diff options
Diffstat (limited to 'fuzz/gnutls_x509_verify_fuzzer.c')
| -rw-r--r-- | fuzz/gnutls_x509_verify_fuzzer.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/fuzz/gnutls_x509_verify_fuzzer.c b/fuzz/gnutls_x509_verify_fuzzer.c new file mode 100644 index 0000000..3f945d5 --- /dev/null +++ b/fuzz/gnutls_x509_verify_fuzzer.c @@ -0,0 +1,212 @@ +/* + * Copyright (C) 2019 Red Hat, Inc. + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of GnuTLS. + * + * The GnuTLS is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/> + * + */ + +#include <assert.h> +#include <stdint.h> + +#include <gnutls/gnutls.h> +#include <gnutls/x509.h> +#include <stdio.h> +#include <stdlib.h> + +#include "fuzzer.h" + +unsigned char _ca_der[] = { + 0x30, 0x82, 0x05, 0xe2, 0x30, 0x82, 0x04, 0xca, 0xa0, 0x03, 0x02, 0x01, + 0x02, 0x02, 0x10, 0x27, 0x53, 0xf8, 0x06, 0xfe, 0x91, 0x37, 0x32, 0x2f, + 0x5b, 0x40, 0x9f, 0x1c, 0x31, 0x87, 0x5c, 0x30, 0x0d, 0x06, 0x09, 0x2a, + 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x05, 0x05, 0x00, 0x30, 0x81, + 0xca, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, + 0x55, 0x53, 0x31, 0x17, 0x30, 0x15, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, + 0x0e, 0x56, 0x65, 0x72, 0x69, 0x53, 0x69, 0x67, 0x6e, 0x2c, 0x20, 0x49, + 0x6e, 0x63, 0x2e, 0x31, 0x1f, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x04, 0x0b, + 0x13, 0x16, 0x56, 0x65, 0x72, 0x69, 0x53, 0x69, 0x67, 0x6e, 0x20, 0x54, + 0x72, 0x75, 0x73, 0x74, 0x20, 0x4e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b, + 0x31, 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0xf6, 0xb7, 0xd2, 0x8b, 0x84, 0xa0, 0x26, 0x6f, 0x8a, 0x4b, 0xc5, + 0xd8, 0xdc, 0x54, 0xee, 0xe2, 0x4a, 0x56, 0xaa, 0xbc, 0x72, 0xe5, 0x93, + 0xe6, 0x3f, 0xb6, 0xde, 0x6d, 0x6c, 0x7b, 0x25, 0x5b, 0x01, 0xec, 0x6f, + 0x29, 0x64, 0xb7, 0xf3, 0x2e, 0x23, 0xf6, 0x1f, 0xae, 0x11, 0x2d, 0xc6, + 0xba, 0xb9, 0xeb, 0x08, 0x60, 0xb1, 0x2d, 0x1b, 0x2b, 0x9e, 0xbe, 0x85, + 0x74, 0x0a, 0x1d, 0x2e, 0x2a, 0x52, 0x91, 0x18, 0x20, 0xd7, 0xc9, 0xb2, + 0x97, 0x84, 0x8f, 0x16, 0x2c, 0x32, 0xca, 0x18, 0x12, 0xaa, 0xc5, 0x20, + 0x59, 0xca, 0xfb, 0x6d, 0x37, 0x32, 0xe3, 0xc5, 0xa3, 0x84 +}; +unsigned int _ca_der_len = 1510; + +static time_t mytime(time_t * t) +{ + time_t then = 1553835274; + if (t) + *t = then; + + return then; +} + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + gnutls_datum_t raw; + gnutls_datum_t ca; + gnutls_x509_crt_t crt, ca_crt; + int ret; + unsigned status = 0; + + gnutls_global_set_time_function(mytime); + + raw.data = (unsigned char *)data; + raw.size = size; + + ca.data = _ca_der; + ca.size = _ca_der_len; + + ret = gnutls_x509_crt_init(&ca_crt); + assert(ret >= 0); + + ret = gnutls_x509_crt_init(&crt); + assert(ret >= 0); + + ret = gnutls_x509_crt_import(ca_crt, &ca, GNUTLS_X509_FMT_DER); + if (ret < 0) + goto fail; + + ret = gnutls_x509_crt_import(crt, &raw, GNUTLS_X509_FMT_DER); + if (ret < 0) + goto fail; + + ret = gnutls_x509_crt_list_verify(&crt, 1, &ca_crt, 1, NULL, 0, + GNUTLS_VERIFY_ALLOW_UNSORTED_CHAIN|GNUTLS_VERIFY_ALLOW_BROKEN| + GNUTLS_VERIFY_DISABLE_TRUSTED_TIME_CHECKS, + &status); + assert(ret < 0 || status != 0); + + fail: + gnutls_x509_crt_deinit(crt); + gnutls_x509_crt_deinit(ca_crt); + return 0; +} |