Advisory Details

September 16th, 2021

Adobe InDesign TIF File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability

ZDI-21-1097
ZDI-CAN-14379

CVE ID CVE-2021-39821
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 InDesign
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe InDesign. 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 files. The issue results from the lack of proper validation of user-supplied data, which can result in a read 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/indesign/apsb21-73.html
DISCLOSURE TIMELINE
  • 2021-07-07 - Vulnerability reported to vendor
  • 2021-09-16 - Coordinated public release of advisory
CREDIT Francis Provencher {PRL}
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