CVE-2018-3974 : Exploit Details and Defense Strategies

A security vulnerability in GOG Galaxy's install directory allows attackers to gain elevated privileges on the local system.

Understanding CVE-2018-3974

GOG Galaxy 1.2.45.61 (Windows 64-bit Installer) is affected by a critical local privilege elevation vulnerability.

What is CVE-2018-3974?

The vulnerability stems from insecure file system permissions in GOG Galaxy's install directory.
Attackers can exploit this flaw to overwrite a specific executable, granting them system privileges.

The Impact of CVE-2018-3974

CVSS Score: 9.3 (Critical)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Scope: Changed
No privileges required for exploitation

Technical Details of CVE-2018-3974

GOG Galaxy's vulnerability is detailed below:

Vulnerability Description

Attackers can exploit file system permissions to overwrite a critical executable, leading to system privilege escalation.

Affected Systems and Versions

Product: GOG Galaxy
Vendor: GOG.COM
Version: Gog Galaxy 1.2.45.61 (Windows 64-bit Installer)

Exploitation Mechanism

By overwriting a specific executable in the install directory, attackers can execute arbitrary code with system privileges.

Mitigation and Prevention

Steps to address and prevent CVE-2018-3974:

Immediate Steps to Take

Apply security patches provided by GOG.COM promptly.
Restrict access to the install directory to authorized users only.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly update GOG Galaxy to the latest version to mitigate known vulnerabilities.
Implement least privilege access controls to limit potential damage from privilege escalation attacks.

Patching and Updates

Stay informed about security updates from GOG.COM and apply them as soon as they are available.