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tls: do not free cert in .getCertificate()

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The documentation of `SSL_get_certificate` states that it returns
an internal pointer that must not be freed by the caller.

Therefore, using a smart pointer to take ownership is incorrect.

Refs: https://man.openbsd.org/SSL_get_certificate.3
Refs: https://github.com/nodejs/node/pull/24261
Fixes: https://github.com/nodejs-private/security/issues/217

PR-URL: https://github.com/nodejs/node/pull/25490
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
This commit is contained in:
Anna Henningsen 2019-01-14 12:08:55 +01:00
parent 9e9890a8ff
commit e888f667f5
No known key found for this signature in database
GPG Key ID: 9C63F3A6CD2AD8F9
2 changed files with 10 additions and 5 deletions
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6
src/node_crypto.cc
View File

@ -1962,10 +1962,10 @@ void SSLWrap<Base>::GetCertificate(
Local<Object> result;
X509Pointer cert(SSL_get_certificate(w->ssl_.get()));
X509* cert = SSL_get_certificate(w->ssl_.get());
if (cert)
result = X509ToObject(env, cert.get());
if (cert != nullptr)
result = X509ToObject(env, cert);
args.GetReturnValue().Set(result);
}

9
test/parallel/test-tls-pfx-authorizationerror.js
View File

@ -37,8 +37,13 @@ const server = tls
rejectUnauthorized: false
},
function() {
assert.strictEqual(client.getCertificate().serialNumber,
'ECC9B856270DA9A8');
for (let i = 0; i < 10; ++i) {
// Calling this repeatedly is a regression test that verifies
// that .getCertificate() does not accidentally decrease the
// reference count of the X509* certificate on the native side.
assert.strictEqual(client.getCertificate().serialNumber,
'ECC9B856270DA9A8');
}
client.end();
server.close();
}