Adobe Security Bulletin

Security update available  for Adobe Acrobat and Reader | APSB21-37

Bulletin ID

Date Published

Priority

APSB21-37

June 08, 2021

2

Summary

Adobe has released security updates for Adobe Acrobat and Reader for Windows and macOS. These updates address multiple critical vulnerabilities. Successful exploitation could lead to arbitrary code execution in the context of the current user.

 

Affected Versions

Product

Track

Affected Versions

Platform

Acrobat DC 

Continuous 

2021.001.20155 and earlier versions          

Windows and macOS

Acrobat Reader DC

Continuous 

2021.001.20155 and earlier versions          

Windows and macOS

 

 

 

 

Acrobat 2020

Classic 2020           

2020.001.30025 and earlier versions

Windows & macOS

Acrobat Reader 2020

Classic 2020           

2020.001.30025 and earlier versions

Windows & macOS

 

 

 

 

Acrobat 2017

Classic 2017

2017.011.30196  and earlier versions          

Windows & macOS

Acrobat Reader 2017

Classic 2017

2017.011.30196  and earlier versions          

Windows & macOS

Solution

Adobe recommends users update their software installations to the latest versions by following the instructions below.    

The latest product versions are available to end users via one of the following methods:    

  • Users can update their product installations manually by choosing Help > Check for Updates.     

  • The products will update automatically, without requiring user intervention, when updates are detected.      

  • The full Acrobat Reader installer can be downloaded from the Acrobat Reader Download Center.     

For IT administrators (managed environments):     

  • Refer to the specific release note version for links to installers.     

  • Install updates via your preferred methodology, such as AIP-GPO, bootstrapper, SCUP/SCCM (Windows), or on macOS, Apple Remote Desktop and SSH.     

   

Adobe categorizes these updates with the following priority ratings and recommends users update their installation to the newest version:    

Product

Track

Updated Versions

Platform

Priority Rating

Availability

Acrobat DC

Continuous

2021.005.20048       

Windows and macOS

2

Acrobat Reader DC

Continuous

2021.005.20048  

Windows and macOS

2

Release Notes     

 

 

 

 

 

 

Acrobat 2020

Classic 2020           

2020.004.30005 

Windows and macOS     

2

Acrobat Reader 2020

Classic 2020           

2020.004.30005 

Windows and macOS     

2

 

 

 

 

 

 

Acrobat 2017

Classic 2017

2017.011.30197 

Windows and macOS

2

Acrobat Reader 2017

Classic 2017

2017.011.30197  

Windows and macOS

2

Vulnerability Details

Vulnerability Category Vulnerability Impact Severity CVSS base score 
CVSS vector
CVE Number

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-2021-28554

CVE-2021-28551

Use After Free

(CWE-416)

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-2021-28552

CVE-2021-28631

CVE-2021-28632

Acknowledgements

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

  • Mark Vincent Yason (@MarkYason) working with Trend Micro Zero Day Initiative (CVE-2021-28554, CVE-2021-28631, CVE-2021-28632)
  • Anonymous working with Trend Micro Zero Day Initiative (CVE-2021-28552)
  • qiaoli01 (CVE-2021-28551)

Revisions

June 10, 2021: Updated version number of Acrobat DC and Acrobat Reader DC in the Solution table..






 

 


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

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