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b9a86d5dd8
evp_pkey_get_legacy() will return NULL on failure, however several uses of it or its wrappers does not check the return value of evp_pkey_get_legacy(), which could lead to NULL pointer dereference. Fix those possible bugs by adding NULL checking. Reviewed-by: Shane Lontis <shane.lontis@oracle.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/17967)
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/*
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* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* We need to use the deprecated RSA low level calls */
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#define OPENSSL_SUPPRESS_DEPRECATED
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include "crypto/evp.h"
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int EVP_PKEY_decrypt_old(unsigned char *key, const unsigned char *ek, int ekl,
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EVP_PKEY *priv)
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{
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int ret = -1;
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RSA *rsa = NULL;
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if (EVP_PKEY_get_id(priv) != EVP_PKEY_RSA) {
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ERR_raise(ERR_LIB_EVP, EVP_R_PUBLIC_KEY_NOT_RSA);
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goto err;
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}
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rsa = evp_pkey_get0_RSA_int(priv);
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if (rsa == NULL)
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goto err;
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ret =
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RSA_private_decrypt(ekl, ek, key, rsa, RSA_PKCS1_PADDING);
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err:
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return ret;
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}
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