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CVE-2022-37966 tests/krb5: Add test requesting a TGT expiring post-2038

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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 50cbdecf2e)

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This commit is contained in:
Joseph Sutton 2022-10-20 12:36:44 +13:00 committed by Stefan Metzmacher
parent 397a390aa8
commit a65fc1fa47
1 changed files with 11 additions and 2 deletions
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13
python/samba/tests/krb5/as_req_tests.py
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@ -47,7 +47,7 @@ class AsReqBaseTest(KDCBaseTest):
expected_cname=None, sname=None,
name_type=NT_PRINCIPAL, etypes=None,
expected_error=None, expect_edata=None,
kdc_options=None):
kdc_options=None, till=None):
user_name = client_creds.get_username()
if client_account is None:
client_account = user_name
@ -71,7 +71,8 @@ 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)
if etypes is None:
etypes = client_as_etypes
@ -516,6 +517,14 @@ 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