Accepting request 1090858 from home:krop:Qt6:Release

Add another security fix (not built yet)

OBS-URL: https://build.opensuse.org/request/show/1090858
OBS-URL: https://build.opensuse.org/package/show/KDE:Qt6/qt6-base?expand=0&rev=54
This commit is contained in:
Fabian Vogt 2023-06-05 12:05:06 +00:00 committed by Git OBS Bridge
parent ca806c6e68
commit fb13019c2f
4 changed files with 412 additions and 0 deletions

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@ -0,0 +1,291 @@
From ada2c573c1a25f8d96577734968fe317ddfa292a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5rten=20Nordheim?= <marten.nordheim@qt.io>
Date: Wed, 10 May 2023 16:43:41 +0200
Subject: [PATCH] Schannel: Reject certificate not signed by a configured CA
certificate
Not entirely clear why, but when building the certificate chain for a
peer the system certificate store is searched for root certificates.
General expectation is that after calling
`sslConfiguration.setCaCertificates()` the system certificates will
not be taken into consideration.
To work around this behavior, we do a manual check that the root of the
chain is part of the configured CA certificates.
Pick-to: 6.5 6.2 5.15
Change-Id: I03666a4d9b0eac39ae97e150b4743120611a11b3
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
---
src/plugins/tls/schannel/qtls_schannel.cpp | 21 ++++
.../network/ssl/client-auth/CMakeLists.txt | 24 ++++
.../network/ssl/client-auth/certs/.gitignore | 4 +
.../client-auth/certs/accepted-client.conf | 14 +++
.../network/ssl/client-auth/certs/generate.sh | 33 +++++
.../tst_manual_ssl_client_auth.cpp | 118 ++++++++++++++++++
6 files changed, 214 insertions(+)
create mode 100644 tests/manual/network/ssl/client-auth/CMakeLists.txt
create mode 100644 tests/manual/network/ssl/client-auth/certs/.gitignore
create mode 100644 tests/manual/network/ssl/client-auth/certs/accepted-client.conf
create mode 100755 tests/manual/network/ssl/client-auth/certs/generate.sh
create mode 100644 tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
diff --git a/src/plugins/tls/schannel/qtls_schannel.cpp b/src/plugins/tls/schannel/qtls_schannel.cpp
index d72aaa5a36..ae9ff06eae 100644
--- a/src/plugins/tls/schannel/qtls_schannel.cpp
+++ b/src/plugins/tls/schannel/qtls_schannel.cpp
@@ -2066,6 +2066,27 @@ bool TlsCryptographSchannel::verifyCertContext(CERT_CONTEXT *certContext)
verifyDepth = DWORD(q->peerVerifyDepth());
const auto &caCertificates = q->sslConfiguration().caCertificates();
+
+ if (!rootCertOnDemandLoadingAllowed()
+ && !(chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_PARTIAL_CHAIN)
+ && (q->peerVerifyMode() == QSslSocket::VerifyPeer
+ || (isClient && q->peerVerifyMode() == QSslSocket::AutoVerifyPeer))) {
+ // When verifying a peer Windows "helpfully" builds a chain that
+ // may include roots from the system store. But we don't want that if
+ // the user has set their own CA certificates.
+ // Since Windows claims this is not a partial chain the root is included
+ // and we have to check that it is one of our configured CAs.
