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             AUSCERT External Security Bulletin Redistribution

          APSB21-73 Security update available for Adobe InDesign
                             15 September 2021


        AusCERT Security Bulletin Summary

Product:           Adobe InDesign
Publisher:         Adobe
Operating System:  Windows
                   Mac OS
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-39822 CVE-2021-39821 CVE-2021-39820

Original Bulletin: 

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Security Update Available for Adobe InDesign | APSB21-73

Bulletin ID                  Date Published                 Priority

APSB21-73               September 14, 2021                    3


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


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

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   Vulnerability          CVSS
    Category         Impact     Severity base     CVSS vector      CVE Number

Access of Memory
Location After    Arbitrary                    CVSS3.1:/AV:N/
End of Buffer     code          Critical 8.8   AC:L/PR:N/UI:R/   CVE-2021-39820
                  execution                    S:U/C:H/I:H/A:H
( CWE-788 )

Out-of-bounds     Arbitrary                    CVSS:3.1/AV:L/    CVE-2021-39821
Read              code          Critical 7.8   AC:L/PR:N/UI:R/
                  execution                    S:U/C:H/I:H/A:H   CVE-2021-39822
( CWE-125 )


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

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

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

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