CVE Vulnerability

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.1 /10

CVSS v3.0 : HIGH

V3 Legend

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

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

Configuration 1

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

Published : 2021-06-06 08:15

Updated : 2021-06-15 06:27

NVD link : CVE-2021-33879

Mitre link : CVE-2021-33879

Products Affected
No products.
CWE
CWE-494

Download of Code Without Integrity Check