+ CERT_CHAIN_ELEMENT *element = chain->rgpElement[chain->cElement - 1];
+ QSslCertificate certificate = getCertificateFromChainElement(element);
+ if (!caCertificates.contains(certificate)) {
+ auto error = QSslError(QSslError::CertificateUntrusted, certificate);
+ sslErrors += error;
+ emit q->peerVerifyError(error);
+ if (q->state() != QAbstractSocket::ConnectedState)
+ return false;
+ }
+ }
+
QList<QSslCertificate> peerCertificateChain;
for (DWORD i = 0; i < verifyDepth; i++) {
CERT_CHAIN_ELEMENT *element = chain->rgpElement[i];
diff --git a/tests/manual/network/ssl/client-auth/CMakeLists.txt b/tests/manual/network/ssl/client-auth/CMakeLists.txt
new file mode 100644
index 0000000000..67ecc20bf4
--- /dev/null
+++ b/tests/manual/network/ssl/client-auth/CMakeLists.txt
@@ -0,0 +1,24 @@
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+qt_internal_add_manual_test(tst_manual_ssl_client_auth
+ SOURCES
+ tst_manual_ssl_client_auth.cpp
+ LIBRARIES
+ Qt::Network
+)
+
+qt_internal_add_resource(tst_manual_ssl_client_auth "tst_manual_ssl_client_auth"
+ PREFIX
+ "/"
+ FILES
+ "certs/127.0.0.1.pem"
+ "certs/127.0.0.1-key.pem"
+ "certs/127.0.0.1-client.pem"
+ "certs/127.0.0.1-client-key.pem"
+ "certs/accepted-client.pem"
+ "certs/accepted-client-key.pem"
+ "certs/rootCA.pem"
+ BASE
+ "certs"
+)
diff --git a/tests/manual/network/ssl/client-auth/certs/.gitignore b/tests/manual/network/ssl/client-auth/certs/.gitignore
new file mode 100644
index 0000000000..5866f7b609
--- /dev/null
+++ b/tests/manual/network/ssl/client-auth/certs/.gitignore
@@ -0,0 +1,4 @@
+*
+!/.gitignore
+!/generate.sh
+!/accepted-client.conf
diff --git a/tests/manual/network/ssl/client-auth/certs/accepted-client.conf b/tests/manual/network/ssl/client-auth/certs/accepted-client.conf
new file mode 100644
index 0000000000..a88b276efe
--- /dev/null
+++ b/tests/manual/network/ssl/client-auth/certs/accepted-client.conf
@@ -0,0 +1,14 @@
+[req]
+default_md = sha512
+basicConstraints = CA:FALSE
+extendedKeyUsage = clientAuth
+[req]
+distinguished_name = client_distinguished_name
+prompt = no
+[client_distinguished_name]
+C = NO
+ST = Oslo
+L = Oslo
+O = The Qt Project
+OU = The Qt Project
+CN = Fake Qt Project Client Certificate
diff --git a/tests/manual/network/ssl/client-auth/certs/generate.sh b/tests/manual/network/ssl/client-auth/certs/generate.sh
new file mode 100755
index 0000000000..5dbe3b3712
--- /dev/null
+++ b/tests/manual/network/ssl/client-auth/certs/generate.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+# Requires mkcert and openssl
+
+warn () { echo "$@" >&2; }
+die () { warn "$@"; exit 1; }
+
+
+command -v mkcert 1>/dev/null 2>&1 || die "Failed to find mkcert"
+command -v openssl 1>/dev/null 2>&1 || die "Failed to find openssl"
+
+SCRIPT=$(realpath "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+
+pushd "$SCRIPTPATH" || die "Unable to pushd to $SCRIPTPATH"
+mkcert 127.0.0.1
+mkcert -client 127.0.0.1
+warn "Remember to run mkcert -install if you haven't already"
+
+# Generate CA
+openssl genrsa -out ca-key.pem 2048
+openssl req -new -x509 -noenc -days 365 -key ca-key.pem -out rootCA.pem
+
+# Generate accepted client certificate
+openssl genrsa -out accepted-client-key.pem 2048
+openssl req -new -sha512 -nodes -key accepted-client-key.pem -out accepted-client.csr -config accepted-client.conf
+openssl x509 -req -sha512 -days 45 -in accepted-client.csr -CA rootCA.pem -CAkey ca-key.pem -CAcreateserial -out accepted-client.pem
+rm accepted-client.csr
+rm rootCA.srl
+
+popd || die "Unable to popd"
diff --git a/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp b/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
new file mode 100644
index 0000000000..2307cbb191
--- /dev/null
+++ b/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
@@ -0,0 +1,118 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QtCore/qcoreapplication.h>
+
+#include <QtCore/qthread.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qdir.h>
+
+#include <QtNetwork/qsslsocket.h>
+#include <QtNetwork/qsslserver.h>
+#include <QtNetwork/qsslconfiguration.h>
+#include <QtNetwork/qsslkey.h>
+
+// Client and/or server presents a certificate signed by a system-trusted CA
+// but the other side presents a certificate signed by a different CA.
