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b24b2a |
From ae4f772872661d6435c27e50937a0c3cbcede43c Mon Sep 17 00:00:00 2001
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d744d0 |
From: =?UTF-8?q?Jan=20Stan=C4=9Bk?= <jstanek@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
b24b2a |
Date: Mon, 23 Nov 2020 11:56:26 +0100
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d744d0 |
Subject: [PATCH] Use OpenSSL 1.0 API
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d744d0 |
MIME-Version: 1.0
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d744d0 |
Content-Type: text/plain; charset=UTF-8
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d744d0 |
Content-Transfer-Encoding: 8bit
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d744d0 |
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d744d0 |
- Pass non-const pointer to BIO_new
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d744d0 |
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d744d0 |
In legacy OpenSSL, the method parameter for BIO_new is not marked const,
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d744d0 |
although the function does not need it to be mutable.
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d744d0 |
This is likely an oversight in the interface.
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d744d0 |
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d744d0 |
The provided "fix" is potentially dangerous,
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d744d0 |
as casting away `const`-ness is potentially an undefined behaviour.
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d744d0 |
Since the code around assumes it is constant anyway,
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d744d0 |
it *should* be fine here – but use with care.
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d744d0 |
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d744d0 |
- Remove const-classifier for SSL_SESSION callback argument
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d744d0 |
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d744d0 |
In legacy OpenSSL, the parameter is expected to be mutable.
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d744d0 |
Using `const` prevents passing the method as a function pointer
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d744d0 |
to other OpenSSL API functions.
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d744d0 |
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b24b2a |
- Provide GetCipherValue wrapper for non-const strings
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b24b2a |
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d744d0 |
- Sanitize inputs into PBKDF2
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d744d0 |
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d744d0 |
Signed-off-by: Jan Staněk <jstanek@redhat.com>
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d744d0 |
---
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b24b2a |
src/node_crypto.cc | 26 ++++++++++++++++++++++++--
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b24b2a |
src/node_crypto.h | 4 ++++
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b24b2a |
src/node_crypto_bio.cc | 4 ++++
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b24b2a |
src/node_crypto_common.cc | 8 ++++++++
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b24b2a |
4 files changed, 40 insertions(+), 2 deletions(-)
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d744d0 |
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d744d0 |
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
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b24b2a |
index 90df5f25e0..7be3f77e1a 100644
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d744d0 |
--- a/src/node_crypto.cc
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d744d0 |
+++ b/src/node_crypto.cc
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d744d0 |
@@ -123,7 +123,11 @@ template int SSLWrap<TLSWrap>::SetCACerts(SecureContext* sc);
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d744d0 |
template void SSLWrap<TLSWrap>::MemoryInfo(MemoryTracker* tracker) const;
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d744d0 |
template SSL_SESSION* SSLWrap<TLSWrap>::GetSessionCallback(
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d744d0 |
SSL* s,
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d744d0 |
+#if OPENSSL_IS_LEGACY
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d744d0 |
+ unsigned char *key,
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d744d0 |
+#else
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d744d0 |
const unsigned char* key,
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d744d0 |
+#endif
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d744d0 |
int len,
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d744d0 |
int* copy);
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d744d0 |
template int SSLWrap<TLSWrap>::NewSessionCallback(SSL* s,
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b24b2a |
@@ -1746,7 +1750,11 @@ void SSLWrap<Base>::ConfigureSecureContext(SecureContext* sc) {
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d744d0 |
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d744d0 |
template <class Base>
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d744d0 |
SSL_SESSION* SSLWrap<Base>::GetSessionCallback(SSL* s,
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d744d0 |
+#if OPENSSL_IS_LEGACY
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d744d0 |
+ unsigned char* key,
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d744d0 |
+#else
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d744d0 |
const unsigned char* key,
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d744d0 |
+#endif
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d744d0 |
int len,
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d744d0 |
int* copy) {
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d744d0 |
Base* w = static_cast<Base*>(SSL_get_app_data(s));
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b24b2a |
@@ -5917,9 +5925,23 @@ struct PBKDF2Job : public CryptoJob {
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d744d0 |
}
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d744d0 |
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d744d0 |
inline void DoThreadPoolWork() override {
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d744d0 |
- auto salt_data = reinterpret_cast<const unsigned char*>(salt.data());
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d744d0 |
+ static const char * const empty = "";
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d744d0 |
+
