Advisory Details

March 24th, 2022

(0Day) Epic Games Launcher Link Following Denial-of-Service Vulnerability

ZDI-22-537
ZDI-CAN-14604

CVE ID
CVSS SCORE 6.1, AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
AFFECTED VENDORS Epic Games
AFFECTED PRODUCTS Epic Games Launcher
VULNERABILITY 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.

ADDITIONAL DETAILS

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.


DISCLOSURE TIMELINE
  • 2021-08-11 - Vulnerability reported to vendor
  • 2022-03-24 - Coordinated public release of advisory
  • 2022-03-29 - Advisory Updated
CREDIT Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative
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