CVE-2021-33879

CVSS V2 Medium 6.8 CVSS V3 High 8.1
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.
Overview
  • CVE ID
  • CVE-2021-33879
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-06-06T20:15:07
  • Last Modified Date
  • 2021-06-15T18:27:47
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:tencent:gameloop:*:*:*:*:*:*:*:* 1 OR 4.1.21.90
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.2
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/mmiszczyk/cve-2021-33879 Exploit Third Party Advisory
https://www.gameloop.com Vendor Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 07:11:25 Added to TrackCVE
2022-12-05 03:37:18 2021-06-06T20:15Z 2021-06-06T20:15:07 CVE Published Date updated
2022-12-05 03:37:18 2021-06-15T18:27:47 CVE Modified Date updated
2022-12-05 03:37:18 Analyzed Vulnerability Status updated