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d744d0 |
+ auto pass_data = reinterpret_cast<const char *>(empty);
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d744d0 |
+ auto pass_size = int(0);
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d744d0 |
+ auto salt_data = reinterpret_cast<const unsigned char *>(empty);
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d744d0 |
+ auto salt_size = int(0);
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d744d0 |
+
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d744d0 |
+ if (pass.size() > 0) {
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d744d0 |
+ pass_data = pass.data(), pass_size = pass.size();
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d744d0 |
+ }
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d744d0 |
+ if (salt.size() > 0) {
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d744d0 |
+ salt_data = reinterpret_cast<const unsigned char *>(salt.data());
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d744d0 |
+ salt_size = salt.size();
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d744d0 |
+ }
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d744d0 |
+
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d744d0 |
const bool ok =
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d744d0 |
- PKCS5_PBKDF2_HMAC(pass.data(), pass.size(), salt_data, salt.size(),
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d744d0 |
+ PKCS5_PBKDF2_HMAC(pass_data, pass_size, salt_data, salt_size,
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d744d0 |
iteration_count, digest, keybuf_size, keybuf_data);
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d744d0 |
success = Just(ok);
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d744d0 |
Cleanse();
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d744d0 |
diff --git a/src/node_crypto.h b/src/node_crypto.h
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b24b2a |
index 0b9dab833d..7d6417b66f 100644
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d744d0 |
--- a/src/node_crypto.h
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d744d0 |
+++ b/src/node_crypto.h
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b24b2a |
@@ -234,7 +234,11 @@ class SSLWrap {
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d744d0 |
static void AddMethods(Environment* env, v8::Local<v8::FunctionTemplate> t);
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d744d0 |
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d744d0 |
static SSL_SESSION* GetSessionCallback(SSL* s,
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
+#if OPENSSL_IS_LEGACY
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
+ unsigned char* key,
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
+#else // OPENSSL_IS_LEGACY
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
const unsigned char* key,
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d744d0 |
+#endif // OPENSSL_IS_LEGACY
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d744d0 |
int len,
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d744d0 |
int* copy);
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d744d0 |
static int NewSessionCallback(SSL* s, SSL_SESSION* sess);
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d744d0 |
diff --git a/src/node_crypto_bio.cc b/src/node_crypto_bio.cc
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d744d0 |
index 55f5e8a5a3..c2a44fdb86 100644
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d744d0 |
--- a/src/node_crypto_bio.cc
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
+++ b/src/node_crypto_bio.cc
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
@@ -31,7 +31,11 @@ namespace node {
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d744d0 |
namespace crypto {
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d744d0 |
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d744d0 |
BIOPointer NodeBIO::New(Environment* env) {
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d744d0 |
+#if OPENSSL_IS_LEGACY
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d744d0 |
+ BIOPointer bio(BIO_new(const_cast<BIO_METHOD *>(GetMethod())));
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
d744d0 |
+#else
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d744d0 |
BIOPointer bio(BIO_new(GetMethod()));
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d744d0 |
+#endif
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d744d0 |
if (bio && env != nullptr)
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d744d0 |
NodeBIO::FromBIO(bio.get())->env_ = env;
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d744d0 |
return bio;
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b24b2a |
diff --git a/src/node_crypto_common.cc b/src/node_crypto_common.cc
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b24b2a |
index 6c3bb0b1b6..d1d9edd6cd 100644
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b24b2a |
--- a/src/node_crypto_common.cc
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b24b2a |
+++ b/src/node_crypto_common.cc
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b24b2a |
@@ -392,6 +392,14 @@ MaybeLocal<Value> GetCipherValue(Environment* env,
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b24b2a |
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b24b2a |
return OneByteString(env->isolate(), getstr(cipher));
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b24b2a |
}
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b24b2a |
+MaybeLocal<Value> GetCipherValue(Environment* env,
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b24b2a |
+ const SSL_CIPHER* cipher,
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b24b2a |
+ char* (*getstr)(const SSL_CIPHER* cipher)) {
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b24b2a |
+ if (cipher == nullptr) {
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b24b2a |
+ return Undefined(env->isolate());
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b24b2a |
+ }
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b24b2a |
+ return OneByteString(env->isolate(), const_cast<const char *>(getstr(cipher)));
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b24b2a |
+}
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b24b2a |
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b24b2a |
MaybeLocal<Value> GetCipherName(Environment* env, const SSL_CIPHER* cipher) {
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b24b2a |
return GetCipherValue(env, cipher, SSL_CIPHER_get_name);
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d744d0 |
--
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b24b2a |
2.28.0
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d744d0 |
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