Headline
CVE-2021-39820: Adobe Security Bulletin
Adobe InDesign versions 16.3 (and earlier), and 16.3.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious TIFF file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.
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
16.3.2 and earlier versions
16.3 and earlier versions
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
Release Note
Adobe InDesign
15.1.4
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
CVSS vector
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
Access of Memory Location After End of Buffer
(CWE-788)
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-2021-40727
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, CVE-2021-40727)
Revision
July 14, 2021: Replaced CVE-2021-21043 with CVE-2021-36004
July 28, 2021: Updated Affected Version and Solution Table.
September 29, 2021: Added N-1 version details under the solution section.
September 30, 2021: Added details for CVE-2021-40727.
October 4, 2021: Removed link to Release Notes for version 15.1.4.