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CVE-2021-33879 Detail

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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/mmiszczyk/cve-2021-33879 Exploit  Third Party Advisory 
https://www.gameloop.com Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-494 Download of Code Without Integrity Check cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-33879
NVD Published Date:
06/06/2021
NVD Last Modified:
06/15/2021
Source:
MITRE