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Download of Code Without Integrity Check


Severity High
Score 8.1/10


Tencent GameLoop before 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.

  • HIGH
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-494 - Download of Code Without Integrity Check

The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.


Advisory Timeline

  • Published