CVEvulnerability
CVE-2021-33879
8.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-06
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-494
Description
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.
Affected configurations
• tencent gameloop (< 4.1.21.90)
Related
Weakness · CWE (1)
- CWE-494 Download of Code Without Integrity Check weakness
References
- https://github.com/mmiszczyk/cve-2021-33879 Exploit, Third Party Advisory
- https://www.gameloop.com Vendor Advisory
- https://github.com/mmiszczyk/cve-2021-33879 Exploit, Third Party Advisory
- https://www.gameloop.com Vendor Advisory