Adobe Photoshop JSX File ExtendScript Folder.rename Insufficient UI Warning Remote Code Execution Vulnerability

August 27th, 2019
ZDI-19-779 ZDI-CAN-8521

CVE ID

CVE-2019-7989

CVSS Score

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

Affected Vendors

Adobe

Affected Products

Photoshop

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Photoshop. 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 handling of the Folder.rename method when processing JSX files. When opening a JSX file, the user interface fails to warn the user of unsafe actions. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/photoshop/apsb19-44.html

Disclosure Timeline

  • 2019-05-09 - Vulnerability reported to vendor
  • 2019-08-27 - Coordinated public release of advisory

Credit

Steven Seeley (mr_me) of Source Incite

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