b87b813fee
SANON cred export/import never worked correctly as the export function was producing the wrong form of token, which was leading gss_import_cred() to allocate more than 64MB of memory to parse the SANON exported credential. The recent change to reduce the default `max_alloc` of krb5_storage exposed this.
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
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* Copyright (c) 2019-2020, AuriStor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sanon_locl.h"
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OM_uint32 GSSAPI_CALLCONV
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_gss_sanon_export_cred(OM_uint32 *minor,
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gss_cred_id_t input_cred,
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gss_buffer_t token)
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{
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gss_buffer_desc buf;
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krb5_storage *sp;
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krb5_data data_out, data;
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OM_uint32 major, junk;
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token->value = NULL;
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token->length = 0;
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major = _gss_sanon_export_name(minor, (gss_name_t)input_cred, &buf);
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if (major)
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return major;
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sp = krb5_storage_emem();
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if (sp == NULL) {
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gss_release_buffer(&junk, &buf);
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*minor = ENOMEM;
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return GSS_S_FAILURE;
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}
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major = _gss_mg_store_oid(minor, sp, GSS_SANON_X25519_MECHANISM);
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if (major) {
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gss_release_buffer(&junk, &buf);
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krb5_storage_free(sp);
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return major;
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}
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data_out.length = 0;
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data_out.data = NULL;
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data.length = buf.length;
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data.data = buf.value;
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*minor = krb5_store_data(sp, data);
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if (*minor == 0)
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*minor = krb5_storage_to_data(sp, &data_out);
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if (*minor == 0) {
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token->value = data_out.data;
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token->length = data_out.length;
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}
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gss_release_buffer(&junk, &buf);
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krb5_storage_free(sp);
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return major;
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}
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