Check Point Advisories

Adobe Acrobat Reader Buffer Overflow (CVE-2021-21017)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-0066
Date Published:	9 Feb 2021
Severity:	High
Last Updated:	Sunday 26 November, 2023
Source:	Adobe APSB21-09
Industry Reference:	CVE-2021-21017
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Adobe Acrobat Classic 17.0 up to 17.011.30188 Adobe Acrobat Classic 20.0 up to 20.001.30018 Adobe Acrobat DC Continuous 20.013.20074 and prior Adobe Acrobat Reader Classic 17.0 up to 17.011.30188 Adobe Acrobat Reader Classic 20.0 up to 20.001.300183 Adobe Acrobat Reader DC Continuous 20.013.20074 and prior
Vulnerability Description	A buffer overflow vulnerability exists in Adobe Acrobat. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system or cause application crashes.
Update/Patch Avaliable	Apply patches from: APSB21-09

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 Reader Buffer Overflow (CVE-2021-21017) 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 Reader Buffer Overflow (CVE-2021-21017)