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Fix bug #74651 - check EVP_SealInit as it can return -1

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This commit is contained in:
Stanislav Malyshev 2017-06-19 23:06:24 -07:00
parent 4b38feabe7
commit 73cabfedf5
3 changed files with 45 additions and 1 deletions
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2
ext/openssl/openssl.c
View File

@ -5421,7 +5421,7 @@ PHP_FUNCTION(openssl_seal)
buf = emalloc(data_len + EVP_CIPHER_CTX_block_size(ctx));
EVP_CIPHER_CTX_cleanup(ctx);
if (!EVP_SealInit(ctx, cipher, eks, eksl, &iv_buf[0], pkeys, nkeys) ||
if (EVP_SealInit(ctx, cipher, eks, eksl, &iv_buf[0], pkeys, nkeys) <= 0 ||
!EVP_SealUpdate(ctx, buf, &len1, (unsigned char *)data, (int)data_len) ||
!EVP_SealFinal(ctx, buf + len1, &len2)) {
RETVAL_FALSE;

27
ext/openssl/tests/74651.pem Normal file
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@ -0,0 +1,27 @@
-----BEGIN CERTIFICATE-----
MIIEoDCCBAmgAwIBAgIBJzANBgkqhkiG9w0BAQQFADCBkDELMAkGA1UEFhMCUk8x
EDAOBgNVBAgTB1JvbWFuaWExEDAOBgNVBAcTB0NyYWlvdmExDzANBgNVBAoTBlNl
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A4GBAIBIOJ+iiLyQfNJEY+IMefayQea0nmuXYY+F+L1DFjSC7xChytgYoPNnKkhh
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Fl63S7uCOhnVJt+4MnUK1N6/pwgsp+Z2GvEsDG1qCKnvNpf6
-----END CERTIFICATE-----

17
ext/openssl/tests/bug74651.phpt Normal file
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@ -0,0 +1,17 @@
--TEST--
Bug #74651: negative-size-param (-1) in memcpy in zif_openssl_seal()
--SKIPIF--
<?php
if (!extension_loaded("openssl")) die("skip openssl not loaded");
?>
--FILE--
<?php
$inputstr = file_get_contents(__DIR__ . "/74651.pem");
$pub_key_id = openssl_get_publickey($inputstr);
var_dump($pub_key_id);
var_dump(openssl_seal($inputstr, $sealed, $ekeys, array($pub_key_id, $pub_key_id), 'AES-128-ECB'));
?>
--EXPECTF--
resource(%d) of type (OpenSSL key)
bool(false)