diff --git a/ap/lib/libssl/openssl-1.1.1o/fuzz/asn1parse.c b/ap/lib/libssl/openssl-1.1.1o/fuzz/asn1parse.c
new file mode 100644
index 0000000..cf5ef72
--- /dev/null
+++ b/ap/lib/libssl/openssl-1.1.1o/fuzz/asn1parse.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
+ */
+
+/*
+ * Fuzz the parser used for dumping ASN.1 using "openssl asn1parse".
+ */
+
+#include <stdio.h>
+#include <openssl/asn1.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/err.h>
+#include "fuzzer.h"
+
+static BIO *bio_out;
+
+int FuzzerInitialize(int *argc, char ***argv)
+{
+    bio_out = BIO_new_file("/dev/null", "w");
+    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
+    ERR_get_state();
+    CRYPTO_free_ex_index(0, -1);
+    return 1;
+}
+
+int FuzzerTestOneInput(const uint8_t *buf, size_t len)
+{
+    (void)ASN1_parse_dump(bio_out, buf, len, 0, 0);
+    ERR_clear_error();
+    return 0;
+}
+
+void FuzzerCleanup(void)
+{
+    BIO_free(bio_out);
+}