Check Point Advisories

Adobe Acrobat Use After Free (CVE-2021-28550)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-0278
Date Published:	11 May 2021
Severity:	High
Last Updated:	Thursday 30 November, 2023
Source:
Industry Reference:	CVE-2021-28550
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Adobe Acrobat DC Continuous 15.008.20082 up to 21.001.20150 Adobe Acrobat Reader DC Continuous 15.008.20082 up to 21.001.20150 Adobe Acrobat Classic 17.011.30059 up to 17.011.30194 Adobe Acrobat Classic 20.001.3005 up to 20.001.30020 Adobe Acrobat Reader Classic 17.011.30059 up to 17.011.30194 Adobe Acrobat Reader Classic 20.001.3005 up to 20.001.30020 Adobe Acrobat DC Continuous 15.008.20082 up to 21.001.20150 Adobe Acrobat Reader DC Continuous 15.008.20082 up to 21.001.20150
Vulnerability Description	A use-after-free vulnerability exists in Adobe Acrobat. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system.

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

In the IPS tab, click Protections and find the Adobe Acrobat Use After Free (CVE-2021-28550) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Adobe Reader Violation.
Attack Information: Adobe Acrobat Use After Free (CVE-2021-28550)