The Samba-Bugzilla – Attachment 17596 Details for
Bug 15197
Windows 11 22H2 and Samba-AD 4.15 Kerberos login issue
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[patch]
Patch for Samba 4.12 v3 (on top of maintained 4.12 backports tree)
samba-4.12-windows-11-22h2-kerberos-v3.patch (text/plain), 10.26 KB, created by
Jennifer Sutton
on 2022-10-21 03:06:33 UTC
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Description:
Patch for Samba 4.12 v3 (on top of maintained 4.12 backports tree)
Filename:
MIME Type:
Creator:
Jennifer Sutton
Created:
2022-10-21 03:06:33 UTC
Size:
10.26 KB
patch
obsolete
>From bf0214a46e3fd78dfff237e9a3c714bf725c9f7f Mon Sep 17 00:00:00 2001 >From: Joseph Sutton <josephsutton@catalyst.net.nz> >Date: Tue, 4 Oct 2022 12:25:08 +1300 >Subject: [PATCH 1/3] tests/krb5: Add test requesting a service ticket expiring > post-2038 > >Windows 11 22H2 performs such requests, with year 9999. >The test fails with KDC_ERR_BAD_INTEGRITY on older >Heimdal versions, which are unable to verify a checksum >over the modified request body (due to a re-encoding failure). > >REF: https://github.com/heimdal/heimdal/issues/1011 > >BUG: https://bugzilla.samba.org/show_bug.cgi?id=15197 > >[abartlet@samba.org Add knownfail for backport - as Samba > 4.15 and earlier fail this test, adapted commit > 67811e121fbef08337675d473390160793544719 to test > paraemters in 4.15] > >Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz> >Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> >(backported from commit 67811e121fbef08337675d473390160793544719) >--- > python/samba/tests/krb5/kdc_tgs_tests.py | 14 ++++++++++++++ > selftest/knownfail.d/windows11-22h2 | 2 ++ > 2 files changed, 16 insertions(+) > create mode 100644 selftest/knownfail.d/windows11-22h2 > >diff --git a/python/samba/tests/krb5/kdc_tgs_tests.py b/python/samba/tests/krb5/kdc_tgs_tests.py >index e52f46152fa..a4bc48e587a 100755 >--- a/python/samba/tests/krb5/kdc_tgs_tests.py >+++ b/python/samba/tests/krb5/kdc_tgs_tests.py >@@ -2099,6 +2099,18 @@ class KdcTgsTests(KDCBaseTest): > self._run_tgs(tgt, expected_error=(KDC_ERR_TGT_REVOKED, > KDC_ERR_C_PRINCIPAL_UNKNOWN)) > >+ # Test making a TGS request for a ticket expiring post-2038. >+ def test_tgs_req_future_till(self): >+ creds = self._get_creds() >+ tgt = self._get_tgt(creds) >+ >+ target_creds = self.get_service_creds() >+ self._tgs_req( >+ tgt=tgt, >+ expected_error=0, >+ target_creds=target_creds, >+ till='99990913024805Z') >+ > def _modify_renewable(self, enc_part): > # Set the renewable flag. > enc_part = self.modify_ticket_flag(enc_part, 'renewable', value=True) >@@ -2469,6 +2481,7 @@ class KdcTgsTests(KDCBaseTest): > sname=None, > srealm=None, > use_fast=False, >+ till=None, > expect_claims=True, > expect_pac=True, > expect_pac_attrs=None, >@@ -2580,6 +2593,7 @@ class KdcTgsTests(KDCBaseTest): > cname=None, > realm=srealm, > sname=sname, >+ till_time=till, > etypes=etypes, > additional_tickets=additional_tickets) > if expected_error: >diff --git a/selftest/knownfail.d/windows11-22h2 b/selftest/knownfail.d/windows11-22h2 >new file mode 100644 >index 00000000000..69980ce763a >--- /dev/null >+++ b/selftest/knownfail.d/windows11-22h2 >@@ -0,0 +1,2 @@ >+# This tests shows the new timestamp from Windows 11 22H2 which fails in this version >+^samba.tests.krb5.kdc_tgs_tests.samba.tests.krb5.kdc_tgs_tests.KdcTgsTests.test_tgs_req_future_till >\ No newline at end of file >-- >2.25.1 > > >From fb64e1d7b1be4ee66e6683a2342178a5d50812c4 Mon Sep 17 00:00:00 2001 >From: Joseph Sutton <josephsutton@catalyst.net.nz> >Date: Thu, 20 Oct 2022 12:36:44 +1300 >Subject: [PATCH 2/3] 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 > >(backported from commit 50cbdecf2e276e5f87b9c2d95fd3ca86d11a08e2) > >[abartlet@samba.org Adapted from 50cbdecf2e276e5f87b9c2d95fd3ca86d11a08e2 > as the kerberos tests have changed parameters in newer versions > breaking the context] >--- > python/samba/tests/krb5/as_req_tests.py | 13 +++++++++++-- > 1 file changed, 11 insertions(+), 2 deletions(-) > >diff --git a/python/samba/tests/krb5/as_req_tests.py b/python/samba/tests/krb5/as_req_tests.py >index 054a49b64aa..aa4bc2370c4 100755 >--- a/python/samba/tests/krb5/as_req_tests.py >+++ b/python/samba/tests/krb5/as_req_tests.py >@@ -42,7 +42,7 @@ global_hexdump = False > > class AsReqBaseTest(KDCBaseTest): > def _run_as_req_enc_timestamp(self, client_creds, sname=None, >- expected_error=None): >+ expected_error=None, till=None): > client_account = client_creds.get_username() > client_as_etypes = self.get_default_enctypes() > client_kvno = client_creds.get_kvno() >@@ -62,7 +62,8 @@ class AsReqBaseTest(KDCBaseTest): > expected_sname = sname > expected_salt = client_creds.get_salt() > >- till = self.get_KerberosTime(offset=36000) >+ if till is None: >+ till = self.get_KerberosTime(offset=36000) > > initial_etypes = client_as_etypes > initial_kdc_options = krb5_asn1.KDCOptions('forwardable') >@@ -241,6 +242,14 @@ class AsReqKerberosTests(AsReqBaseTest): > sname=wrong_krbtgt_princ, > expected_error=KDC_ERR_S_PRINCIPAL_UNKNOWN) > >+ # Test that we can make a request for a ticket expiring post-2038. >+ def test_future_till(self): >+ client_creds = self.get_client_creds() >+ >+ self._run_as_req_enc_timestamp( >+ client_creds, >+ till='99990913024805Z') >+ > > if __name__ == "__main__": > global_asn1_print = False >-- >2.25.1 > > >From 56c949d2764b69050bc441bec68008f4a046f1d3 Mon Sep 17 00:00:00 2001 >From: Luke Howard <lukeh@padl.com> >Date: Thu, 20 Oct 2022 13:27:31 +1300 >Subject: [PATCH 3/3] kdc: avoid re-encoding KDC-REQ-BODY > >Use --preserve-binary=KDC-REQ-BODY option to ASN.1 compiler to avoid >re-encoding KDC-REQ-BODYs for verification in GSS preauth, TGS and PKINIT. > >[abartlet@samba.org adapted from Heimdal commit > ebfd48e40a1b61bf5a6b8d00fe5c581e24652b6e > by removing references to FAST and GSS-pre-auth. > > This fixes the Windows 11 22H2 issue with TGS-REQ > as seen at https://github.com/heimdal/heimdal/issues/1011 and so > removes the knownfail file for this test] > >BUG: https://bugzilla.samba.org/show_bug.cgi?id=15197 > >Signed-off-by: Andrew Bartlett <abartlet@samba.org> >--- > selftest/knownfail.d/windows11-22h2 | 2 -- > source4/heimdal/kdc/krb5tgs.c | 24 ++---------------------- > source4/heimdal/kdc/pkinit.c | 16 ++-------------- > source4/heimdal/lib/asn1/krb5.opt | 1 + > 4 files changed, 5 insertions(+), 38 deletions(-) > delete mode 100644 selftest/knownfail.d/windows11-22h2 > >diff --git a/selftest/knownfail.d/windows11-22h2 b/selftest/knownfail.d/windows11-22h2 >deleted file mode 100644 >index 69980ce763a..00000000000 >--- a/selftest/knownfail.d/windows11-22h2 >+++ /dev/null >@@ -1,2 +0,0 @@ >-# This tests shows the new timestamp from Windows 11 22H2 which fails in this version >-^samba.tests.krb5.kdc_tgs_tests.samba.tests.krb5.kdc_tgs_tests.KdcTgsTests.test_tgs_req_future_till >\ No newline at end of file >diff --git a/source4/heimdal/kdc/krb5tgs.c b/source4/heimdal/kdc/krb5tgs.c >index 13996f96b4a..f1393fa87a1 100644 >--- a/source4/heimdal/kdc/krb5tgs.c >+++ b/source4/heimdal/kdc/krb5tgs.c >@@ -780,9 +780,6 @@ tgs_check_authenticator(krb5_context context, > krb5_keyblock *key) > { > krb5_authenticator auth; >- size_t len = 0; >- unsigned char *buf; >- size_t buf_size; > krb5_error_code ret; > krb5_crypto crypto; > >@@ -808,25 +805,9 @@ tgs_check_authenticator(krb5_context context, > goto out; > } > >- /* XXX should not re-encode this */ >- ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, b, &len, ret); >- if(ret){ >- const char *msg = krb5_get_error_message(context, ret); >- kdc_log(context, config, 0, "Failed to encode KDC-REQ-BODY: %s", msg); >- krb5_free_error_message(context, msg); >- goto out; >- } >- if(buf_size != len) { >- free(buf); >- kdc_log(context, config, 0, "Internal error in ASN.1 encoder"); >- *e_text = "KDC internal error"; >- ret = KRB5KRB_ERR_GENERIC; >- goto out; >- } > ret = krb5_crypto_init(context, key, 0, &crypto); > if (ret) { > const char *msg = krb5_get_error_message(context, ret); >- free(buf); > kdc_log(context, config, 0, "krb5_crypto_init failed: %s", msg); > krb5_free_error_message(context, msg); > goto out; >@@ -834,10 +815,9 @@ tgs_check_authenticator(krb5_context context, > ret = krb5_verify_checksum(context, > crypto, > KRB5_KU_TGS_REQ_AUTH_CKSUM, >- buf, >- len, >+ b->_save.data, >+ b->_save.length, > auth->cksum); >- free(buf); > krb5_crypto_destroy(context, crypto); > if(ret){ > const char *msg = krb5_get_error_message(context, ret); >diff --git a/source4/heimdal/kdc/pkinit.c b/source4/heimdal/kdc/pkinit.c >index ad7f3efc10a..64ea4c00e41 100644 >--- a/source4/heimdal/kdc/pkinit.c >+++ b/source4/heimdal/kdc/pkinit.c >@@ -113,10 +113,7 @@ pk_check_pkauthenticator(krb5_context context, > PKAuthenticator *a, > const KDC_REQ *req) > { >- u_char *buf = NULL; >- size_t buf_size; > krb5_error_code ret; >- size_t len = 0; > krb5_timestamp now; > Checksum checksum; > >@@ -128,22 +125,13 @@ pk_check_pkauthenticator(krb5_context context, > return KRB5KRB_AP_ERR_SKEW; > } > >- ASN1_MALLOC_ENCODE(KDC_REQ_BODY, buf, buf_size, &req->req_body, &len, ret); >- if (ret) { >- krb5_clear_error_message(context); >- return ret; >- } >- if (buf_size != len) >- krb5_abortx(context, "Internal error in ASN.1 encoder"); >- > ret = krb5_create_checksum(context, > NULL, > 0, > CKSUMTYPE_SHA1, >- buf, >- len, >+ req->req_body._save.data, >+ req->req_body._save.length, > &checksum); >- free(buf); > if (ret) { > krb5_clear_error_message(context); > return ret; >diff --git a/source4/heimdal/lib/asn1/krb5.opt b/source4/heimdal/lib/asn1/krb5.opt >index 1d6d5e8989f..5acc596d39c 100644 >--- a/source4/heimdal/lib/asn1/krb5.opt >+++ b/source4/heimdal/lib/asn1/krb5.opt >@@ -4,3 +4,4 @@ > --sequence=METHOD-DATA > --sequence=ETYPE-INFO > --sequence=ETYPE-INFO2 >+--preserve-binary=KDC-REQ-BODY >-- >2.25.1 >
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jsutton
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