41da)
[jsutton@samba.org Fixed conflicts in krb5pac.idl and raw_testcase.py]

[jsutton@samba.org Fixed conflicts in kdc_base_test.py, raw_testcase.py,
 knownfails, tests.py. Adapted KDC PAC changes to older function.]
2022-12-14 10:28:16 +00:00
Andrew Bartlett
a9c836d044 CVE-2022-37966 HEIMDAL: Look up the server keys to combine with clients etype list to select a session key
We need to select server, not client, to compare client etypes against.

(It is not useful to compare the client-supplied encryption types with
the client's own long-term keys.)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

(similar to commit 538315a2aa6d03b7639b49eb1576efa8755fefec)
[jsutton@samba.org Fixed knownfail conflicts]

[jsutton@samba.org Fixed knownfail conflicts]
2022-12-14 10:28:16 +00:00
Joseph Sutton
8d208ab061 CVE-2022-37966 tests/krb5: Add a test requesting tickets with various encryption types
The KDC should leave the choice of ticket encryption type up to the
target service, and admit no influence from the client.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

(similar to commit 177334c04230d0ad74bfc2b6825ffbebd5afb9af)
[jsutton@samba.org Fixed conflicts in usage.py, knownfails, tests.py]

[jsutton@samba.org Fixed knownfail conflicts]
2022-12-14 10:28:16 +00:00
Joseph Sutton
9ed5a352ca CVE-2022-37966 tests/krb5: Add 'etypes' parameter to _tgs_req()
This lets us select the encryption types we claim to support in the
request body.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

(similar to commit e0a91dddc4a6c70d7425c2c6836dcf2dd6d9a2de)
[jsutton@samba.org Adapted to 4.17 version of function taking different
 parameters]
2022-12-14 10:28:16 +00:00
Joseph Sutton
cc2bea27a6 CVE-2022-37966 tests/krb5: Split out _tgs_req() into base class
We will use it for testing our handling of encryption types.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

(similar to commit 50e075d2db21e9f23d686684ea3df9454b6b560e)
[jsutton@samba.org Adapted to 4.17 version of function]
2022-12-14 10:28:16 +00:00
Andrew Bartlett
2408d405d3 CVE-2022-37966 selftest: Allow krb5 tests to run against an IP by using the target_hostname binding string
This makes it easier to test against a server that is not accessible via DNS.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit c7cd6889177e8c705bb637172a60a5cf26734a3f)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
91b74c701a CVE-2022-37966 libcli/auth: let netlogon_creds_cli_warn_options() about "kerberos encryption types=legacy"
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 0248907e34945153ff2be62dc11d75c956a05932)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
12e4e94853 CVE-2022-37966 testparm: warn about 'kerberos encryption types = legacy'
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit c0c25cc0217b082c12330a8c47869c8428a20d0c)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
05206c0923 CVE-2022-37966 docs-xml/smbdotconf: "kerberos encryption types = legacy" should not be used
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit a4f6f51cbed53775cdfedc7eec2f28c7beb875cc)
2022-12-14 10:28:16 +00:00
Joseph Sutton
a65fc1fa47 CVE-2022-37966 tests/krb5: Add test requesting a TGT expiring post-2038
This demonstrates the behaviour of Windows 11 22H2 over Kerberos,
which changed to use a year 9999 date for a forever timetime in
tickets.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15197

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Thu Oct 20 05:00:23 UTC 2022 on sn-devel-184

(cherry picked from commit 50cbdecf2e276e5f87b9c2d95fd3ca86d11a08e2)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Andreas Schneider
397a390aa8 CVE-2022-37966 s3:utils: Fix old-style function definition
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit b787692b5e915031d4653bf375995320ed1aca07)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Andreas Schneider
a89385f2ab CVE-2022-37966 s3:client: Fix old-style function definition
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 81f4335dfb847c041bfd3d6110fc8f1d5741d41f)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Andreas Schneider
130c4877b3 CVE-2022-37966 s3:param: Fix old-style function definition
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 80dc3bc2b80634ab7c6c71fa1f9b94f0216322b2)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Joseph Sutton
0fee9c469c CVE-2022-37966 tests/krb5: Allow passing expected etypes to get_keys()
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 2f17cbf3b295663a91e4facb0dc8f09ef4a77f4a)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

[jsutton@samba.org Removed changes to protected_users_tests.py]
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Andrew Bartlett
3dec660ae2 CVE-2022-37966 s4:kdc: Move supported enc-type handling out of samba_kdc_message2entry_keys()
By putting this in the caller we potentially allow samba_kdc_message2entry_keys()
to be reused by a non-KDC caller.

Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
(cherry picked from commit 29eb7e2488e2c55ceacb859a57836a08cbb7f8e8)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

[jsutton@samba.org Adapted to older code without support for Protected
 Users or older keys; kept still-needed 'kdc_db_ctx'
 samba_kdc_message2entry_keys() parameter]
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
c09df344f0 CVE-2022-38023 testparm: warn about unsecure schannel related options
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 4d540473c3d43d048a30dd63efaeae9ff87b2aeb)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
587ff282a9 CVE-2022-38023 testparm: warn about server/client schannel != yes
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit f964c0c357214637f80d0089723b9b11d1b38f7e)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
03730459fe CVE-2022-38023 s4:rpc_server/netlogon: implement "server schannel require seal[:COMPUTERACCOUNT]"
By default we'll now require schannel connections with
privacy/sealing/encryption.

But we allow exceptions for specific computer/trust accounts.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit b3ed90a0541a271a7c6d4bee1201fa47adc3c0c1)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
1d9c939eba CVE-2022-38023 s4:rpc_server/netlogon: add a per connection cache to dcesrv_netr_check_schannel()
It's enough to warn the admin once per connection.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 3c57608e1109c1d6e8bb8fbad2ef0b5d79d00e1a)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
d04da3d700 CVE-2022-38023 docs-xml/smbdotconf: add "server schannel require seal[:COMPUTERACCOUNT]" options
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 7732a4b0bde1d9f98a0371f17d22648495329470)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
9f809e2dd3 CVE-2022-38023 s4:rpc_server/netlogon: make sure all dcesrv_netr_LogonSamLogon*() calls go through dcesrv_netr_check_schannel()
We'll soon add some additional contraints in dcesrv_netr_check_schannel(),
which are also required for dcesrv_netr_LogonSamLogonEx().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 689507457f5e6666488732f91a355a2183fb1662)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
abba8c4579 CVE-2022-38023 s4:rpc_server/netlogon: split out dcesrv_netr_check_schannel() function
This will allow us to reuse the function in other places.
As it will also get some additional checks soon.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit f43dc4f0bd60d4e127b714565147f82435aa4f07)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
3f7cd285b7 CVE-2022-38023 selftest:Samba4: avoid global 'allow nt4 crypto = yes' and 'reject md5 clients = no'
Instead of using the generic deprecated option use the specific
allow nt4 crypto:COMPUTERACCOUNT = yes and
server reject md5 schannel:COMPUTERACCOUNT = no
in order to allow legacy tests for pass.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 7ae3735810c2db32fa50f309f8af3c76ffa29768)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
729e905776 CVE-2022-38023 s4:rpc_server/netlogon: debug 'reject md5 servers' and 'allow nt4 crypto' misconfigurations
This allows the admin to notice what's wrong in order to adjust the
configuration if required.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 43df4be35950f491864ae8ada05d51b42a556381)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
80d0238679 CVE-2022-38023 docs-xml/smbdotconf: document "server reject md5 schannel:COMPUTERACCOUNT"
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 2ad302b42254e3c2800aaf11669fe2e6d55fa8a1)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
3075f65e5d CVE-2022-38023 docs-xml/smbdotconf: document "allow nt4 crypto:COMPUTERACCOUNT = no"
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit bd429d025981b445bf63935063e8e302bfab3f9b)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
d2dc3622d4 CVE-2022-38023 s4:rpc_server/netlogon: add 'server reject md5 schannel:COMPUTERACCOUNT = no' and 'allow nt4 crypto:COMPUTERACCOUNT = yes'
This makes it more flexible when we change the global default to
'reject md5 servers = yes'.

'allow nt4 crypto = no' is already the default.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 69b36541606d7064de9648cd54b35adfdf8f0e8f)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
c25546926f CVE-2022-38023 s4:rpc_server/netlogon: defer downgrade check until we found the account in our SAM
We'll soon make it possible to use 'reject md5 servers:CLIENTACCOUNT$ = no',
which means we'll need use the account name from our SAM.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit b09f51eefc311bbb1525efd1dc7b9a837f7ec3c2)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
bc78864cb5 CVE-2022-38023 docs-xml/smbdotconf: change 'reject md5 clients' default to yes
AES is supported by Windows Server >= 2008R2, Windows (Client) >= 7 and Samba >= 4.0,
so there's no reason to allow md5 clients by default.
However some third party domain members may need it.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit c8e53394b98b128ed460a6111faf05dfbad980d1)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
852763adc2 CVE-2022-38023 s4:rpc_server/netlogon: require aes if weak crypto is disabled
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 4c7f84798acd1e3218209d66d1a92e9f42954d51)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
35ff122101 CVE-2022-38023 s4:rpc_server/netlogon: split out dcesrv_netr_ServerAuthenticate3_check_downgrade()
We'll soon make it possible to use 'reject md5 servers:CLIENTACCOUNT$ = no',
which means we'll need the downgrade detection in more places.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit b6339fd1dcbe903e73efeea074ab0bd04ef83561)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
3f4c9c13b1 CVE-2022-38023 s4:torture: use NETLOGON_NEG_SUPPORTS_AES by default
For generic tests we should use the best available features.

