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136 lines
4.5 KiB
136 lines
4.5 KiB
/*
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* Fuzz target for cl_load()
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*
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* Copyright (C) 2018-2019 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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* Authors: Micah Snyder
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, 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 OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "clamav.h"
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void clamav_message_callback(enum cl_msg severity, const char* fullmsg,
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const char* msg, void* context)
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{
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}
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class ClamAVState
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{
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public:
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ClamAVState()
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{
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// Silence all the log messages, none of them are meaningful.
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cl_set_clcb_msg(clamav_message_callback);
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cl_init(CL_INIT_DEFAULT);
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engine = cl_engine_new();
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cl_engine_compile(engine);
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tmp_db_name = NULL;
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}
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~ClamAVState()
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{
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cl_engine_free(engine);
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if (NULL != tmp_db_name) {
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unlink(tmp_db_name);
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}
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}
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struct cl_engine* engine;
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const char* tmp_db_name;
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};
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// Global with static initializer to setup an engine so we don't need to do
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// that on each execution.
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ClamAVState kClamAVState;
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
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{
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unsigned int sigs = 0;
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FILE* fuzzdb = NULL;
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unsigned int dboptions =
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CL_DB_PHISHING | CL_DB_PHISHING_URLS |
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CL_DB_BYTECODE | CL_DB_BYTECODE_UNSIGNED |
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CL_DB_PUA | CL_DB_ENHANCED;
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#if defined(CLAMAV_FUZZ_CDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.cdb";
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#elif defined(CLAMAV_FUZZ_CFG)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.cfg";
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#elif defined(CLAMAV_FUZZ_CRB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.crb";
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#elif defined(CLAMAV_FUZZ_FP)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.fp";
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#elif defined(CLAMAV_FUZZ_FTM)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.ftm";
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#elif defined(CLAMAV_FUZZ_HDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.hdb";
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#elif defined(CLAMAV_FUZZ_HSB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.hsb";
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#elif defined(CLAMAV_FUZZ_IDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.idb";
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#elif defined(CLAMAV_FUZZ_IGN)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.ign";
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#elif defined(CLAMAV_FUZZ_IGN2)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.ign2";
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#elif defined(CLAMAV_FUZZ_LDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.ldb";
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#elif defined(CLAMAV_FUZZ_MDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.mdb";
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#elif defined(CLAMAV_FUZZ_MSB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.msb";
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#elif defined(CLAMAV_FUZZ_NDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.ndb";
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#elif defined(CLAMAV_FUZZ_PDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.pdb";
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#elif defined(CLAMAV_FUZZ_WDB)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.wdb";
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#elif defined(CLAMAV_FUZZ_YARA)
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz.yara";
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#else
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kClamAVState.tmp_db_name = "dbload_tmp_fuzz";
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#endif
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fuzzdb = fopen(kClamAVState.tmp_db_name, "w");
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fwrite(data, size, 1, fuzzdb);
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fclose(fuzzdb);
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cl_load(
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kClamAVState.tmp_db_name,
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kClamAVState.engine,
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&sigs,
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dboptions);
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return 0;
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}
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