Allow Cast certificates to have serial numbers greater than 20 bytes.

net/cert/internal/parse_certificate_fuzzer.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "net/cert/internal/certificate_policies.h"
 #include "net/cert/internal/extended_key_usage.h"
@@ skipping 21 matching lines @@
   der::Input tbs_certificate_tlv;
   der::Input signature_algorithm_tlv;
   der::BitString signature_value;
   if (!ParseCertificate(in, &tbs_certificate_tlv, &signature_algorithm_tlv,
                         &signature_value))
     return;
   std::unique_ptr<SignatureAlgorithm> sig_alg(
       SignatureAlgorithm::CreateFromDer(signature_algorithm_tlv));
 
   ParsedTbsCertificate tbs;
-  if (!ParseTbsCertificate(tbs_certificate_tlv, &tbs))
+  if (!ParseTbsCertificate(tbs_certificate_tlv, {}, &tbs))
     return;
 
-  ignore_result(VerifySerialNumber(tbs.serial_number));
   RDNSequence subject;
   ignore_result(ParseName(tbs.subject_tlv, &subject));
 
   std::map<der::Input, ParsedExtension> extensions;
   if (tbs.has_extensions && ParseExtensions(tbs.extensions_tlv, &extensions)) {
     ParsedExtension extension;
     ParsedBasicConstraints basic_constraints;
     der::BitString key_usage;
     std::vector<der::Input> policies;
     std::vector<der::Input> eku_oids;
@@ skipping 16 matching lines @@
 }
 
 }  // namespace
 }  // namespace net
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   net::der::Input in(data, size);
   net::ParseCertificateForFuzzer(in);
   return 0;
 }