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.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:tencent:gameloop:*:*:*:*:*:*:*:*

Information

Published : 2021-06-06 13:15

Updated : 2021-06-15 11:27

NVD link : CVE-2021-33879

Mitre link : CVE-2021-33879

JSON object : View

CWE

CWE-494

Download of Code Without Integrity Check

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Products Affected

tencent

gameloop

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