Advisory Details

August 27th, 2019

Adobe Photoshop JSX File ExtendScript app.system Insufficient UI Warning Remote Code Execution Vulnerability

ZDI-19-768
ZDI-CAN-8496

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 app.system 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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