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48f4a9b7c9
https://www.qt.io/blog/security-advisory-qstringconverter-0 MFH: 2024Q2 Security: f5fa174d-19de-11ef-83d8-4ccc6adda413
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
Address CVE-2024-36048.
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https://www.qt.io/blog/security-advisory-qstringconverter-0
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--- src/oauth/qabstractoauth.cpp.orig 2024-01-04 19:21:59 UTC
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+++ src/oauth/qabstractoauth.cpp
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@@ -37,7 +37,6 @@
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#include <QtCore/qurl.h>
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#include <QtCore/qpair.h>
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#include <QtCore/qstring.h>
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-#include <QtCore/qdatetime.h>
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#include <QtCore/qurlquery.h>
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#include <QtCore/qjsondocument.h>
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#include <QtCore/qmessageauthenticationcode.h>
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@@ -46,6 +45,9 @@
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#include <QtNetwork/qnetworkaccessmanager.h>
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#include <QtNetwork/qnetworkreply.h>
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+#include <QtCore/qrandom.h>
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+#include <QtCore/private/qlocking_p.h>
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+
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#include <random>
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Q_DECLARE_METATYPE(QAbstractOAuth::Error)
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@@ -290,15 +292,19 @@ void QAbstractOAuthPrivate::setStatus(QAbstractOAuth::
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}
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}
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+static QBasicMutex prngMutex;
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+Q_GLOBAL_STATIC_WITH_ARGS(std::mt19937, prng, (*QRandomGenerator::system()))
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+
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QByteArray QAbstractOAuthPrivate::generateRandomString(quint8 length)
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{
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- const char characters[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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- static std::mt19937 randomEngine(QDateTime::currentDateTime().toMSecsSinceEpoch());
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+ constexpr char characters[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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std::uniform_int_distribution<int> distribution(0, sizeof(characters) - 2);
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QByteArray data;
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data.reserve(length);
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+ auto lock = qt_unique_lock(prngMutex);
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for (quint8 i = 0; i < length; ++i)
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- data.append(characters[distribution(randomEngine)]);
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+ data.append(characters[distribution(*prng)]);
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+ lock.unlock();
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return data;
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}
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@@ -614,6 +620,7 @@ void QAbstractOAuth::resourceOwnerAuthorization(const
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}
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/*!
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+ \threadsafe
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Generates a random string which could be used as state or nonce.
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The parameter \a length determines the size of the generated
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string.
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