Advisory Details

December 21st, 2021

Adobe Photoshop Lightroom TIF File Parsing Use-After-Free Information Disclosure Vulnerability

ZDI-21-1581
ZDI-CAN-15242

CVE ID CVE-2021-43753
CVSS SCORE 3.3, AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Photoshop Lightroom
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of of Adobe Photoshop Lightroom. 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 TIF images. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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/lightroom/apsb21-119.html
DISCLOSURE TIMELINE
  • 2021-09-15 - Vulnerability reported to vendor
  • 2021-12-21 - Coordinated public release of advisory
CREDIT Mat Powell of Trend Micro Zero Day Initiative
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