Check Point Advisories

PDF Malicious JavaScript Obfuscations (CVE-2021-21017; CVE-2021-28550)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1759
Date Published:	25 Jun 2023
Severity:	High
Last Updated:	Sunday 03 December, 2023
Source:
Industry Reference:	CVE-2021-21017 CVE-2021-28550
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Known exploits could potentially bypass security products by using PDF macros obfuscation techniques. Since the exploits are obfuscated they may not be detected by IDS and IPS systems, thus allowing attackers to successfully attack target machines.

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 PDF Malicious JavaScript Obfuscations 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: PDF Malicious JavaScript Obfuscations