+constexpr bool TestServerPresentsIncorrectCa = false;
+constexpr bool TestClientPresentsIncorrectCa = true;
+
+class ServerThread : public QThread
+{
+ Q_OBJECT
+public:
+ void run() override
+ {
+ QSslServer server;
+
+ QSslConfiguration config = server.sslConfiguration();
+ QList<QSslCertificate> certs = QSslCertificate::fromPath(QStringLiteral(":/rootCA.pem"));
+ config.setCaCertificates(certs);
+ config.setLocalCertificate(QSslCertificate::fromPath(QStringLiteral(":/127.0.0.1.pem"))
+ .first());
+ QFile keyFile(QStringLiteral(":/127.0.0.1-key.pem"));
+ if (!keyFile.open(QIODevice::ReadOnly))
+ qFatal("Failed to open key file");
+ config.setPrivateKey(QSslKey(&keyFile, QSsl::Rsa));
+ config.setPeerVerifyMode(QSslSocket::VerifyPeer);
+ server.setSslConfiguration(config);
+
+ connect(&server, &QSslServer::pendingConnectionAvailable, [&server]() {
+ QSslSocket *socket = static_cast<QSslSocket *>(server.nextPendingConnection());
+ qDebug() << "[s] newConnection" << socket->peerAddress() << socket->peerPort();
+ socket->disconnectFromHost();
+ qApp->quit();
+ });
+ connect(&server, &QSslServer::startedEncryptionHandshake, [](QSslSocket *socket) {
+ qDebug() << "[s] new handshake" << socket->peerAddress() << socket->peerPort();
+ });
+ connect(&server, &QSslServer::errorOccurred,
+ [](QSslSocket *socket, QAbstractSocket::SocketError error) {
+ qDebug() << "[s] errorOccurred" << socket->peerAddress() << socket->peerPort()
+ << error << socket->errorString();
+ });
+ connect(&server, &QSslServer::peerVerifyError,
+ [](QSslSocket *socket, const QSslError &error) {
+ qDebug() << "[s] peerVerifyError" << socket->peerAddress() << socket->peerPort()
+ << error;
+ });
+ server.listen(QHostAddress::LocalHost, 24242);
+
+ exec();
+
+ server.close();
+ }
+};
+
+int main(int argc, char **argv)
+{
+ QCoreApplication app(argc, argv);
+
+ using namespace Qt::StringLiterals;
+
+ if (!QFileInfo(u":/rootCA.pem"_s).exists())
+ qFatal("rootCA.pem not found. Did you run generate.sh in the certs directory?");
+
+ ServerThread serverThread;
+ serverThread.start();
+
+ QSslSocket socket;
+ QSslConfiguration config = socket.sslConfiguration();
+ QString certificatePath;
+ QString keyFileName;
+ if constexpr (TestClientPresentsIncorrectCa) { // true: Present cert signed with incorrect CA: should fail
+ certificatePath = u":/127.0.0.1-client.pem"_s;
+ keyFileName = u":/127.0.0.1-client-key.pem"_s;
+ } else { // false: Use correct CA: should succeed
+ certificatePath = u":/accepted-client.pem"_s;
+ keyFileName = u":/accepted-client-key.pem"_s;
+ }
+ config.setLocalCertificate(QSslCertificate::fromPath(certificatePath).first());
+ if (TestServerPresentsIncorrectCa) // true: Verify server using incorrect CA: should fail
+ config.setCaCertificates(QSslCertificate::fromPath(u":/rootCA.pem"_s));
+ QFile keyFile(keyFileName);
+ if (!keyFile.open(QIODevice::ReadOnly))
+ qFatal("Failed to open key file");
+ config.setPrivateKey(QSslKey(&keyFile, QSsl::Rsa));
+ socket.setSslConfiguration(config);
+
+ QObject::connect(&socket, &QSslSocket::encrypted, []() { qDebug() << "[c] encrypted"; });
+ QObject::connect(&socket, &QSslSocket::errorOccurred,
+ [&socket](QAbstractSocket::SocketError error) {
+ qDebug() << "[c] errorOccurred" << error << socket.errorString();
+ qApp->quit();
+ });
