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samba-mirror/auth/auth_util.c
Joseph Sutton 9895018b64 CVE-2022-2031 auth: Add ticket type field to auth_user_info_dc and auth_session_info
This field may be used to convey whether we were provided with a TGT or
a non-TGT. We ensure both structures are zeroed out to avoid incorrect
results being produced by an uninitialised field.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
2022-07-24 09:23:56 +02:00

72 lines
1.9 KiB
C

/*
Unix SMB/CIFS implementation.
Authentication utility functions
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2017
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "librpc/ndr/libndr.h"
#include "librpc/gen_ndr/ndr_auth.h"
#include "auth_util.h"
struct auth_session_info *copy_session_info(TALLOC_CTX *mem_ctx,
const struct auth_session_info *src)
{
TALLOC_CTX *frame = talloc_stackframe();
struct auth_session_info *dst;
DATA_BLOB blob;
enum ndr_err_code ndr_err;
ndr_err = ndr_push_struct_blob(
&blob,
frame,
src,
(ndr_push_flags_fn_t)ndr_push_auth_session_info);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
DBG_ERR("copy_session_info(): ndr_push_auth_session_info "
"failed: %s\n",
ndr_errstr(ndr_err));
TALLOC_FREE(frame);
return NULL;
}
dst = talloc_zero(mem_ctx, struct auth_session_info);
if (dst == NULL) {
DBG_ERR("talloc failed\n");
TALLOC_FREE(frame);
return NULL;
}
ndr_err = ndr_pull_struct_blob(
&blob,
dst,
dst,
(ndr_pull_flags_fn_t)ndr_pull_auth_session_info);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
DBG_ERR("copy_session_info(): ndr_pull_auth_session_info "
"failed: %s\n",
ndr_errstr(ndr_err));
TALLOC_FREE(dst);
TALLOC_FREE(frame);
return NULL;
}
TALLOC_FREE(frame);
return dst;
}