Advisory Details

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Epic Games Launcher. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the Epic Games installer. By creating a symbolic link, an attacker can abuse the installer to overwrite a file. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.

08/11/21 – ZDI reported the vulnerabilities to vendor  
02/22/22 – ZDI requested an update  
03/16/22 – ZDI notified the vendor of the intention to publish the cases as 0-day advisories on 03/24/22  

-- Mitigation:
Given the nature of the vulnerability the only salient mitigation strategy is to restrict interaction with the application.

• 2021-08-11 - Vulnerability reported to vendor
• 2022-03-24 - Coordinated public release of advisory
• 2022-03-29 - Advisory Updated