CVE-2021-33879

https://notcve.org/view.php?id=CVE-2021-33879

Tencent GameLoop before 4.1.21.90 downloaded updates over an insecure HTTP connection. A malicious attacker in an MITM position could spoof the contents of an XML document describing an update package, replacing a download URL with one pointing to an arbitrary Windows executable. Because the only integrity check would be a comparison of the downloaded file's MD5 checksum to the one contained within the XML document, the downloaded executable would then be executed on the victim's machine. Tencent GameLoop versiones anteriores a 4.1.21.90, descargaba actualizaciones mediante una conexión HTTP no segura. Un atacante malicioso en posición de MITM podría falsificar el contenido de un documento XML describiendo un paquete de actualización, reemplazando una URL de descarga por otra apuntando a un ejecutable arbitrario de Windows. • https://github.com/mmiszczyk/cve-2021-33879 https://www.gameloop.com • CWE-494: Download of Code Without Integrity Check •