+ QObject::connect(&socket, &QSslSocket::sslErrors, [](const QList<QSslError> &errors) {
+ qDebug() << "[c] sslErrors" << errors;
+ });
+ QObject::connect(&socket, &QSslSocket::connected, []() { qDebug() << "[c] connected"; });
+
+ socket.connectToHostEncrypted(QStringLiteral("127.0.0.1"), 24242);
+
+ const int res = app.exec();
+ serverThread.quit();
+ serverThread.wait();
+ return res;
+}
+
+#include "tst_manual_ssl_client_auth.moc"
--
2.40.1

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@ -0,0 +1,112 @@
From 57ba6260c0801055b7188fdaa1818b940590f5f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A5rten=20Nordheim?= <marten.nordheim@qt.io>
Date: Thu, 25 May 2023 14:40:29 +0200
Subject: [PATCH] Ssl: Copy the on-demand cert loading bool from default config
Otherwise individual sockets will still load system certificates when
a chain doesn't match against the configured CA certificates.
That's not intended behavior, since specifically setting the CA
certificates means you don't want the system certificates to be used.
Follow-up to/amends ada2c573c1a25f8d96577734968fe317ddfa292a
This is potentially a breaking change because now, if you ever add a
CA to the default config, it will disable loading system certificates
on demand for all sockets. And the only way to re-enable it is to
create a null-QSslConfiguration and set it as the new default.
Pick-to: 6.5 6.2 5.15
Change-Id: Ic3b2ab125c0cdd58ad654af1cb36173960ce2d1e
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
---
src/network/ssl/qsslsocket.cpp | 5 ++++
.../tst_manual_ssl_client_auth.cpp | 24 ++++++++++++++++---
2 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/src/network/ssl/qsslsocket.cpp b/src/network/ssl/qsslsocket.cpp
index 4eefe43929..0563fd0663 100644
--- a/src/network/ssl/qsslsocket.cpp
+++ b/src/network/ssl/qsslsocket.cpp
@@ -1973,6 +1973,10 @@ QSslSocketPrivate::QSslSocketPrivate()
, flushTriggered(false)
{
QSslConfigurationPrivate::deepCopyDefaultConfiguration(&configuration);
+ // If the global configuration doesn't allow root certificates to be loaded
+ // on demand then we have to disable it for this socket as well.
+ if (!configuration.allowRootCertOnDemandLoading)
+ allowRootCertOnDemandLoading = false;
const auto *tlsBackend = tlsBackendInUse();
if (!tlsBackend) {
@@ -2281,6 +2285,7 @@ void QSslConfigurationPrivate::deepCopyDefaultConfiguration(QSslConfigurationPri
ptr->sessionProtocol = global->sessionProtocol;
ptr->ciphers = global->ciphers;
ptr->caCertificates = global->caCertificates;
+ ptr->allowRootCertOnDemandLoading = global->allowRootCertOnDemandLoading;
ptr->protocol = global->protocol;
ptr->peerVerifyMode = global->peerVerifyMode;
ptr->peerVerifyDepth = global->peerVerifyDepth;
diff --git a/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp b/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
index 2307cbb191..4d4aaca7e3 100644
--- a/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
+++ b/tests/manual/network/ssl/client-auth/tst_manual_ssl_client_auth.cpp
@@ -16,6 +16,9 @@
// but the other side presents a certificate signed by a different CA.
constexpr bool TestServerPresentsIncorrectCa = false;
constexpr bool TestClientPresentsIncorrectCa = true;
+// Decides whether or not to put the root CA into the global ssl configuration
+// or into the socket's specific ssl configuration.
