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fuzz: add fuzzer for sess_crypt_blob

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Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Douglas Bagnall 2020-12-18 17:56:29 +13:00 committed by Andrew Bartlett
parent f404ef3c2a
commit 019bee54c6
2 changed files with 60 additions and 0 deletions
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55
lib/fuzzing/fuzz_sess_crypt_blob.c Normal file
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@ -0,0 +1,55 @@
/*
Fuzzing sess_*crypt_blob
Copyright (C) Catalyst IT 2020
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 "fuzzing/fuzzing.h"
#include "libcli/auth/libcli_auth.h"
#include "session.h"
int LLVMFuzzerInitialize(int *argc, char ***argv)
{
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *input, size_t len)
{
TALLOC_CTX *mem_ctx = NULL;
DATA_BLOB blob, session_key, out;
size_t slen;
if (len < 1) {
return 0;
}
slen = input[0];
if (len < slen + 1) {
return 0;
}
session_key.data = input + 1;
session_key.length = slen;
blob.data = input + 1 + slen;
blob.length = len - slen - 1;
mem_ctx = talloc_new(NULL);
out = sess_encrypt_blob(mem_ctx, &blob, &session_key);
sess_decrypt_blob(mem_ctx, &blob, &session_key, &out);
TALLOC_FREE(mem_ctx);
return 0;
}

5
lib/fuzzing/wscript_build
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@ -37,6 +37,11 @@ bld.SAMBA_BINARY('fuzz_sddl_parse',
deps='fuzzing samba-security afl-fuzz-main', deps='fuzzing samba-security afl-fuzz-main',
fuzzer=True) fuzzer=True)
bld.SAMBA_BINARY('fuzz_sess_crypt_blob',
source='fuzz_sess_crypt_blob.c',
deps='fuzzing samba-security LIBCLI_AUTH NDR_DSSETUP afl-fuzz-main',
fuzzer=True)
bld.SAMBA_BINARY('fuzz_nmblib_parse_packet', bld.SAMBA_BINARY('fuzz_nmblib_parse_packet',
source='fuzz_nmblib_parse_packet.c', source='fuzz_nmblib_parse_packet.c',
deps='fuzzing libsmb afl-fuzz-main', deps='fuzzing libsmb afl-fuzz-main',