And AES will be required by default soon.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit cfd55a22cda113fbb2bfa373b54091dde1ea6e66)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
066dafb07a CVE-2022-38023 selftest:Samba4: avoid global 'server schannel = auto'
Instead of using the generic deprecated option use the specific
server require schannel:COMPUTERACCOUNT = no in order to allow
legacy tests for pass.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 63c96ea6c02981795e67336401143f2a8836992c)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
82af786a36 CVE-2022-38023 s4:rpc_server/netlogon: improve CVE-2020-1472(ZeroLogon) debug messages
In order to avoid generating useless debug messages during make test,
we will use 'CVE_2020_1472:warn_about_unused_debug_level = 3'
and 'CVE_2020_1472:error_debug_level = 2' in order to avoid schannel warnings.

Review with: git show -w

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 16ee03efc194d9c1c2c746f63236b977a419918d)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
88018634c7 CVE-2022-38023 s4:rpc_server/netlogon: re-order checking in dcesrv_netr_creds_server_step_check()
This will simplify the following changes.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit ec62151a2fb49ecbeaa3bf924f49a956832b735e)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
0c32166174 CVE-2022-38023 s4:rpc_server/netlogon: add talloc_stackframe() to dcesrv_netr_creds_server_step_check()
This will simplify the following changes.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 0e6a2ba83ef1be3c6a0f5514c21395121621a145)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
a5996700ad CVE-2022-38023 s4:rpc_server/netlogon: add a lp_ctx variable to dcesrv_netr_creds_server_step_check()
This will simplify the following changes.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 7baabbe9819cd5a2714e7ea4e57a0c23062c0150)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
2139565c2f CVE-2022-38023 s4:rpc_server/netlogon: 'server schannel != yes' warning to dcesrv_interface_netlogon_bind
This will simplify the following changes.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit e060ea5b3edbe3cba492062c9605f88fae212ee0)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
08e2a93393 CVE-2022-38023 docs-xml/smbdotconf: change 'reject md5 servers' default to yes
AES is supported by Windows >= 2008R2 and Samba >= 4.0 so there's no
reason to allow md5 servers by default.

Note the change in netlogon_creds_cli_context_global() is only cosmetic,
but avoids confusion while reading the code. Check with:

 git show -U35 libcli/auth/netlogon_creds_cli.c

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 1c6c1129905d0c7a60018e7bf0f17a0fd198a584)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
a2388a06cb CVE-2022-38023 s3:winbindd: also allow per domain "winbind sealed pipes:DOMAIN" and "require strong key:DOMAIN"
This avoids advising insecure defaults for the global options.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit d60828f6391307a59abaa02b72b6a8acf66b2fef)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
8a7df0920b CVE-2022-38023 s3:net: add and use net_warn_member_options() helper
This makes sure domain member related 'net' commands print warnings
about unsecure smb.conf options.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 1fdf1d55a5dd550bdb16d037b5dc995c33c1a67a)
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
1fe8857b4d CVE-2022-38023 libcli/auth: add/use netlogon_creds_cli_warn_options()
This warns the admin about insecure options

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

(similar to commit 7e7adf86e59e8a673fbe87de46cef0d62221e800)
[jsutton@samba.org Replaced call to tevent_cached_getpid() with one to
 getpid()]
2022-12-14 10:28:16 +00:00
Stefan Metzmacher
b0dbc39551 CVE-2022-38023 libcli/auth: pass lp_ctx to netlogon_creds_cli_set_global_db()
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit 992f39a2c8a58301ceeb965f401e29cd64c5a209)
2022-12-14 10:28:16 +00:00
Ralph Boehme
421398ce5e CVE-2022-38023 docs-xml: improve wording for several options: "yields precedence" -> "is over-riden"
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(cherry picked from commit 830e865ba5648f6520bc552ffd71b61f754b8251)
2022-12-14 10:28:16 +00:00