Adobe Security Bulletin

Security Update Available for Adobe InDesign | APSB21-73

Bulletin ID

Date Published

Priority

APSB21-73

September 14, 2021 

3

Summary

Adobe has released a security update for Adobe InDesign.  This update addresses multiple critical vulnerabilities. Successful exploitation could lead to arbitrary code execution in the context of the current user.  

Affected versions

Product

Affected version

Platform

Adobe InDesign

16.3.2 and earlier versions

macOS 

Adobe InDesign

16.3 and earlier versions   

Windows

Solution

Adobe categorizes these updates with the following priority rating and recommends users update their software installations via the Creative Cloud desktop app updater, or by navigating to the InDesign Help menu and clicking "Updates." For more information, please reference this help page.

Product

Updated version

Platform

Priority rating

Availability

Adobe InDesign

16.4

Windows and macOS

3

For managed environments, IT administrators can use the Creative Cloud Packager to create deployment packages. Refer to this help page for more information.

Vulnerability Details

Vulnerability Category

Vulnerability Impact

Severity

CVSS base score 

CVE Number

Access of Memory Location After End of Buffer

(CWE-788)

Arbitrary code execution 

Critical 

8.8

CVSS3.1:/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

 CVE-2021-39820

Out-of-bounds Read

(CWE-125)

Arbitrary code execution 

Critical 

7.8

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVE-2021-39821

CVE-2021-39822

Acknowledgments

Adobe would like to thank the following researchers for reporting these issues and for working with Adobe to help protect our customers:   

  • Francis Provencher{PRL} working with Trend Micro Zero Day Initiative (CVE-2021-39821, CVE-2021-39822)
  • CQY of Topsec Alpha Team (yjdfy) (CVE-2021-39820)

For more information, visit https://helpx.adobe.com/security.html , or email PSIRT@adobe.com

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