Advisory Details

December 21st, 2021

Adobe Photoshop JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-21-1560
ZDI-CAN-15147

CVE ID CVE-2021-43018
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 parsing of JPG2000 images. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated structure. 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/apsb21-113.html
DISCLOSURE TIMELINE
  • 2021-09-10 - Vulnerability reported to vendor
  • 2021-12-21 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
BACK TO ADVISORIES