diff --git a/sources.json b/sources.json index a5ea93ed0..8fcf85300 100644 --- a/sources.json +++ b/sources.json @@ -885,6 +885,7 @@ "src/fuzz/cert.cc", "src/fuzz/client.cc", "src/fuzz/decode_client_hello_inner.cc", + "src/fuzz/der_roundtrip.cc", "src/fuzz/dtls_client.cc", "src/fuzz/dtls_server.cc", "src/fuzz/pkcs12.cc", diff --git a/src/crypto/fipsmodule/ec/ec_key.c b/src/crypto/fipsmodule/ec/ec_key.c index 8b89dc26e..e676e3c05 100644 --- a/src/crypto/fipsmodule/ec/ec_key.c +++ b/src/crypto/fipsmodule/ec/ec_key.c @@ -79,6 +79,7 @@ #include "internal.h" #include "../delocate.h" +#include "../service_indicator/internal.h" #include "../../internal.h" diff --git a/src/crypto/fipsmodule/ecdsa/ecdsa.c b/src/crypto/fipsmodule/ecdsa/ecdsa.c index ef77e42a8..b92f8b247 100644 --- a/src/crypto/fipsmodule/ecdsa/ecdsa.c +++ b/src/crypto/fipsmodule/ecdsa/ecdsa.c @@ -64,6 +64,7 @@ #include "../../internal.h" #include "../bn/internal.h" #include "../ec/internal.h" +#include "../service_indicator/internal.h" #include "internal.h" diff --git a/src/crypto/fipsmodule/service_indicator/service_indicator.c b/src/crypto/fipsmodule/service_indicator/service_indicator.c index eb4669bb9..febe53448 100644 --- a/src/crypto/fipsmodule/service_indicator/service_indicator.c +++ b/src/crypto/fipsmodule/service_indicator/service_indicator.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include diff --git a/src/fuzz/CMakeLists.txt b/src/fuzz/CMakeLists.txt index 62652cb8b..51da4a80a 100644 --- a/src/fuzz/CMakeLists.txt +++ b/src/fuzz/CMakeLists.txt @@ -30,3 +30,4 @@ fuzzer(dtls_client ssl) fuzzer(ssl_ctx_api ssl) fuzzer(session ssl) fuzzer(decode_client_hello_inner ssl) +fuzzer(der_roundtrip) diff --git a/src/fuzz/der_roundtrip.cc b/src/fuzz/der_roundtrip.cc new file mode 100644 index 000000000..b88a7d645 --- /dev/null +++ b/src/fuzz/der_roundtrip.cc @@ -0,0 +1,57 @@ +/* Copyright (c) 2022, Google Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#include +#include + +#include +#include +#include + + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) { + CBS cbs, body; + unsigned tag; + CBS_init(&cbs, buf, len); + if (CBS_get_any_asn1(&cbs, &body, &tag)) { + // DER has a unique encoding, so any parsed input should round-trip + // correctly. + size_t consumed = len - CBS_len(&cbs); + bssl::ScopedCBB cbb; + CBB body_cbb; + if (!CBB_init(cbb.get(), consumed) || + !CBB_add_asn1(cbb.get(), &body_cbb, tag) || + !CBB_add_bytes(&body_cbb, CBS_data(&body), CBS_len(&body)) || + !CBB_flush(cbb.get()) || + CBB_len(cbb.get()) != consumed || + memcmp(CBB_data(cbb.get()), buf, consumed) != 0) { + abort(); + } + } + + ECDSA_SIG *sig = ECDSA_SIG_from_bytes(buf, len); + if (sig != NULL) { + uint8_t *enc; + size_t enc_len; + if (!ECDSA_SIG_to_bytes(&enc, &enc_len, sig) || + enc_len != len || + memcmp(buf, enc, len) != 0) { + abort(); + } + OPENSSL_free(enc); + ECDSA_SIG_free(sig); + } + + return 0; +} diff --git a/src/fuzz/der_roundtrip_corpus/0461791e54b4840c109637952eab43d9b938cab8 b/src/fuzz/der_roundtrip_corpus/0461791e54b4840c109637952eab43d9b938cab8 new file mode 100644 index 000000000..0286405d5 Binary files /dev/null and b/src/fuzz/der_roundtrip_corpus/0461791e54b4840c109637952eab43d9b938cab8 differ diff --git a/src/fuzz/der_roundtrip_corpus/06e57a7b98a403a00822739739924b97ae6c74e9 b/src/fuzz/der_roundtrip_corpus/06e57a7b98a403a00822739739924b97ae6c74e9 new file mode 100644 index 000000000..411154e33 Binary files /dev/null and b/src/fuzz/der_roundtrip_corpus/06e57a7b98a403a00822739739924b97ae6c74e9 differ diff --git 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