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openssl: Fix checks on BIO_get_mem_ptr() #20998

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Merged
ndossche merged 1 commit into from
Aug 3, 2026
+27 −40
Merged

openssl: Fix checks on BIO_get_mem_ptr() #20998

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67 changes: 27 additions & 40 deletions ext/openssl/openssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1129,6 +1129,7 @@ PHP_FUNCTION(openssl_spki_export)
EVP_PKEY *pkey = NULL;
NETSCAPE_SPKI *spki = NULL;
BIO *out = NULL;
BUF_MEM *bio_buf;

if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &spkstr, &spkstr_len) == FAILURE) {
RETURN_THROWS();
Expand Down Expand Up @@ -1158,10 +1159,7 @@ PHP_FUNCTION(openssl_spki_export)
}

out = BIO_new(BIO_s_mem());
if (out && PEM_write_bio_PUBKEY(out, pkey)) {
BUF_MEM *bio_buf;

BIO_get_mem_ptr(out, &bio_buf);
if (out && PEM_write_bio_PUBKEY(out, pkey) && BIO_get_mem_ptr(out, &bio_buf) > 0) {
RETVAL_STRINGL((char *)bio_buf->data, bio_buf->length);
} else {
php_openssl_store_errors();
Expand Down Expand Up @@ -1232,6 +1230,7 @@ PHP_FUNCTION(openssl_x509_export)
zval *zout;
bool notext = 1;
BIO * bio_out;
BUF_MEM *bio_buf;

ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_OBJ_OF_CLASS_OR_STR(cert_obj, php_openssl_certificate_ce, cert_str)
Expand All @@ -1255,10 +1254,7 @@ PHP_FUNCTION(openssl_x509_export)
}
if (!notext && !X509_print(bio_out, cert)) {
php_openssl_store_errors();
} else if (PEM_write_bio_X509(bio_out, cert)) {
BUF_MEM *bio_buf;

BIO_get_mem_ptr(bio_out, &bio_buf);
} else if (PEM_write_bio_X509(bio_out, cert) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZEND_TRY_ASSIGN_REF_STRINGL(zout, bio_buf->data, bio_buf->length);

RETVAL_TRUE;
Expand Down Expand Up @@ -1539,16 +1535,18 @@ PHP_FUNCTION(openssl_x509_parse)
goto err_subitem;
}
if (nid == NID_subject_alt_name) {
if (openssl_x509v3_subjectAltName(bio_out, extension) == 0) {
BIO_get_mem_ptr(bio_out, &bio_buf);
if (openssl_x509v3_subjectAltName(bio_out, extension) == 0 && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
add_assoc_stringl(&subitem, extname, bio_buf->data, bio_buf->length);
} else {
BIO_free(bio_out);
goto err_subitem;
}
}
else if (X509V3_EXT_print(bio_out, extension, 0, 0) > 0) {
BIO_get_mem_ptr(bio_out, &bio_buf);
if (BIO_get_mem_ptr(bio_out, &bio_buf) <= 0) {
BIO_free(bio_out);
goto err_subitem;
}
add_assoc_stringl(&subitem, extname, bio_buf->data, bio_buf->length);
} else {
php_openssl_add_assoc_asn1_string(&subitem, extname, X509_EXTENSION_get_data(extension));
Expand Down Expand Up @@ -1854,11 +1852,9 @@ PHP_FUNCTION(openssl_pkcs12_export)
p12 = PKCS12_create(pass, friendly_name, priv_key, cert, ca, 0, 0, 0, 0, 0);

if (p12 != NULL) {
BUF_MEM *bio_buf;
bio_out = BIO_new(BIO_s_mem());
if (bio_out && i2d_PKCS12_bio(bio_out, p12)) {
BUF_MEM *bio_buf;

BIO_get_mem_ptr(bio_out, &bio_buf);
if (bio_out && i2d_PKCS12_bio(bio_out, p12) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZEND_TRY_ASSIGN_REF_STRINGL(zout, bio_buf->data, bio_buf->length);