+constexpr bool UseGlobalConfiguration = true;
class ServerThread : public QThread
{
@@ -26,8 +29,10 @@ public:
QSslServer server;
QSslConfiguration config = server.sslConfiguration();
- QList<QSslCertificate> certs = QSslCertificate::fromPath(QStringLiteral(":/rootCA.pem"));
- config.setCaCertificates(certs);
+ if (!UseGlobalConfiguration) {
+ QList<QSslCertificate> certs = QSslCertificate::fromPath(QStringLiteral(":/rootCA.pem"));
+ config.setCaCertificates(certs);
+ }
config.setLocalCertificate(QSslCertificate::fromPath(QStringLiteral(":/127.0.0.1.pem"))
.first());
QFile keyFile(QStringLiteral(":/127.0.0.1-key.pem"));
@@ -73,6 +78,12 @@ int main(int argc, char **argv)
if (!QFileInfo(u":/rootCA.pem"_s).exists())
qFatal("rootCA.pem not found. Did you run generate.sh in the certs directory?");
+ if (UseGlobalConfiguration) {
+ QSslConfiguration config = QSslConfiguration::defaultConfiguration();
+ config.setCaCertificates(QSslCertificate::fromPath(u":/rootCA.pem"_s));
+ QSslConfiguration::setDefaultConfiguration(config);
+ }
+
ServerThread serverThread;
serverThread.start();
@@ -88,12 +99,19 @@ int main(int argc, char **argv)
keyFileName = u":/accepted-client-key.pem"_s;
}
config.setLocalCertificate(QSslCertificate::fromPath(certificatePath).first());
- if (TestServerPresentsIncorrectCa) // true: Verify server using incorrect CA: should fail
+ if (!UseGlobalConfiguration && TestServerPresentsIncorrectCa) {
+ // Verify server using incorrect CA: should fail
config.setCaCertificates(QSslCertificate::fromPath(u":/rootCA.pem"_s));
+ } else if (UseGlobalConfiguration && !TestServerPresentsIncorrectCa) {
+ // Verify server using correct CA, we need to explicitly set the
+ // system CAs when the global config is overridden.
+ config.setCaCertificates(QSslConfiguration::systemCaCertificates());
+ }
QFile keyFile(keyFileName);
if (!keyFile.open(QIODevice::ReadOnly))
qFatal("Failed to open key file");
config.setPrivateKey(QSslKey(&keyFile, QSsl::Rsa));
+
socket.setSslConfiguration(config);
QObject::connect(&socket, &QSslSocket::encrypted, []() { qDebug() << "[c] encrypted"; });
--
2.40.1

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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Mon Jun 5 08:59:52 UTC 2023 - Christophe Marin <christophe@krop.fr>
- Add upstream changes (CVE-2023-34410, boo#1211994):
* 0001-Schannel-Reject-certificate-not-signed-by-a-configur.patch
* 0001-Ssl-Copy-the-on-demand-cert-loading-bool-from-defaul.patch
-------------------------------------------------------------------
Wed May 24 07:45:34 UTC 2023 - Christophe Marin <christophe@krop.fr>

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@ -39,6 +39,8 @@ URL: https://www.qt.io
Source: https://download.qt.io/official_releases/qt/%{short_version}/%{real_version}%{tar_suffix}/submodules/%{tar_name}-%{real_version}%{tar_suffix}.tar.xz
Source99: qt6-base-rpmlintrc
# Patches 0-100 are upstream patches #
Patch0: 0001-Schannel-Reject-certificate-not-signed-by-a-configur.patch
Patch1: 0001-Ssl-Copy-the-on-demand-cert-loading-bool-from-defaul.patch
# Patches 100-200 are openSUSE and/or non-upstream(able) patches #
Patch100: 0001-Tell-the-truth-about-private-API.patch
# No need to pollute the library dir with object files, install them in the qt6 subfolder