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Restrict range of buffer_length on all platforms to INT_MAX #9126

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Restrict range of buffer_length on all platforms to INT_MAX #9126

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452f1fb
Restrict range of buffer_length on all platforms to INT_MAX
cmb69 Jul 25, 2022
1a3d5a5
Fix test expectation
cmb69 Jul 25, 2022
6814b59
Split range check to retain original error message
cmb69 Jul 25, 2022
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11 changes: 5 additions & 6 deletions ext/openssl/openssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7642,14 +7642,14 @@ PHP_FUNCTION(openssl_cipher_iv_length)
PHP_OPENSSL_API zend_string* php_openssl_random_pseudo_bytes(zend_long buffer_length)
{
zend_string *buffer = NULL;
if (buffer_length <= 0
#ifndef PHP_WIN32
|| ZEND_LONG_INT_OVFL(buffer_length)
#endif
) {
if (buffer_length <= 0) {
zend_argument_value_error(1, "must be greater than 0");
return NULL;
}
if (ZEND_LONG_INT_OVFL(buffer_length)) {
zend_argument_value_error(1, "must be less than 2147483648");
return NULL;
}
buffer = zend_string_alloc(buffer_length, 0);

#ifdef PHP_WIN32
Expand All @@ -7663,7 +7663,6 @@ PHP_OPENSSL_API zend_string* php_openssl_random_pseudo_bytes(zend_long buffer_le

PHP_OPENSSL_CHECK_LONG_TO_INT_NULL_RETURN(buffer_length, length);
PHP_OPENSSL_RAND_ADD_TIME();
/* FIXME loop if requested size > INT_MAX */
if (RAND_bytes((unsigned char*)ZSTR_VAL(buffer), (int)buffer_length) <= 0) {
zend_string_release_ex(buffer, 0);
zend_throw_exception(zend_ce_exception, "Error reading from source device", 0);
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