RETVAL_TRUE;
Expand Down Expand Up @@ -1920,10 +1916,9 @@ PHP_FUNCTION(openssl_pkcs12_read)
}

if (cert) {
BUF_MEM *bio_buf;
bio_out = BIO_new(BIO_s_mem());
if (bio_out && PEM_write_bio_X509(bio_out, cert)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (bio_out && PEM_write_bio_X509(bio_out, cert) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zcert, bio_buf->data, bio_buf->length);
add_assoc_zval(zout, "cert", &zcert);
} else {
Expand All @@ -1933,14 +1928,13 @@ PHP_FUNCTION(openssl_pkcs12_read)
}

if (pkey) {
BUF_MEM *bio_buf;
bio_out = BIO_new(BIO_s_mem());
if (!bio_out) {
goto cleanup;
}

if (PEM_write_bio_PrivateKey(bio_out, pkey, NULL, NULL, 0, 0, NULL)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_PrivateKey(bio_out, pkey, NULL, NULL, 0, 0, NULL) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zpkey, bio_buf->data, bio_buf->length);
add_assoc_zval(zout, "pkey", &zpkey);
} else {
Expand All @@ -1959,12 +1953,11 @@ PHP_FUNCTION(openssl_pkcs12_read)

for (i = 0; i < cert_num; i++) {
zval zextracert;
BUF_MEM *bio_buf;
X509* aCA = sk_X509_pop(ca);
if (!aCA) break;

if (PEM_write_bio_X509(bio_out, aCA)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_X509(bio_out, aCA) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zextracert, bio_buf->data, bio_buf->length);
add_index_zval(&zextracerts, i, &zextracert);
}
Expand Down Expand Up @@ -2061,6 +2054,7 @@ PHP_FUNCTION(openssl_csr_export)
zval *zout;
bool notext = 1;
BIO * bio_out;
BUF_MEM *bio_buf;

ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_OBJ_OF_CLASS_OR_STR(csr_obj, php_openssl_request_ce, csr_str)
Expand All @@ -2082,10 +2076,7 @@ PHP_FUNCTION(openssl_csr_export)
bio_out = BIO_new(BIO_s_mem());
if (!notext && !X509_REQ_print(bio_out, csr)) {
php_openssl_store_errors();
} else if (PEM_write_bio_X509_REQ(bio_out, csr)) {
BUF_MEM *bio_buf;

BIO_get_mem_ptr(bio_out, &bio_buf);
} else if (PEM_write_bio_X509_REQ(bio_out, csr) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZEND_TRY_ASSIGN_REF_STRINGL(zout, bio_buf->data, bio_buf->length);

RETVAL_TRUE;
Expand Down Expand Up @@ -3243,11 +3234,10 @@ PHP_FUNCTION(openssl_pkcs7_read)
goto clean_exit;
}
for (i = 0; i < sk_X509_num(certs); i++) {
BUF_MEM *bio_buf;
X509* ca = sk_X509_value(certs, i);

if (PEM_write_bio_X509(bio_out, ca)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_X509(bio_out, ca) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zcert, bio_buf->data, bio_buf->length);
add_index_zval(zout, i, &zcert);
}
Expand All @@ -3262,11 +3252,10 @@ PHP_FUNCTION(openssl_pkcs7_read)
goto clean_exit;
}
for (i = 0; i < sk_X509_CRL_num(crls); i++) {
BUF_MEM *bio_buf;
X509_CRL* crl = sk_X509_CRL_value(crls, i);

if (PEM_write_bio_X509_CRL(bio_out, crl)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_X509_CRL(bio_out, crl) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zcert, bio_buf->data, bio_buf->length);
add_index_zval(zout, i, &zcert);
}
Expand Down Expand Up @@ -3919,11 +3908,10 @@ PHP_FUNCTION(openssl_cms_read)
}

for (i = 0; i < sk_X509_num(certs); i++) {
BUF_MEM *bio_buf;
X509* ca = sk_X509_value(certs, i);

if (PEM_write_bio_X509(bio_out, ca)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_X509(bio_out, ca) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zcert, bio_buf->data, bio_buf->length);
add_index_zval(zout, i, &zcert);
}
Expand All @@ -3939,11 +3927,10 @@ PHP_FUNCTION(openssl_cms_read)
}

for (i = 0; i < sk_X509_CRL_num(crls); i++) {
BUF_MEM *bio_buf;
X509_CRL* crl = sk_X509_CRL_value(crls, i);

if (PEM_write_bio_X509_CRL(bio_out, crl)) {
BUF_MEM *bio_buf;
BIO_get_mem_ptr(bio_out, &bio_buf);
if (PEM_write_bio_X509_CRL(bio_out, crl) && BIO_get_mem_ptr(bio_out, &bio_buf) > 0) {
ZVAL_STRINGL(&zcert, bio_buf->data, bio_buf->length);
add_index_zval(zout, i, &zcert);
}
Expand Down
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