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feat: add null hostkey for server

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fix: skip gssapi tests in fips mode

fix: skip gssapi_key_exchange_null test on ubuntu and tumbleweed

fix: return early when rc != 0 to show error

tests: replace int asserts by ssh return code asserts

fix: add fatal error when hostkeys are not found and gssapi kex is not enabled

ci: add comment linking gssapi null kex bug in ubuntu and tumbleweed

fix: don't specify hostkeys in config instead of deleting files

tests: assert kex method was null

refactor: remove redundant include

refactor: better error message

fix: check null before accessing in gssapi.c

fix: allow setting no hostkeys
Signed-off-by: Gauravsingh Sisodia <xaerru@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Gauravsingh Sisodia
2024-08-29 14:03:12 +00:00
committed by Jakub Jelen
parent fd1c3e8878
commit c1aab9903f
21 changed files with 579 additions and 117 deletions
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44
tests/client/torture_gssapi_key_exchange_null.c
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@@ -19,21 +19,23 @@ sshd_setup(void **state)
s = *state;
s->disable_hostkeys = true;
/* Temporary kerberos server */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
if (!ssh_fips_mode()) {
/* Temporary kerberos server */
torture_setup_kdc_server(
state,
"kadmin.local addprinc -randkey host/server.libssh.site \n"
"kadmin.local ktadd -k $(dirname $0)/d/ssh.keytab host/server.libssh.site \n"
"kadmin.local addprinc -pw bar alice \n"
"kadmin.local list_principals",
"echo bar | kinit alice");
"echo bar | kinit alice");
torture_update_sshd_config(state,
"GSSAPIAuthentication yes\n"
"GSSAPIKeyExchange yes\n");
torture_update_sshd_config(state,
"GSSAPIAuthentication yes\n"
"GSSAPIKeyExchange yes\n");
torture_teardown_kdc_server(state);
torture_teardown_kdc_server(state);
}
return 0;
}
@@ -98,6 +100,11 @@ torture_gssapi_key_exchange_null(void **state)
int rc;
bool t = true;
/* Skip test if in FIPS mode */
if (ssh_fips_mode()) {
skip();
}
/* Valid */
torture_setup_kdc_server(
state,
@@ -112,7 +119,10 @@ torture_gssapi_key_exchange_null(void **state)
assert_ssh_return_code(s->ssh.session, rc);
rc = ssh_connect(session);
assert_int_equal(rc, 0);
assert_ssh_return_code(s->ssh.session, rc);
assert_string_equal(session->current_crypto->kex_methods[SSH_HOSTKEYS], "null");
torture_teardown_kdc_server(state);
}
@@ -132,5 +142,11 @@ torture_run_tests(void)
rc = cmocka_run_group_tests(tests, sshd_setup, sshd_teardown);
ssh_finalize();
pthread_exit((void *)&rc);
/* pthread_exit() won't return anything so error should be returned prior */
if (rc != 0) {
return rc;
}
/* Required for freeing memory allocated by GSSAPI */
pthread_exit(NULL);
}