Check Point Advisories

Adobe Acrobat and Reader Out-of-bounds Write (APSB21-104: CVE-2021-40731)

Check Point Reference: CPAI-2021-0754
Date Published: 12 Oct 2021
Severity: High
Last Updated: Tuesday 12 October, 2021
Source: Adobe APSB21-104
Industry Reference:CVE-2021-40731
Protection Provided by:

Security Gateway
R81, R80, R77, R75

Who is Vulnerable? Adobe Acrobat DC Continuous for Windows 2017.011.30161
Adobe Acrobat DC Continuous for Macintosh 2017.011.30161
Adobe Acrobat Reader DC Continuous for Windows 2017.011.30161
Adobe Acrobat Reader DC Continuous for Macintosh 2017.011.30161
Adobe Acrobat DC Classic for Windows 2015.006.30512
Adobe Acrobat DC Classic for Macintosh 2015.006.30512
Adobe Acrobat Reader DC Classic for Windows 2015.006.30512
Adobe Acrobat Reader DC Classic for Macintosh 2015.006.30512
Vulnerability Description An out of bounds write vulnerability exists in Adobe Acrobat and Reader. Successful exploitation of this vulnerability could allow a remote attacker to obtain sensitive information..
Update/Patch AvaliableApply patches from: APSB21-104

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Adobe Acrobat and Reader Out-of-bounds Write (APSB21-104: CVE-2021-40731) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Adobe Reader Violation.
Attack Information:  Adobe Acrobat and Reader Out-of-bounds Write (APSB21-104: CVE-2021-40731)

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