CVE-2020-7949:Valve Dota 2 before version 7.23f contains a vulnerability in schemasystem.dll that allows remote attackers to execute code or cause denial of service.

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Description Preview

A vulnerability exists in the schemasystem.dll component of Valve Dota 2 versions prior to 7.23f. Remote attackers can exploit this vulnerability by creating a malicious gaming server and inviting victims to join. When a victim connects to the server, a crafted map is mishandled during a GetValue call, which can lead to arbitrary code execution or denial of service on the victim's system. This vulnerability allows attackers to compromise affected systems without requiring significant user interaction beyond accepting a game invitation.

Overview

CVE-2020-7949 affects Valve Dota 2, a popular multiplayer online battle arena (MOBA) game. The vulnerability exists in the schemasystem.dll component which improperly handles crafted maps during GetValue calls. An attacker can exploit this by creating a malicious server with a specially crafted map and inviting victims to join. When the victim connects to the server, the vulnerability can be triggered, potentially allowing arbitrary code execution with the privileges of the user running the game or causing the game to crash. This vulnerability is particularly concerning because it requires minimal user interaction and could affect a large number of players.

Remediation

Users should update to Valve Dota 2 version 7.23f or later, which contains a fix for this vulnerability. Additionally, players should:

  • Be cautious about accepting game invitations from unknown or untrusted sources
  • Keep the Dota 2 client updated to the latest version
  • Consider running the game with minimal privileges where possible
  • Use updated antivirus and security software that may detect exploitation attempts

References

  1. GitHub repository with vulnerability details: https://github.com/bi7s/CVE/tree/master/CVE-2020-7949
  2. Valve Dota 2 update history (check for version 7.23f or later)
  3. MITRE CVE entry: CVE-2020-7949

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Manufacturing
    Manufacturing
  2. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  3. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  4. Accommodation & Food Services
    Accommodation & Food Services
  5. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  6. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  7. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  8. Construction
    Construction
  9. Educational Services
    Educational Services
  10. Finance and Insurance
    Finance and Insurance
  11. Health Care & Social Assistance
    Health Care & Social Assistance
  12. Information
    Information
  13. Management of Companies & Enterprises
    Management of Companies & Enterprises
  14. Mining
    Mining
  15. Other Services (except Public Administration)
    Other Services (except Public Administration)
  16. Public Administration
    Public Administration
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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