Epic Games Launcher Protocol Command Injection Remote Code Execution Vulnerability

November 23rd, 2018
ZDI-18-1359 ZDI-CAN-7241

CVE ID

CVE-2018-17707

CVSS Score

8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

Epic Games

Affected Products

Epic Games Launcher

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Visual Studio with tools for Unreal Engine development installed. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handler for the com.epicgames.launcher protocol. A crafted URI with the com.epicgames.launcher protocol can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code in the context of the current user.

Additional Details

Fixed in version 8.2.2


Disclosure Timeline

  • 2018-09-14 - Vulnerability reported to vendor
  • 2018-11-23 - Coordinated public release of advisory

Credit

rgod of 9sg Security Team - rgod@9sgsec.com

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