CVE-2020-7949 : Exploit Details and Defense Strategies

Valve Dota 2 before version 7.23f is vulnerable to a critical security issue that could allow remote attackers to execute arbitrary code or cause denial of service by exploiting a mishandling of crafted maps during a GetValue call.

Understanding CVE-2020-7949

This CVE entry highlights a vulnerability in schemasystem.dll within Valve Dota 2.

What is CVE-2020-7949?

The vulnerability in schemasystem.dll in Valve Dota 2 before version 7.23f enables attackers to execute code or disrupt services by manipulating a specially crafted map during a GetValue call.

The Impact of CVE-2020-7949

The security flaw in Valve Dota 2 could lead to severe consequences, including unauthorized code execution and denial of service attacks.

Technical Details of CVE-2020-7949

Valve Dota 2 Vulnerability

Vulnerability Description

The flaw in schemasystem.dll allows remote attackers to exploit a crafted map during a GetValue call, potentially leading to code execution or denial of service.

Affected Systems and Versions

Product: Valve Dota 2
Versions: Before 7.23f

Exploitation Mechanism

Attackers can create a gaming server, invite victims, and manipulate crafted maps during GetValue calls to trigger code execution or service disruption.

Mitigation and Prevention

Protecting Against CVE-2020-7949

Immediate Steps to Take

Update Valve Dota 2 to version 7.23f or later to mitigate the vulnerability.
Avoid joining gaming servers from untrusted sources.

Long-Term Security Practices

Regularly update gaming software to the latest versions.
Educate users on safe gaming practices and potential risks.

Patching and Updates

Valve has likely released patches addressing this vulnerability. Ensure timely installation of updates to stay protected.